CVE-2023-52435 (GCVE-0-2023-52435)
Vulnerability from cvelistv5 – Published: 2024-02-20 18:27 – Updated: 2026-05-11 19:27
VLAI
EPSS
VEX
Title
net: prevent mss overflow in skb_segment()
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: prevent mss overflow in skb_segment()
Once again syzbot is able to crash the kernel in skb_segment() [1]
GSO_BY_FRAGS is a forbidden value, but unfortunately the following
computation in skb_segment() can reach it quite easily :
mss = mss * partial_segs;
65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to
a bad final result.
Make sure to limit segmentation so that the new mss value is smaller
than GSO_BY_FRAGS.
[1]
general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]
CPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551
Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00
RSP: 0018:ffffc900043473d0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597
RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070
RBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff
R10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0
R13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046
FS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
udp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109
ipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120
skb_mac_gso_segment+0x290/0x610 net/core/gso.c:53
__skb_gso_segment+0x339/0x710 net/core/gso.c:124
skb_gso_segment include/net/gso.h:83 [inline]
validate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626
__dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338
dev_queue_xmit include/linux/netdevice.h:3134 [inline]
packet_xmit+0x257/0x380 net/packet/af_packet.c:276
packet_snd net/packet/af_packet.c:3087 [inline]
packet_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
__sys_sendto+0x255/0x340 net/socket.c:2190
__do_sys_sendto net/socket.c:2202 [inline]
__se_sys_sendto net/socket.c:2198 [inline]
__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f8692032aa9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9
RDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480
R13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551
Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00
RSP: 0018:ffffc900043473d0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597
RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070
RBP: ffffc90004347578 R0
---truncated---
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-22 16:45 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
3953c46c3ac7eef31a9935427371c6f54a22f1ba , < 0d3ffbbf8631d6db0552f46250015648991c856f
(git)
Affected: 3953c46c3ac7eef31a9935427371c6f54a22f1ba , < cd1022eaf87be8e6151435bd4df4c242c347e083 (git) Affected: 3953c46c3ac7eef31a9935427371c6f54a22f1ba , < 8f8f185643747fbb448de6aab0efa51c679909a3 (git) Affected: 3953c46c3ac7eef31a9935427371c6f54a22f1ba , < 6c53e8547687d9c767c139cd4b50af566f58c29a (git) Affected: 3953c46c3ac7eef31a9935427371c6f54a22f1ba , < 989b0ff35fe5fc9652ee5bafbe8483db6f27b137 (git) Affected: 3953c46c3ac7eef31a9935427371c6f54a22f1ba , < 95b3904a261a9f810205da560e802cc326f50d77 (git) Affected: 3953c46c3ac7eef31a9935427371c6f54a22f1ba , < 23d05d563b7e7b0314e65c8e882bc27eac2da8e7 (git) |
guessed | |
| Linux | Linux |
Affected:
4.8
Unaffected: 0 , < 4.8 (semver) Unaffected: 4.19.321 , ≤ 4.19.* (semver) Unaffected: 5.4.269 , ≤ 5.4.* (semver) Unaffected: 5.10.210 , ≤ 5.10.* (semver) Unaffected: 5.15.149 , ≤ 5.15.* (semver) Unaffected: 6.1.79 , ≤ 6.1.* (semver) Unaffected: 6.6.11 , ≤ 6.6.* (semver) Unaffected: 6.7 , ≤ * (original_commit_for_fix) |
guessed |
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: prevent mss overflow in skb_segment()\n\nOnce again syzbot is able to crash the kernel in skb_segment() [1]\n\nGSO_BY_FRAGS is a forbidden value, but unfortunately the following\ncomputation in skb_segment() can reach it quite easily :\n\n\tmss = mss * partial_segs;\n\n65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to\na bad final result.\n\nMake sure to limit segmentation so that the new mss value is smaller\nthan GSO_BY_FRAGS.\n\n[1]\n\ngeneral protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]\nCPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\nRBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff\nR10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0\nR13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046\nFS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\u003cTASK\u003e\nudp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109\nipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120\nskb_mac_gso_segment+0x290/0x610 net/core/gso.c:53\n__skb_gso_segment+0x339/0x710 net/core/gso.c:124\nskb_gso_segment include/net/gso.h:83 [inline]\nvalidate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626\n__dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338\ndev_queue_xmit include/linux/netdevice.h:3134 [inline]\npacket_xmit+0x257/0x380 net/packet/af_packet.c:276\npacket_snd net/packet/af_packet.c:3087 [inline]\npacket_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119\nsock_sendmsg_nosec net/socket.c:730 [inline]\n__sock_sendmsg+0xd5/0x180 net/socket.c:745\n__sys_sendto+0x255/0x340 net/socket.c:2190\n__do_sys_sendto net/socket.c:2202 [inline]\n__se_sys_sendto net/socket.c:2198 [inline]\n__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x63/0x6b\nRIP: 0033:0x7f8692032aa9\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9\nRDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003\nRBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480\nR13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003\n\u003c/TASK\u003e\nModules linked in:\n---[ end trace 0000000000000000 ]---\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\nRBP: ffffc90004347578 R0\n---truncated---"
