CVE-2021-47598 (GCVE-0-2021-47598)

Vulnerability from cvelistv5 – Published: 2024-06-19 14:53 – Updated: 2026-08-05 08:48
VLAI
Title
sch_cake: do not call cake_destroy() from cake_init()
Summary
In the Linux kernel, the following vulnerability has been resolved: sch_cake: do not call cake_destroy() from cake_init() qdiscs are not supposed to call their own destroy() method from init(), because core stack already does that. syzbot was able to trigger use after free: DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock_common kernel/locking/mutex.c:586 [inline] WARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740 Modules linked in: CPU: 0 PID: 21902 Comm: syz-executor189 Not tainted 5.16.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:586 [inline] RIP: 0010:__mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740 Code: 08 84 d2 0f 85 19 08 00 00 8b 05 97 38 4b 04 85 c0 0f 85 27 f7 ff ff 48 c7 c6 20 00 ac 89 48 c7 c7 a0 fe ab 89 e8 bf 76 ba ff <0f> 0b e9 0d f7 ff ff 48 8b 44 24 40 48 8d b8 c8 08 00 00 48 89 f8 RSP: 0018:ffffc9000627f290 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88802315d700 RSI: ffffffff815f1db8 RDI: fffff52000c4fe44 RBP: ffff88818f28e000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ebb5e R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffc9000627f458 R15: 0000000093c30000 FS: 0000555556abc400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fda689c3303 CR3: 000000001cfbb000 CR4: 0000000000350ef0 Call Trace: <TASK> tcf_chain0_head_change_cb_del+0x2e/0x3d0 net/sched/cls_api.c:810 tcf_block_put_ext net/sched/cls_api.c:1381 [inline] tcf_block_put_ext net/sched/cls_api.c:1376 [inline] tcf_block_put+0xbc/0x130 net/sched/cls_api.c:1394 cake_destroy+0x3f/0x80 net/sched/sch_cake.c:2695 qdisc_create.constprop.0+0x9da/0x10f0 net/sched/sch_api.c:1293 tc_modify_qdisc+0x4c5/0x1980 net/sched/sch_api.c:1660 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f1bb06badb9 Code: Unable to access opcode bytes at RIP 0x7f1bb06bad8f. RSP: 002b:00007fff3012a658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1bb06badb9 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003 R10: 0000000000000003 R11: 0000000000000246 R12: 00007fff3012a688 R13: 00007fff3012a6a0 R14: 00007fff3012a6e0 R15: 00000000000013c2 </TASK>
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < 4e388232e630ebe4f94b4a0715ec98c0e2b314a3 (git)
Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < 0d80462fbdcafd536dcad7569e65d3d14a7e9f2f (git)
Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < 20ad1ef02f9ad5e1dda9eeb113e4c158b4806986 (git)
Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < f6deae2e2d83bd267e1986f5d71d8c458e18fd99 (git)
Affected: 046f6fd5daefac7f5abdafb436b30f63bc7c602b , < ab443c53916730862cec202078d36fd4008bea79 (git)
Create a notification for this product.
Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 4.19.222 , ≤ 4.19.* (semver)
Unaffected: 5.4.168 , ≤ 5.4.* (semver)
Unaffected: 5.10.88 , ≤ 5.10.* (semver)
Unaffected: 5.15.11 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsch_cake: do not call cake_destroy() from cake_init()\n\nqdiscs are not supposed to call their own destroy() method\nfrom init(), because core stack already does that.\n\nsyzbot was able to trigger use after free:\n\nDEBUG_LOCKS_WARN_ON(lock-\u003emagic != lock)\nWARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock_common kernel/locking/mutex.c:586 [inline]\nWARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740\nModules linked in:\nCPU: 0 PID: 21902 Comm: syz-executor189 Not tainted 5.16.0-rc4-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nRIP: 0010:__mutex_lock_common kernel/locking/mutex.c:586 [inline]\nRIP: 0010:__mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740\nCode: 08 84 d2 0f 85 19 08 00 00 8b 05 97 38 4b 04 85 c0 0f 85 27 f7 ff ff 48 c7 c6 20 00 ac 89 48 c7 c7 a0 fe ab 89 e8 bf 76 ba ff \u003c0f\u003e 0b e9 0d f7 ff ff 48 8b 44 24 40 48 8d b8 c8 08 00 00 48 89 f8\nRSP: 0018:ffffc9000627f290 EFLAGS: 00010282\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\nRDX: ffff88802315d700 RSI: ffffffff815f1db8 RDI: fffff52000c4fe44\nRBP: ffff88818f28e000 R08: 0000000000000000 R09: 0000000000000000\nR10: ffffffff815ebb5e R11: 0000000000000000 R12: 0000000000000000\nR13: dffffc0000000000 R14: ffffc9000627f458 R15: 0000000093c30000\nFS:  0000555556abc400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fda689c3303 CR3: 000000001cfbb000 CR4: 0000000000350ef0\nCall Trace:\n \u003cTASK\u003e\n tcf_chain0_head_change_cb_del+0x2e/0x3d0 net/sched/cls_api.c:810\n tcf_block_put_ext net/sched/cls_api.c:1381 [inline]\n tcf_block_put_ext net/sched/cls_api.c:1376 [inline]\n tcf_block_put+0xbc/0x130 net/sched/cls_api.c:1394\n cake_destroy+0x3f/0x80 net/sched/sch_cake.c:2695\n qdisc_create.constprop.0+0x9da/0x10f0 net/sched/sch_api.c:1293\n tc_modify_qdisc+0x4c5/0x1980 net/sched/sch_api.c:1660\n rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571\n netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345\n netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921\n sock_sendmsg_nosec net/socket.c:704 [inline]\n sock_sendmsg+0xcf/0x120 net/socket.c:724\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2463\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7f1bb06badb9\nCode: Unable to access opcode bytes at RIP 0x7f1bb06bad8f.\nRSP: 002b:00007fff3012a658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1bb06badb9\nRDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003\nRBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003\nR10: 0000000000000003 R11: 0000000000000246 R12: 00007fff3012a688\nR13: 00007fff3012a6a0 R14: 00007fff3012a6e0 R15: 00000000000013c2\n \u003c/TASK\u003e"
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    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.19\", \"versionEndExcluding\": \"4.19.222\", \"matchCriteriaId\": \"7F8B745E-51F4-4477-BF7A-D3ACB37D2D70\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.20\", \"versionEndExcluding\": \"5.4.168\", \"matchCriteriaId\": \"195EBAA1-4CCE-4898-9351-F4A0DBCAA022\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.88\", \"matchCriteriaId\": \"A657B2D0-5B9D-42BE-A3BF-228DBC1B057C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.11\", \"matchCriteriaId\": \"11274E95-438A-449A-B100-01B2B0046669\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsch_cake: do not call cake_destroy() from cake_init()\\n\\nqdiscs are not supposed to call their own destroy() method\\nfrom init(), because core stack already does that.