CVE-2024-36972 (GCVE-0-2024-36972)

Vulnerability from cvelistv5 – Published: 2024-06-10 14:57 – Updated: 2026-05-23 15:48
VLAI
Title
af_unix: Update unix_sk(sk)->oob_skb under sk_receive_queue lock.
Summary
In the Linux kernel, the following vulnerability has been resolved: af_unix: Update unix_sk(sk)->oob_skb under sk_receive_queue lock. Billy Jheng Bing-Jhong reported a race between __unix_gc() and queue_oob(). __unix_gc() tries to garbage-collect close()d inflight sockets, and then if the socket has MSG_OOB in unix_sk(sk)->oob_skb, GC will drop the reference and set NULL to it locklessly. However, the peer socket still can send MSG_OOB message and queue_oob() can update unix_sk(sk)->oob_skb concurrently, leading NULL pointer dereference. [0] To fix the issue, let's update unix_sk(sk)->oob_skb under the sk_receive_queue's lock and take it everywhere we touch oob_skb. Note that we defer kfree_skb() in manage_oob() to silence lockdep false-positive (See [1]). [0]: BUG: kernel NULL pointer dereference, address: 0000000000000008 PF: supervisor write access in kernel mode PF: error_code(0x0002) - not-present page PGD 8000000009f5e067 P4D 8000000009f5e067 PUD 9f5d067 PMD 0 Oops: 0002 [#1] PREEMPT SMP PTI CPU: 3 PID: 50 Comm: kworker/3:1 Not tainted 6.9.0-rc5-00191-gd091e579b864 #110 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 Workqueue: events delayed_fput RIP: 0010:skb_dequeue (./include/linux/skbuff.h:2386 ./include/linux/skbuff.h:2402 net/core/skbuff.c:3847) Code: 39 e3 74 3e 8b 43 10 48 89 ef 83 e8 01 89 43 10 49 8b 44 24 08 49 c7 44 24 08 00 00 00 00 49 8b 14 24 49 c7 04 24 00 00 00 00 <48> 89 42 08 48 89 10 e8 e7 c5 42 00 4c 89 e0 5b 5d 41 5c c3 cc cc RSP: 0018:ffffc900001bfd48 EFLAGS: 00000002 RAX: 0000000000000000 RBX: ffff8880088f5ae8 RCX: 00000000361289f9 RDX: 0000000000000000 RSI: 0000000000000206 RDI: ffff8880088f5b00 RBP: ffff8880088f5b00 R08: 0000000000080000 R09: 0000000000000001 R10: 0000000000000003 R11: 0000000000000001 R12: ffff8880056b6a00 R13: ffff8880088f5280 R14: 0000000000000001 R15: ffff8880088f5a80 FS: 0000000000000000(0000) GS:ffff88807dd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000006314000 CR4: 00000000007506f0 PKRU: 55555554 Call Trace: <TASK> unix_release_sock (net/unix/af_unix.c:654) unix_release (net/unix/af_unix.c:1050) __sock_release (net/socket.c:660) sock_close (net/socket.c:1423) __fput (fs/file_table.c:423) delayed_fput (fs/file_table.c:444 (discriminator 3)) process_one_work (kernel/workqueue.c:3259) worker_thread (kernel/workqueue.c:3329 kernel/workqueue.c:3416) kthread (kernel/kthread.c:388) ret_from_fork (arch/x86/kernel/process.c:153) ret_from_fork_asm (arch/x86/entry/entry_64.S:257) </TASK> Modules linked in: CR2: 0000000000000008
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4fe505c63aa3273135a57597fda761e9aecc7668 , < 518a994aa0b87d96f1bc6678a7035df5d1fcd7a1 (git)
Affected: e0e09186d8821ad59806115d347ea32efa43ca4b , < 4bf6964451c3cb411fbaa1ae8b214b3d97a59bf1 (git)
Affected: b74aa9ce13d02b7fd37c5325b99854f91b9b4276 , < d59ae9314b97e01c76a4171472441e55721ba636 (git)
Affected: 1279f9d9dec2d7462823a18c29ad61359e0a007d , < 4708f49add84a57ce0ccc7bf9a6269845c631cc3 (git)
Affected: 1279f9d9dec2d7462823a18c29ad61359e0a007d , < 9841991a446c87f90f66f4b9fee6fe934c1336a2 (git)
Affected: 82ae47c5c3a6b27fdc0f9e83c1499cb439c56140 (git)
Affected: 5.15.149 , < 5.15.161 (semver)
Affected: 6.1.78 , < 6.1.93 (semver)
Affected: 6.6.17 , < 6.6.33 (semver)
Affected: 6.7.5 , < 6.8 (semver)
Create a notification for this product.
Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 5.15.161 , ≤ 5.15.* (semver)
Unaffected: 6.1.93 , ≤ 6.1.* (semver)
Unaffected: 6.6.33 , ≤ 6.6.* (semver)
Unaffected: 6.9.4 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
linux linux_kernel Affected: 4fe505c63aa3 , < 518a994aa0b8 (git)
Affected: e0e09186d882 , < 4bf6964451c3 (git)
Affected: b74aa9ce13d0 , < d59ae9314b97 (custom)
Affected: 1279f9d9dec2 , < 4708f49add84 (custom)
Affected: 1279f9d9dec2 , < 9841991a446c (custom)
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
 Create a notification for this product.
linux linux_kernel Affected: 6.8
    cpe:2.3:o:linux:linux_kernel:6.8:-:*:*:*:*:*:*
 Create a notification for this product.
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    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-36972\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-10T15:15:52.617\",\"lastModified\":\"2025-04-01T18:36:27.320\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\naf_unix: Update unix_sk(sk)-\u003eoob_skb under sk_receive_queue lock.\\n\\nBilly Jheng Bing-Jhong reported a race between __unix_gc() and\\nqueue_oob().\\n\\n__unix_gc() tries to garbage-collect close()d inflight sockets,\\nand then if the socket has MSG_OOB in unix_sk(sk)-\u003eoob_skb, GC\\nwill drop the reference and set NULL to it locklessly.\\n\\nHowever, the peer socket still can send MSG_OOB message and\\nqueue_oob() can update unix_sk(sk)-\u003eoob_skb concurrently, leading\\nNULL pointer dereference. [0]\\n\\nTo fix the issue, let\u0027s update unix_sk(sk)-\u003eoob_skb under the\\nsk_receive_queue\u0027s lock and take it everywhere we touch oob_skb.\\n\\nNote that we defer kfree_skb() in manage_oob() to silence lockdep\\nfalse-positive (See [1]).\\n\\n[0]:\\nBUG: kernel NULL pointer dereference, address: 0000000000000008\\n PF: supervisor write access in kernel mode\\n PF: error_code(0x0002) - not-present page\\nPGD 8000000009f5e067 P4D 8000000009f5e067 PUD 9f5d067 PMD 0\\nOops: 0002 [#1] PREEMPT SMP PTI\\nCPU: 3 PID: 50 Comm: kworker/3:1 Not tainted 6.9.0-rc5-00191-gd091e579b864 #110\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\\nWorkqueue: events delayed_fput\\nRIP: 0010:skb_dequeue (./include/linux/skbuff.h:2386 ./include/linux/skbuff.h:2402 net/core/skbuff.c:3847)\\nCode: 39 e3 74 3e 8b 43 10 48 89 ef 83 e8 01 89 43 10 49 8b 44 24 08 49 c7 44 24 08 00 00 00 00 49 8b 14 24 49 c7 04 24 00 00 00 00 \u003c48\u003e 89 42 08 48 89 10 e8 e7 c5 42 00 4c 89 e0 5b 5d 41 5c c3 cc cc\\nRSP: 0018:ffffc900001bfd48 EFLAGS: 00000002\\nRAX: 0000000000000000 RBX: ffff8880088f5ae8 RCX: 00000000361289f9\\nRDX: 0000000000000000 RSI: 0000000000000206 RDI: ffff8880088f5b00\\nRBP: ffff8880088f5b00 R08: 0000000000080000 R09: 0000000000000001\\nR10: 0000000000000003 R11: 0000000000000001 R12: ffff8880056b6a00\\nR13: ffff8880088f5280 R14: 0000000000000001 R15: ffff8880088f5a80\\nFS:  0000000000000000(0000) GS:ffff88807dd80000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000000000008 CR3: 0000000006314000 CR4: 