cve-2024-44987
Vulnerability from cvelistv5
Published
2024-09-04 19:54
Modified
2024-12-19 09:19
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ipv6: prevent UAF in ip6_send_skb()
syzbot reported an UAF in ip6_send_skb() [1]
After ip6_local_out() has returned, we no longer can safely
dereference rt, unless we hold rcu_read_lock().
A similar issue has been fixed in commit
a688caa34beb ("ipv6: take rcu lock in rawv6_send_hdrinc()")
Another potential issue in ip6_finish_output2() is handled in a
separate patch.
[1]
BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964
Read of size 8 at addr ffff88806dde4858 by task syz.1.380/6530
CPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
kasan_report+0x143/0x180 mm/kasan/report.c:601
ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964
rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588
rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x1a6/0x270 net/socket.c:745
sock_write_iter+0x2dd/0x400 net/socket.c:1160
do_iter_readv_writev+0x60a/0x890
vfs_writev+0x37c/0xbb0 fs/read_write.c:971
do_writev+0x1b1/0x350 fs/read_write.c:1018
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f936bf79e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79
RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8
</TASK>
Allocated by task 6530:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
dst_alloc+0x12b/0x190 net/core/dst.c:89
ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670
make_blackhole net/xfrm/xfrm_policy.c:3120 [inline]
xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313
ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257
rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x1a6/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 45:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4548
dst_destroy+0x2ac/0x460 net/core/dst.c:124
rcu_do_batch kernel/rcu/tree.c:2569 [inline]
rcu_core+0xafd/0x1830 kernel/rcu/tree.
---truncated---
References
Impacted products
| Vendor | Product | Version | |||||
|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 0625491493d9000e4556bf566d205c28c8e7dc4e Version: 0625491493d9000e4556bf566d205c28c8e7dc4e Version: 0625491493d9000e4556bf566d205c28c8e7dc4e Version: 0625491493d9000e4556bf566d205c28c8e7dc4e Version: 0625491493d9000e4556bf566d205c28c8e7dc4e Version: 0625491493d9000e4556bf566d205c28c8e7dc4e Version: 0625491493d9000e4556bf566d205c28c8e7dc4e Version: 0625491493d9000e4556bf566d205c28c8e7dc4e |
||||
|
|||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-44987",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-04T20:20:00.407827Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-09-04T20:21:05.118Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/ipv6/ip6_output.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "571567e0277008459750f0728f246086b2659429",
"status": "affected",
"version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
"versionType": "git"
},
{
"lessThan": "ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8",
"status": "affected",
"version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
"versionType": "git"
},
{
"lessThan": "cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e",
"status": "affected",
"version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
"versionType": "git"
},
{
"lessThan": "24e93695b1239fbe4c31e224372be77f82dab69a",
"status": "affected",
"version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
"versionType": "git"
},
{
"lessThan": "9a3e55afa95ed4ac9eda112d4f918af645d72f25",
"status": "affected",
"version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
"versionType": "git"
},
{
"lessThan": "af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011",
"status": "affected",
"version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
"versionType": "git"
},
{
"lessThan": "e44bd76dd072756e674f45c5be00153f4ded68b2",
"status": "affected",
"version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
"versionType": "git"
},
{
"lessThan": "faa389b2fbaaec7fd27a390b4896139f9da662e3",
"status": "affected",
"version": "0625491493d9000e4556bf566d205c28c8e7dc4e",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/ipv6/ip6_output.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.32"