\\n\\nsyzbot was able to trigger use after free:\\n\\nDEBUG_LOCKS_WARN_ON(lock-\u003emagic != lock)\\nWARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock_common kernel/locking/mutex.c:586 [inline]\\nWARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740\\nModules linked in:\\nCPU: 0 PID: 21902 Comm: syz-executor189 Not tainted 5.16.0-rc4-syzkaller #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nRIP: 0010:__mutex_lock_common kernel/locking/mutex.c:586 [inline]\\nRIP: 0010:__mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740\\nCode: 08 84 d2 0f 85 19 08 00 00 8b 05 97 38 4b 04 85 c0 0f 85 27 f7 ff ff 48 c7 c6 20 00 ac 89 48 c7 c7 a0 fe ab 89 e8 bf 76 ba ff \u003c0f\u003e 0b e9 0d f7 ff ff 48 8b 44 24 40 48 8d b8 c8 08 00 00 48 89 f8\\nRSP: 0018:ffffc9000627f290 EFLAGS: 00010282\\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\\nRDX: ffff88802315d700 RSI: ffffffff815f1db8 RDI: fffff52000c4fe44\\nRBP: ffff88818f28e000 R08: 0000000000000000 R09: 0000000000000000\\nR10: ffffffff815ebb5e R11: 0000000000000000 R12: 0000000000000000\\nR13: dffffc0000000000 R14: ffffc9000627f458 R15: 0000000093c30000\\nFS:  0000555556abc400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007fda689c3303 CR3: 000000001cfbb000 CR4: 0000000000350ef0\\nCall Trace:\\n \u003cTASK\u003e\\n tcf_chain0_head_change_cb_del+0x2e/0x3d0 net/sched/cls_api.c:810\\n tcf_block_put_ext net/sched/cls_api.c:1381 [inline]\\n tcf_block_put_ext net/sched/cls_api.c:1376 [inline]\\n tcf_block_put+0xbc/0x130 net/sched/cls_api.c:1394\\n cake_destroy+0x3f/0x80 net/sched/sch_cake.c:2695\\n qdisc_create.constprop.0+0x9da/0x10f0 net/sched/sch_api.c:1293\\n tc_modify_qdisc+0x4c5/0x1980 net/sched/sch_api.c:1660\\n rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571\\n netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496\\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345\\n netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921\\n sock_sendmsg_nosec net/socket.c:704 [inline]\\n sock_sendmsg+0xcf/0x120 net/socket.c:724\\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409\\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2463\\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\nRIP: 0033:0x7f1bb06badb9\\nCode: Unable to access opcode bytes at RIP 0x7f1bb06bad8f.\\nRSP: 002b:00007fff3012a658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1bb06badb9\\nRDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003\\nRBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003\\nR10: 0000000000000003 R11: 0000000000000246 R12: 00007fff3012a688\\nR13: 00007fff3012a6a0 R14: 00007fff3012a6e0 R15: 00000000000013c2\\n \u003c/TASK\u003e\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sch_cake: no llamar a cake_destroy() desde cake_init() Se supone que las qdiscs no deben llamar a su propio m\\u00e9todo destroy() desde init(), porque la pila central ya lo hace. syzbot pudo activar el use-after-free: DEBUG_LOCKS_WARN_ON(lock-\u0026gt;magic != lock) ADVERTENCIA: CPU: 0 PID: 21902 en kernel/locking/mutex.c:586 __mutex_lock_common kernel/locking/mutex.c:586 [en l\\u00ednea] ADVERTENCIA: CPU: 0 PID: 21902 en kernel/locking/mutex.c:586 __mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740 M\\u00f3dulos vinculados en: CPU: 0 PID: 21902 Comm: syz-executor189 No contaminado 5.16 .0-rc4-syzkaller #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:586 [en l\\u00ednea] RIP: 0010:__mutex_lock+ 0x9ec/0x12f0 kernel/locking/mutex.c:740 C\\u00f3digo: 08 84 d2 0f 85 19 08 00 00 8b 05 97 38 4b 04 85 c0 0f 85 27 f7 ff ff 48 c7 c6 20 00 ac 89 48 c7 c7 a0 fe ab 89 e8 bf 76 ba ff \u0026lt;0f\u0026gt; 0b e9 0d f7 ff ff 48 8b 44 24 40 48 8d b8 c8 08 00 00 48 89 f8 RSP: 0018:ffffc9000627f290 EFLAGS: 00010282 RAX: 0000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88802315d700 RSI: ffffffff815f1db8 RDI: fffff52000c4fe44 RBP: ffff88818f28e000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ebb5e R11: 00000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffc9000627f458 R15: 0000000093c30000 FS: 000055556abc400(0000) GS:ffff8880b9c0000 0(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fda689c3303 CR3: 000000001cfbb000 CR4: 0000000000350ef0 Seguimiento de llamadas:  tcf_chain0_head_change_cb_del+0x2e/0 x3d0 net/sched/cls_api.c:810 