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
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"title": "net: prevent mss overflow in skb_segment()",
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"dateReserved": "2024-02-20T12:30:33.290Z",
"dateUpdated": "2026-05-11T19:27:17.851Z",
"state": "PUBLISHED"
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"cve": "CVE-2023-52435",
"date": "2026-09-16",
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"percentile": "0.14132"
},
"fkie_nvd": {
"configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"5.4.269\", \"matchCriteriaId\": \"48E561A5-2F59-4E74-BFAB-39B8D844FD15\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5.0\", \"versionEndExcluding\": \"5.10.210\", \"matchCriteriaId\": \"B39742A2-A0C1-490C-95CC-FB78D6D70698\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11.0\", \"versionEndExcluding\": \"5.15.149\", \"matchCriteriaId\": \"E6FB1C44-BEEE-4D31-AD44-E15806EA6249\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16.0\", \"versionEndExcluding\": \"6.1.79\", \"matchCriteriaId\": \"3B0A907E-1010-4294-AEFE-0EB5684AF52C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2.0\", \"versionEndExcluding\": \"6.6.11\", \"matchCriteriaId\": \"B476EA8E-7141-4ABB-8EF7-F7B6806D4892\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"3A0038DE-E183-4958-A6E3-CE3821FEAFBF\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"E31AD4FC-436C-44AB-BCAB-3A0B37F69EE0\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"C56C6E04-4F04-44A3-8DB8-93899903CFCF\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"5C78EDA4-8BE6-42FC-9512-49032D525A55\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.7:rc5:*:*:*:*:*:*\", \"matchCriteriaId\": \"32F2E5CA-13C6-4601-B530-D465CBF73D1C\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: prevent mss overflow in skb_segment()\\n\\nOnce again syzbot is able to crash the kernel in skb_segment() [1]\\n\\nGSO_BY_FRAGS is a forbidden value, but unfortunately the following\\ncomputation in skb_segment() can reach it quite easily :\\n\\n\\tmss = mss * partial_segs;\\n\\n65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to\\na bad final result.\\n\\nMake sure to limit segmentation so that the new mss value is smaller\\nthan GSO_BY_FRAGS.\\n\\n[1]\\n\\ngeneral protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN\\nKASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]\\nCPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023\\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\\nRBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff\\nR10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0\\nR13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046\\nFS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n\u003cTASK\u003e\\nudp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109\\nipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120\\nskb_mac_gso_segment+0x290/0x610 net/core/gso.c:53\\n__skb_gso_segment+0x339/0x710 net/core/gso.c:124\\nskb_gso_segment include/net/gso.h:83 [inline]\\nvalidate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626\\n__dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338\\ndev_queue_xmit include/linux/netdevice.h:3134 [inline]\\npacket_xmit+0x257/0x380 net/packet/af_packet.c:276\\npacket_snd net/packet/af_packet.c:3087 [inline]\\npacket_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119\\nsock_sendmsg_nosec net/socket.c:730 [inline]\\n__sock_sendmsg+0xd5/0x180 net/socket.c:745\\n__sys_sendto+0x255/0x340 net/socket.c:2190\\n__do_sys_sendto net/socket.c:2202 [inline]\\n__se_sys_sendto net/socket.c:2198 [inline]\\n__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198\\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\\ndo_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\\nentry_SYSCALL_64_after_hwframe+0x63/0x6b\\nRIP: 0033:0x7f8692032aa9\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9\\nRDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003\\nRBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014\\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480\\nR13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003\\n\u003c/TASK\u003e\\nModules linked in:\\n---[ end trace 0000000000000000 ]---\\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\\nRBP: ffffc90004347578 R0\\n---truncated---\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: previene el desbordamiento de mss en skb_segment() Una vez m\\u00e1s, syzbot puede bloquear el kernel en skb_segment() [1] GSO_BY_FRAGS es un valor prohibido, pero desafortunadamente el siguiente c\\u00e1lculo en skb_segment () puede alcanzarlo con bastante facilidad: mss = mss * part_segs; 65535 = 3 * 5 * 17 * 257, por lo que muchos valores iniciales de mss pueden llevar a un mal resultado final. Aseg\\u00farese de limitar la segmentaci\\u00f3n para que el nuevo valor de mss sea menor que GSO_BY_FRAGS. [1] falla de protecci\\u00f3n general, probablemente para direcci\\u00f3n no can\\u00f3nica 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref en rango [0x0000000000000070-0x0000000000000077] CPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u0026lt;0f\u0026gt; b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff R10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0 R13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046 FS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109 ipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120 skb_mac_gso_segment+0x290/0x610 net/core/gso.c:53 __skb_gso_segment+0x339/0x710 net/core/gso.c:124 skb_gso_segment include/net/gso.h:83 [inline] validate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626 __dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338 dev_queue_xmit include/linux/netdevice.h:3134 [inline] packet_xmit+0x257/0x380 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x255/0x340 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f8692032aa9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9 RDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480 R13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u0026lt;0f\u0026gt; b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R0 ---truncated--- \"}]",