},
{
"lessThan": "2.6.32",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.321",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.283",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.225",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.166",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.107",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.48",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.10.*",
"status": "unaffected",
"version": "6.10.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.11",
"versionType": "original_commit_for_fix"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent UAF in ip6_send_skb()\n\nsyzbot reported an UAF in ip6_send_skb() [1]\n\nAfter ip6_local_out() has returned, we no longer can safely\ndereference rt, unless we hold rcu_read_lock().\n\nA similar issue has been fixed in commit\na688caa34beb (\"ipv6: take rcu lock in rawv6_send_hdrinc()\")\n\nAnother potential issue in ip6_finish_output2() is handled in a\nseparate patch.\n\n[1]\n BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\nRead of size 8 at addr ffff88806dde4858 by task syz.1.380/6530\n\nCPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:93 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\n rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588\n rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0x1a6/0x270 net/socket.c:745\n sock_write_iter+0x2dd/0x400 net/socket.c:1160\n do_iter_readv_writev+0x60a/0x890\n vfs_writev+0x37c/0xbb0 fs/read_write.c:971\n do_writev+0x1b1/0x350 fs/read_write.c:1018\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f936bf79e79\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014\nRAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79\nRDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004\nRBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8\n \u003c/TASK\u003e\n\nAllocated by task 6530:\n kasan_save_stack mm/kasan/common.c:47 [inline]\n kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n unpoison_slab_object mm/kasan/common.c:312 [inline]\n __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338\n kasan_slab_alloc include/linux/kasan.h:201 [inline]\n slab_post_alloc_hook mm/slub.c:3988 [inline]\n slab_alloc_node mm/slub.c:4037 [inline]\n kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044\n dst_alloc+0x12b/0x190 net/core/dst.c:89\n ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670\n make_blackhole net/xfrm/xfrm_policy.c:3120 [inline]\n xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313\n ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257\n rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0x1a6/0x270 net/socket.c:745\n ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597\n ___sys_sendmsg net/socket.c:2651 [inline]\n __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nFreed by task 45:\n kasan_save_stack mm/kasan/common.c:47 [inline]\n kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\n poison_slab_object+0xe0/0x150 mm/kasan/common.c:240\n __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256\n kasan_slab_free include/linux/kasan.h:184 [inline]\n slab_free_hook mm/slub.c:2252 [inline]\n slab_free mm/slub.c:4473 [inline]\n kmem_cache_free+0x145/0x350 mm/slub.c:4548\n dst_destroy+0x2ac/0x460 net/core/dst.c:124\n rcu_do_batch kernel/rcu/tree.c:2569 [inline]\n rcu_core+0xafd/0x1830 kernel/rcu/tree.\n---truncated---"
}
],
"providerMetadata": {
"dateUpdated": "2024-12-19T09:19:42.261Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/571567e0277008459750f0728f246086b2659429"
},
{
"url": "https://git.kernel.org/stable/c/ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8"
},
{
"url": "https://git.kernel.org/stable/c/cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e"
},
{
"url": "https://git.kernel.org/stable/c/24e93695b1239fbe4c31e224372be77f82dab69a"
},
{
"url": "https://git.kernel.org/stable/c/9a3e55afa95ed4ac9eda112d4f918af645d72f25"
},
{
"url": "https://git.kernel.org/stable/c/af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011"
},
{
"url": "https://git.kernel.org/stable/c/e44bd76dd072756e674f45c5be00153f4ded68b2"
},
{
"url": "https://git.kernel.org/stable/c/faa389b2fbaaec7fd27a390b4896139f9da662e3"
}
],