tcf_block_put_ext net/sched/cls_api.c:1381 [ en l\\u00ednea] tcf_block_put_ext net/sched/cls_api.c:1376 [en l\\u00ednea] tcf_block_put+0xbc/0x130 net/sched/cls_api.c:1394 cake_destroy+0x3f/0x80 net/sched/sch_cake.c:2695 qdisc_create.constprop.0+0x9da /0x10f0 net/sched/sch_api.c:1293 tc_modify_qdisc+0x4c5/0x1980 net/sched/sch_api.c:1660 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x153/0x420 net/netlink/ af_netlink. c:2496 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [en l\\u00ednea] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c :704 [en l\\u00ednea] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b 0 red/toma. c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [en l\\u00ednea] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f1bb06badb9 C\\u00f3digo: No se puede acceder al c\\u00f3digo de operaci\\u00f3n bytes en RIP 0x7f1bb06bad8f. RSP: 002b:00007fff3012a658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000000003 RCX: 00007f1bb06badb9 RDX: 000000000 RSI: 00000000200007c0 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003 R10: 00000003 R11: 0000000000000246 R12: 00007fff3012a688 R13: 00007fff3012a6a0 R14: 00007fff3012a6e0 R15: 00000000000013c2 \"}]",
      "id": "CVE-2021-47598",
      "lastModified": "2024-11-21T06:36:38.187",
      "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}]}",
      "published": "2024-06-19T15:15:54.383",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/0d80462fbdcafd536dcad7569e65d3d14a7e9f2f\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/20ad1ef02f9ad5e1dda9eeb113e4c158b4806986\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/4e388232e630ebe4f94b4a0715ec98c0e2b314a3\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ab443c53916730862cec202078d36fd4008bea79\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/f6deae2e2d83bd267e1986f5d71d8c458e18fd99\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/0d80462fbdcafd536dcad7569e65d3d14a7e9f2f\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/20ad1ef02f9ad5e1dda9eeb113e4c158b4806986\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/4e388232e630ebe4f94b4a0715ec98c0e2b314a3\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ab443c53916730862cec202078d36fd4008bea79\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/f6deae2e2d83bd267e1986f5d71d8c458e18fd99\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47598\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-19T15:15:54.383\",\"lastModified\":\"2026-08-04T10:17:10.110\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsch_cake: do not call cake_destroy() from cake_init()\\n\\nqdiscs are not supposed to call their own destroy() method\\nfrom init(), because core stack already does that.\\n\\nsyzbot was able to trigger use after free:\\n\\nDEBUG_LOCKS_WARN_ON(lock-\u003emagic != lock)\\nWARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock_common kernel/locking/mutex.c:586 [inline]\\nWARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740\\nModules linked in:\\nCPU: 0 PID: 21902 Comm: syz-executor189 Not tainted 5.16.0-rc4-syzkaller #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nRIP: 0010:__mutex_lock_common kernel/locking/mutex.c:586 [inline]\\nRIP: 0010:__mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740\\nCode: 08 84 d2 0f 85 19 08 00 00 8b 05 97 38 4b 04 85 c0 0f 85 27 f7 ff ff 48 c7 c6 20 00 ac 89 48 c7 c7 a0 fe ab 89 e8 bf 76 ba ff \u003c0f\u003e 0b e9 0d f7 ff ff 48 8b 44 24 40 48 8d b8 c8 08 00 00 48 89 f8\\nRSP: 0018:ffffc9000627f290 EFLAGS: 00010282\\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\\nRDX: ffff88802315d700 RSI: ffffffff815f1db8 RDI: fffff52000c4fe44\\nRBP: ffff88818f28e000 R08: 0000000000000000 R09: 0000000000000000\\nR10: ffffffff815ebb5e R11: 0000000000000000 R12: 0000000000000000\\nR13: dffffc0000000000 R14: ffffc9000627f458 R15: 0000000093c30000\\nFS:  0000555556abc400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007fda689c3303 CR3: 000000001cfbb000 CR4: 