"id": "CVE-2023-52435",
"lastModified": "2024-11-21T08:39:45.323",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
"published": "2024-02-20T20:15:08.063",
"references": "[{\"url\": \"https://git.kernel.org/stable/c/0d3ffbbf8631d6db0552f46250015648991c856f\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-119\"}]}]"
},
"microsoft_vex": {
"current_release_date": "2026-02-18T01:10:01.000Z",
"cve": "CVE-2023-52435",
"id": "msrc_CVE-2023-52435",
"initial_release_date": "2024-02-02T08:00:00.000Z",
"product_status:fixed": "2",
"product_status:known_affected": "2",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "net: prevent mss overflow in skb_segment()",
"url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2023-52435.json",
"version": "2"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2023-52435\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-20T20:15:08.063\",\"lastModified\":\"2026-06-17T06:42:41.263\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: prevent mss overflow in skb_segment()\\n\\nOnce again syzbot is able to crash the kernel in skb_segment() [1]\\n\\nGSO_BY_FRAGS is a forbidden value, but unfortunately the following\\ncomputation in skb_segment() can reach it quite easily :\\n\\n\\tmss = mss * partial_segs;\\n\\n65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to\\na bad final result.\\n\\nMake sure to limit segmentation so that the new mss value is smaller\\nthan GSO_BY_FRAGS.\\n\\n[1]\\n\\ngeneral protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN\\nKASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]\\nCPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023\\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\\nRBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff\\nR10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0\\nR13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046\\nFS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n\u003cTASK\u003e\\nudp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109\\nipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120\\nskb_mac_gso_segment+0x290/0x610 net/core/gso.c:53\\n__skb_gso_segment+0x339/0x710 net/core/gso.c:124\\nskb_gso_segment include/net/gso.h:83 [inline]\\nvalidate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626\\n__dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338\\ndev_queue_xmit include/linux/netdevice.h:3134 [inline]\\npacket_xmit+0x257/0x380 net/packet/af_packet.c:276\\npacket_snd net/packet/af_packet.c:3087 [inline]\\npacket_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119\\nsock_sendmsg_nosec net/socket.c:730 [inline]\\n__sock_sendmsg+0xd5/0x180 net/socket.c:745\\n__sys_sendto+0x255/0x340 net/socket.c:2190\\n__do_sys_sendto net/socket.c:2202 [inline]\\n__se_sys_sendto net/socket.c:2198 [inline]\\n__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198\\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\\ndo_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\\nentry_SYSCALL_64_after_hwframe+0x63/0x6b\\nRIP: 0033:0x7f8692032aa9\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9\\nRDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003\\nRBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014\\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480\\nR13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003\\n\u003c/TASK\u003e\\nModules linked in:\\n---[ end trace 0000000000000000 ]---\\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\\nRBP: ffffc90004347578 R0\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: previene el desbordamiento de mss en skb_segment() Una vez m\u00e1s, syzbot puede bloquear el kernel en skb_segment() [1] GSO_BY_FRAGS es un valor prohibido, pero desafortunadamente el siguiente c\u00e1lculo en skb_segment () puede alcanzarlo con bastante facilidad: mss = mss * part_segs; 65535 = 3 * 5 * 17 * 257, por lo que muchos valores iniciales de mss pueden llevar a un mal resultado final. Aseg\u00farese de limitar la segmentaci\u00f3n para que el nuevo valor de mss sea menor que GSO_BY_FRAGS. [1] falla de protecci\u00f3n general, probablemente para direcci\u00f3n no can\u00f3nica 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref en rango [0x0000000000000070-0x0000000000000077] CPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u0026lt;0f\u0026gt; b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff R10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0 R13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046 FS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109 ipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120 skb_mac_gso_segment+0x290/0x610 net/core/gso.c:53 __skb_gso_segment+0x339/0x710 net/core/gso.c:124 skb_gso_segment include/net/gso.h:83 [inline] validate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626 __dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338 dev_queue_xmit include/linux/netdevice.h:3134 [inline] packet_xmit+0x257/0x380 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x255/0x340 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f8692032aa9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9 RDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480 R13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u0026lt;0f\u0026gt; b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R0 ---truncated--- 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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2025-11-21T14:46:15+00:00",