"title": "ipv6: prevent UAF in ip6_send_skb()",
"x_generator": {
"engine": "bippy-5f407fcff5a0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-44987",
"datePublished": "2024-09-04T19:54:35.510Z",
"dateReserved": "2024-08-21T05:34:56.671Z",
"dateUpdated": "2024-12-19T09:19:42.261Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2024-44987\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-04T20:15:07.890\",\"lastModified\":\"2024-09-05T17:53:54.687\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv6: prevent UAF in ip6_send_skb()\\n\\nsyzbot reported an UAF in ip6_send_skb() [1]\\n\\nAfter ip6_local_out() has returned, we no longer can safely\\ndereference rt, unless we hold rcu_read_lock().\\n\\nA similar issue has been fixed in commit\\na688caa34beb (\\\"ipv6: take rcu lock in rawv6_send_hdrinc()\\\")\\n\\nAnother potential issue in ip6_finish_output2() is handled in a\\nseparate patch.\\n\\n[1]\\n BUG: KASAN: slab-use-after-free in ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\\nRead of size 8 at addr ffff88806dde4858 by task syz.1.380/6530\\n\\nCPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 Not tainted 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:93 [inline]\\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\\n print_address_description mm/kasan/report.c:377 [inline]\\n print_report+0x169/0x550 mm/kasan/report.c:488\\n kasan_report+0x143/0x180 mm/kasan/report.c:601\\n ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964\\n rawv6_push_pending_frames+0x75c/0x9e0 net/ipv6/raw.c:588\\n rawv6_sendmsg+0x19c7/0x23c0 net/ipv6/raw.c:926\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x1a6/0x270 net/socket.c:745\\n sock_write_iter+0x2dd/0x400 net/socket.c:1160\\n do_iter_readv_writev+0x60a/0x890\\n vfs_writev+0x37c/0xbb0 fs/read_write.c:971\\n do_writev+0x1b1/0x350 fs/read_write.c:1018\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f936bf79e79\\nCode: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014\\nRAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79\\nRDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004\\nRBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8\\n \u003c/TASK\u003e\\n\\nAllocated by task 6530:\\n kasan_save_stack mm/kasan/common.c:47 [inline]\\n kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n unpoison_slab_object mm/kasan/common.c:312 [inline]\\n __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338\\n kasan_slab_alloc include/linux/kasan.h:201 [inline]\\n slab_post_alloc_hook mm/slub.c:3988 [inline]\\n slab_alloc_node mm/slub.c:4037 [inline]\\n kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044\\n dst_alloc+0x12b/0x190 net/core/dst.c:89\\n ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670\\n make_blackhole net/xfrm/xfrm_policy.c:3120 [inline]\\n xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313\\n ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257\\n rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898\\n sock_sendmsg_nosec net/socket.c:730 [inline]\\n __sock_sendmsg+0x1a6/0x270 net/socket.c:745\\n ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597\\n ___sys_sendmsg net/socket.c:2651 [inline]\\n __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nFreed by task 45:\\n kasan_save_stack mm/kasan/common.c:47 [inline]\\n kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\\n poison_slab_object+0xe0/0x150 mm/kasan/common.c:240\\n __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256\\n kasan_slab_free include/linux/kasan.h:184 [inline]\\n slab_free_hook mm/slub.c:2252 [inline]\\n slab_free mm/slub.c:4473 [inline]\\n kmem_cache_free+0x145/0x350 mm/slub.c:4548\\n dst_destroy+0x2ac/0x460 net/core/dst.c:124\\n rcu_do_batch kernel/rcu/tree.c:2569 [inline]\\n rcu_core+0xafd/0x1830 kernel/rcu/tree.