0000000000350ef0\\nCall Trace:\\n \u003cTASK\u003e\\n tcf_chain0_head_change_cb_del+0x2e/0x3d0 net/sched/cls_api.c:810\\n tcf_block_put_ext net/sched/cls_api.c:1381 [inline]\\n tcf_block_put_ext net/sched/cls_api.c:1376 [inline]\\n tcf_block_put+0xbc/0x130 net/sched/cls_api.c:1394\\n cake_destroy+0x3f/0x80 net/sched/sch_cake.c:2695\\n qdisc_create.constprop.0+0x9da/0x10f0 net/sched/sch_api.c:1293\\n tc_modify_qdisc+0x4c5/0x1980 net/sched/sch_api.c:1660\\n rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571\\n netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496\\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345\\n netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921\\n sock_sendmsg_nosec net/socket.c:704 [inline]\\n sock_sendmsg+0xcf/0x120 net/socket.c:724\\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409\\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2463\\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\nRIP: 0033:0x7f1bb06badb9\\nCode: Unable to access opcode bytes at RIP 0x7f1bb06bad8f.\\nRSP: 002b:00007fff3012a658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1bb06badb9\\nRDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003\\nRBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003\\nR10: 0000000000000003 R11: 0000000000000246 R12: 00007fff3012a688\\nR13: 00007fff3012a6a0 R14: 00007fff3012a6e0 R15: 00000000000013c2\\n \u003c/TASK\u003e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sch_cake: no llamar a cake_destroy() desde cake_init() Se supone que las qdiscs no deben llamar a su propio m\u00e9todo destroy() desde init(), porque la pila central ya lo hace. syzbot pudo activar el use-after-free: DEBUG_LOCKS_WARN_ON(lock-\u0026gt;magic != lock) ADVERTENCIA: CPU: 0 PID: 21902 en kernel/locking/mutex.c:586 __mutex_lock_common kernel/locking/mutex.c:586 [en l\u00ednea] ADVERTENCIA: CPU: 0 PID: 21902 en kernel/locking/mutex.c:586 __mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740 M\u00f3dulos vinculados en: CPU: 0 PID: 21902 Comm: syz-executor189 No contaminado 5.16 .0-rc4-syzkaller #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:586 [en l\u00ednea] RIP: 0010:__mutex_lock+ 0x9ec/0x12f0 kernel/locking/mutex.c:740 C\u00f3digo: 08 84 d2 0f 85 19 08 00 00 8b 05 97 38 4b 04 85 c0 0f 85 27 f7 ff ff 48 c7 c6 20 00 ac 89 48 c7 c7 a0 fe ab 89 e8 bf 76 ba ff \u0026lt;0f\u0026gt; 0b e9 0d f7 ff ff 48 8b 44 24 40 48 8d b8 c8 08 00 00 48 89 f8 RSP: 0018:ffffc9000627f290 EFLAGS: 00010282 RAX: 0000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88802315d700 RSI: ffffffff815f1db8 RDI: fffff52000c4fe44 RBP: ffff88818f28e000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ebb5e R11: 00000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffc9000627f458 R15: 0000000093c30000 FS: 000055556abc400(0000) GS:ffff8880b9c0000 0(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fda689c3303 CR3: 000000001cfbb000 CR4: 0000000000350ef0 Seguimiento de llamadas:  tcf_chain0_head_change_cb_del+0x2e/0 x3d0 net/sched/cls_api.c:810 tcf_block_put_ext net/sched/cls_api.c:1381 [ en l\u00ednea] tcf_block_put_ext net/sched/cls_api.c:1376 [en l\u00ednea] tcf_block_put+0xbc/0x130 net/sched/cls_api.c:1394 cake_destroy+0x3f/0x80 net/sched/sch_cake.c:2695 qdisc_create.constprop.0+0x9da /0x10f0 net/sched/sch_api.c:1293 tc_modify_qdisc+0x4c5/0x1980 net/sched/sch_api.c:1660 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x153/0x420 net/netlink/ af_netlink. c:2496 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [en l\u00ednea] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c :704 [en l\u00ednea] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b 0 red/toma. c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f1bb06badb9 C\u00f3digo: No se puede acceder al c\u00f3digo de operaci\u00f3n bytes en RIP 0x7f1bb06bad8f. RSP: 002b:00007fff3012a658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000000000003 RCX: 00007f1bb06badb9 RDX: 000000000 RSI: 00000000200007c0 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003 R10: 00000003 R11: 0000000000000246 R12: 00007fff3012a688 R13: 00007fff3012a6a0 R14: 00007fff3012a6e0 R15: 00000000000013c2 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:54:52+00:00",