"cve": "CVE-2023-52435",
"id": "CVE-2023-52435",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:known_affected": "76",
"product_status:known_not_affected": "122",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: net: prevent mss overflow in skb_segment()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52435.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-02T01:49:49Z",
"cve": "CVE-2023-52435",
"id": "CVE-2023-52435",
"initial_release_date": "2024-02-22T03:06:12Z",
"product_status:known_affected": "511",
"product_status:known_not_affected": "82",
"product_status:recommended": "721",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-52435",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52435.json",
"version": "78"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T22:55:41.660Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52435\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-02-22T16:45:46.929589Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-05T15:20:40.645Z\"}}], \"cna\": {\"title\": \"net: prevent mss overflow in skb_segment()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3953c46c3ac7eef31a9935427371c6f54a22f1ba\", \"lessThan\": \"0d3ffbbf8631d6db0552f46250015648991c856f\", \"versionType\": \"git\"}, {\"status\": \"affected\", 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\"git\"}], \"programFiles\": [\"net/core/skbuff.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.8\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.321\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.269\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.210\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.79\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/core/skbuff.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0d3ffbbf8631d6db0552f46250015648991c856f\"}, {\"url\": \"https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083\"}, {\"url\": \"https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3\"}, {\"url\": \"https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29a\"}, {\"url\": \"https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137\"}, {\"url\": \"https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77\"}, {\"url\": \"https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: prevent mss overflow in skb_segment()\\n\\nOnce again syzbot is able to crash the kernel in skb_segment() [1]\\n\\nGSO_BY_FRAGS is a forbidden value, but unfortunately the following\\ncomputation in skb_segment() can reach it quite easily :\\n\\n\\tmss = mss * partial_segs;\\n\\n65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to\\na bad final result.\\n\\nMake sure to limit segmentation so that the new mss value is smaller\\nthan GSO_BY_FRAGS.\\n\\n[1]\\n\\ngeneral protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN\\nKASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]\\nCPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023\\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\\nRBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff\\nR10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0\\nR13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046\\nFS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n\u003cTASK\u003e\\nudp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109\\nipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120\\nskb_mac_gso_segment+0x290/0x610 net/core/gso.c:53\\n__skb_gso_segment+0x339/0x710 net/core/gso.c:124\\nskb_gso_segment include/net/gso.h:83 [inline]\\nvalidate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626\\n__dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338\\ndev_queue_xmit include/linux/netdevice.h:3134 [inline]\\npacket_xmit+0x257/0x380 net/packet/af_packet.c:276\\npacket_snd net/packet/af_packet.c:3087 [inline]\\npacket_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119\\nsock_sendmsg_nosec net/socket.c:730 [inline]\\n__sock_sendmsg+0xd5/0x180 net/socket.c:745\\n__sys_sendto+0x255/0x340 net/socket.c:2190\\n__do_sys_sendto net/socket.c:2202 [inline]\\n__se_sys_sendto net/socket.c:2198 [inline]\\n__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198\\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\\ndo_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\\nentry_SYSCALL_64_after_hwframe+0x63/0x6b\\nRIP: 0033:0x7f8692032aa9\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9\\nRDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003\\nRBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014\\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480\\nR13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003\\n\u003c/TASK\u003e\\nModules linked in:\\n---[ end trace 0000000000000000 ]---\\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\\nRBP: ffffc90004347578 R0\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.321\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.269\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.210\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.149\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.79\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.11\", \"versionStartIncluding\": \"4.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7\", \"versionStartIncluding\": \"4.8\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:36:25.408Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-52435\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:36:25.408Z\", \"dateReserved\": \"2024-02-20T12:30:33.290Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-20T18:27:27.245Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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