\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv6: evitar UAF en ip6_send_skb() syzbot inform\u00f3 de un UAF en ip6_send_skb() [1] Despu\u00e9s de que ip6_local_out() haya regresado, ya no podemos desreferenciar rt de forma segura, a menos que mantengamos rcu_read_lock(). Se ha solucionado un problema similar en el commit a688caa34beb (\\\"ipv6: tomar bloqueo rcu en rawv6_send_hdrinc()\\\") Otro problema potencial en ip6_finish_output2() se maneja en un parche independiente. [1] ERROR: KASAN: slab-use-after-free en ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88806dde4858 por la tarea syz.1.380/6530 CPU: 1 UID: 0 PID: 6530 Comm: syz.1.380 No contaminado 6.11.0-rc3-syzkaller-00306-gdf6cbc62cc9b #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:93 [en l\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 descripci\u00f3n_direcci\u00f3n_impresi\u00f3n mm/kasan/report.c:377 [en l\u00ednea] informe_impresi\u00f3n+0x169/0x550 mm/kasan/report.c:488 informe_kasan+0x143/0x180 mm/kasan/report.c:601 ip6_send_skb+0x18d/0x230 net/ipv6/ip6_output.c:1964 tramas_pendientes_de_env\u00edo_sin_formato_v6+0x75c/0x9e0 net/ipv6/raw.c:588 env\u00edo_sin_formato_v6+0x19c7/0x23c0 net/ipv6/raw.c:926 env\u00edo_sin_formato_v6_nosec net/socket.c:730 [en l\u00ednea] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 sock_write_iter+0x2dd/0x400 net/socket.c:1160 do_iter_readv_writev+0x60a/0x890 vfs_writev+0x37c/0xbb0 fs/read_write.c:971 do_writev+0x1b1/0x350 fs/read_write.c:1018 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f DESCANSE EN P\u00c9RDIDA: 0033:0x7f936bf79e79 C\u00f3digo: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f936cd7f038 EFLAGS: 00000246 ORIG_RAX: 00000000000000014 RAX: ffffffffffffffda RBX: 00007f936c115f80 RCX: 00007f936bf79e79 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f936bfe7916 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000000246 R12: 00000000000000000 R13: 0000000000000000 R14: 00007f936c115f80 R15: 00007fff2860a7a8 Asignado por la tarea 6530: kasan_save_stack mm/kasan/common.c:47 [en l\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [en l\u00ednea] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [en l\u00ednea] slab_post_alloc_hook mm/slub.c:3988 [en l\u00ednea] slab_alloc_node mm/slub.c:4037 [en l\u00ednea] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044 dst_alloc+0x12b/0x190 net/core/dst.c:89 ip6_blackhole_route+0x59/0x340 net/ipv6/route.c:2670 make_blackhole net/xfrm/xfrm_policy.c:3120 [en l\u00ednea] xfrm_lookup_route+0xd1/0x1c0 net/xfrm/xfrm_policy.c:3313 ip6_dst_lookup_flow+0x13e/0x180 net/ipv6/ip6_output.c:1257 rawv6_sendmsg+0x1283/0x23c0 net/ipv6/raw.c:898 sock_sendmsg_nosec net/socket.c:730 [en l\u00ednea] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [en l\u00ednea] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Liberado por la tarea 45: kasan_save_stack mm/kasan/common.c:47 [en l\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [en l\u00ednea] slab_free_hook mm/slub.c:2252 ---truncado---\"}],\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.32\",\"versionEndExcluding\":\"4.19.321\",\"matchCriteriaId\":\"9ADDB000-FDCD-401B-AD98-165AB6788080\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.283\",\"matchCriteriaId\":\"8E6B390A-0CE6-44FC-8CD5-BE8226D6D24C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.225\",\"matchCriteriaId\":\"C57B46A9-B105-4792-8481-1870DEFB436A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.166\",\"matchCriteriaId\":\"913ED6CD-8ACF-48AF-AA18-7880881DD402\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.107\",\"matchCriteriaId\":\"53954FF8-CB48-4302-BC4C-9DA7A88F44A2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.48\",\"matchCriteriaId\":\"9DE9201A-CE6B-4726-BABB-8265EA0F8AE4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.7\",\"matchCriteriaId\":\"D2AFDFD1-D95A-4EB7-843B-5E7659518B67\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/24e93695b1239fbe4c31e224372be77f82dab69a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/571567e0277008459750f0728f246086b2659429\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9a3e55afa95ed4ac9eda112d4f918af645d72f25\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/af1dde074ee2ed7dd5bdca4e7e8ba17f44e7b011\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cb5880a0de12c7f618d2bdd84e2d985f1e06ed7e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ce2f6cfab2c637d0bd9762104023a15d0ab7c0a8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e44bd76dd072756e674f45c5be00153f4ded68b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/faa389b2fbaaec7fd27a390b4896139f9da662e3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.