      "cve": "CVE-2021-47598",
      "id": "CVE-2021-47598",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: sch_cake: do not call cake_destroy() from cake_init()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47598.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-08-06T02:05:13Z",
      "cve": "CVE-2021-47598",
      "id": "CVE-2021-47598",
      "initial_release_date": "2024-06-21T03:52:20Z",
      "product_status:known_affected": "292",
      "product_status:known_not_affected": "146",
      "product_status:recommended": "686",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-47598",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47598.json",
      "version": "58"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4e388232e630ebe4f94b4a0715ec98c0e2b314a3\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/0d80462fbdcafd536dcad7569e65d3d14a7e9f2f\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/20ad1ef02f9ad5e1dda9eeb113e4c158b4806986\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/f6deae2e2d83bd267e1986f5d71d8c458e18fd99\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ab443c53916730862cec202078d36fd4008bea79\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:47:39.567Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47598\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:12:20.720513Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:26.394Z\"}}], \"cna\": {\"title\": \"sch_cake: do not call cake_destroy() from cake_init()\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - Triggered via local netlink RTM_NEWQDISC (tc qdisc add ... cake) through sendmsg \\u2192 rtnetlink \\u2192 tc_modify_qdisc \\u2192 qdisc_create \\u2192 cake_init; not reachable from remote packet processing.\\nAC:L - The attacker can reliably force the ENOMEM path by exhausting memory before creating the cake qdisc; the ~700KB+ kvcalloc is large and easy to fail under attacker-controlled memory pressure, with no race or other condition outside their control.\\nPR:L - Creating a qdisc requires CAP_NET_ADMIN checked via netlink_net_capable against the network namespace\u0027s user_ns, which an unprivileged user obtains through user+net namespaces (e.g. unshare -Urn) and attaching cake to lo.\\nUI:N - The attacker triggers the bug entirely with their own netlink messages; no victim action is required.\\nS:U - This is a standard in-kernel UAF/privilege-escalation path within the same kernel security authority; it does not cross VM, IOMMU, or other security boundaries.\\nC:H - Double-free/UAF of the heap-allocated tcf_block allows reclaim and controlled reads of the freed object, enabling arbitrary kernel information disclosure.\\nI:H - The same UAF/double-free of tcf_block enables heap spraying and corruption of the reclaimed object (including function pointers/callbacks), supporting arbitrary write and control-flow hijacking.\\nA:H - The UAF reliably causes kernel warnings/oopses (as seen in the syzbot report locking a freed mutex) and can panic or hang the system.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"046f6fd5daefac7f5abdafb436b30f63bc7c602b\", \"lessThan\": \"4e388232e630ebe4f94b4a0715ec98c0e2b314a3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"046f6fd5daefac7f5abdafb436b30f63bc7c602b\", \"lessThan\": \"0d80462fbdcafd536dcad7569e65d3d14a7e9f2f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"046f6fd5daefac7f5abdafb436b30f63bc7c602b\", \"lessThan\": \"20ad1ef02f9ad5e1dda9eeb113e4c158b4806986\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"046f6fd5daefac7f5abdafb436b30f63bc7c602b\", \"lessThan\": \"f6deae2e2d83bd267e1986f5d71d8c458e18fd99\", \"versionType\": \"git\"}, {\"status\": 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\"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/sched/sch_cake.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4e388232e630ebe4f94b4a0715ec98c0e2b314a3\"}, {\"url\": \"https://git.kernel.org/stable/c/0d80462fbdcafd536dcad7569e65d3d14a7e9f2f\"}, {\"url\": \"https://git.kernel.org/stable/c/20ad1ef02f9ad5e1dda9eeb113e4c158b4806986\"}, {\"url\": \"https://git.kernel.org/stable/c/f6deae2e2d83bd267e1986f5d71d8c458e18fd99\"}, {\"url\": \"https://git.kernel.org/stable/c/ab443c53916730862cec202078d36fd4008bea79\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsch_cake: do not call cake_destroy() from cake_init()\\n\\nqdiscs are not supposed to call their own destroy() method\\nfrom init(), because core stack already does that.\\n\\nsyzbot was able to trigger use after free:\\n\\nDEBUG_LOCKS_WARN_ON(lock-\u003emagic != lock)\\nWARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock_common kernel/locking/mutex.c:586 [inline]\\nWARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740\\nModules linked in:\\nCPU: 0 PID: 21902 Comm: syz-executor189 Not tainted 5.16.0-rc4-syzkaller #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nRIP: 0010:__mutex_lock_common kernel/locking/mutex.c:586 [inline]\\nRIP: 0010:__mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740\\nCode: 08 84 d2 0f 85 19 08 00 00 8b 05 97 38 4b 04 85 c0 0f 85 27 f7 ff ff 48 c7 c6 20 00 ac 89 48 c7 c7 a0 fe ab 89 e8 bf 76 ba ff \u003c0f\u003e 0b e9 0d f7 ff ff 48 8b 44 24 40 48 8d b8 c8 08 00 00 48 89 f8\\nRSP: 0018:ffffc9000627f290 EFLAGS: 00010282\\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\\nRDX: ffff88802315d700 RSI: ffffffff815f1db8 RDI: fffff52000c4fe44\\nRBP: ffff88818f28e000 R08: 0000000000000000 R09: 0000000000000000\\nR10: ffffffff815ebb5e R11: 0000000000000000 R12: 0000000000000000\\nR13: dffffc0000000000 R14: ffffc9000627f458 R15: 0000000093c30000\\nFS:  0000555556abc400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007fda689c3303 CR3: 000000001cfbb000 CR4: 0000000000350ef0\\nCall Trace:\\n \u003cTASK\u003e\\n tcf_chain0_head_change_cb_del+0x2e/0x3d0 net/sched/cls_api.c:810\\n tcf_block_put_ext net/sched/cls_api.c:1381 [inline]\\n tcf_block_put_ext net/sched/cls_api.c:1376 [inline]\\n tcf_block_put+0xbc/0x130 net/sched/cls_api.c:1394\\n cake_destroy+0x3f/0x80 net/sched/sch_cake.c:2695\\n qdisc_create.constprop.0+0x9da/0x10f0 net/sched/sch_api.c:1293\\n tc_modify_qdisc+0x4c5/0x1980 net/sched/sch_api.c:1660\\n rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571\\n netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496\\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345\\n netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921\\n sock_sendmsg_nosec net/socket.c:704 [inline]\\n sock_sendmsg+0xcf/0x120 net/socket.c:724\\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409\\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2463\\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\nRIP: 0033:0x7f1bb06badb9\\nCode: Unable to access opcode bytes at RIP 0x7f1bb06bad8f.\\nRSP: 002b:00007fff3012a658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1bb06badb9\\nRDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003\\nRBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003\\nR10: 0000000000000003 R11: 0000000000000246 R12: 00007fff3012a688\\nR13: 00007fff3012a6a0 R14: 00007fff3012a6e0 R15: 00000000000013c2\\n \u003c/TASK\u003e\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.222\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.168\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.88\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.11\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, 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      "cveMetadata": "{\"cveId\": \"CVE-2021-47598\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:48:31.780Z\", \"dateReserved\": \"2024-05-24T15:11:00.734Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T14:53:59.549Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.