00000000007506f0\\nPKRU: 55555554\\nCall Trace:\\n \u003cTASK\u003e\\n unix_release_sock (net/unix/af_unix.c:654)\\n unix_release (net/unix/af_unix.c:1050)\\n __sock_release (net/socket.c:660)\\n sock_close (net/socket.c:1423)\\n __fput (fs/file_table.c:423)\\n delayed_fput (fs/file_table.c:444 (discriminator 3))\\n process_one_work (kernel/workqueue.c:3259)\\n worker_thread (kernel/workqueue.c:3329 kernel/workqueue.c:3416)\\n kthread (kernel/kthread.c:388)\\n ret_from_fork (arch/x86/kernel/process.c:153)\\n ret_from_fork_asm (arch/x86/entry/entry_64.S:257)\\n \u003c/TASK\u003e\\nModules linked in:\\nCR2: 0000000000000008\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: af_unix: actualice unix_sk(sk)-\u0026gt;oob_skb bajo el bloqueo sk_receive_queue. Billy Jheng Bing-Jhong inform\u00f3 de una ejecuci\u00f3n entre __unix_gc() y queue_oob(). __unix_gc() intenta recolectar basura de sockets en vuelo close()d, y luego, si el socket tiene MSG_OOB en unix_sk(sk)-\u0026gt;oob_skb, GC eliminar\u00e1 la referencia y establecer\u00e1 NULL sin bloqueo. Sin embargo, el socket del par a\u00fan puede enviar el mensaje MSG_OOB y queue_oob() puede actualizar unix_sk(sk)-\u0026gt;oob_skb simult\u00e1neamente, lo que lleva a la desreferencia del puntero NULL. [0] Para solucionar el problema, actualicemos unix_sk(sk)-\u0026gt;oob_skb bajo el bloqueo de sk_receive_queue y lo llevemos a todos los lugares donde toquemos oob_skb. Tenga en cuenta que posponemos kfree_skb() en Manage_oob() para silenciar el falso positivo de Lockdep (consulte [1]). [0]: ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000008 PF: acceso de escritura del supervisor en modo kernel PF: error_code(0x0002) - p\u00e1gina no presente PGD 8000000009f5e067 P4D 8000000009f5e067 PUD 9f5d067 PMD 0 Ups: 02 [#1] SMP ADELANTADO PTI CPU: 3 PID: 50 Comm: kworker/3:1 No contaminado 6.9.0-rc5-00191-gd091e579b864 #110 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0- gd239552ce722-prebuilt.qemu.org 01/04/2014 Cola de trabajo: eventos retrasados_fput RIP: 0010:skb_dequeue (./include/linux/skbuff.h:2386 ./include/linux/skbuff.h:2402 net/core/skbuff. c:3847) C\u00f3digo: 39 e3 74 3e 8b 43 10 48 89 ef 83 e8 01 89 43 10 49 8b 44 24 08 49 c7 44 24 08 00 00 00 00 49 8b 14 24 49 c7 04 24 00 0 00 00 \u0026lt;48 \u0026gt; 89 42 08 48 89 10 e8 e7 c5 42 00 4c 89 e0 5b 5d 41 5c c3 cc cc RSP: 0018:ffffc900001bfd48 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 80088f5ae8 RCX: 00000000361289f9 RDX: 0000000000000000 RSI: 0000000000000206 RDI: ffff8880088f5b00 RBP: ffff8880088f5b00 R08: 0000000000080000 R09: 0000000000000001 R10: 0000000000000003 R11: 00000000000000001 R12: ffff8880056b6a00 R13: ffff8880088f5280 R14: 0000000000000001 R15: ffff8880088f5a80 FS: 0000000000000000(0000) GS:ffff88807dd80000(0000) knlGS:00000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0 : 0000000080050033 CR2: 0000000000000008 CR3: 0000000006314000 CR4: 00000000007506f0 PKRU: 55555554 Seguimiento de llamadas:  unix_release_sock (net/unix/af_unix.c:654) ix_release (net/unix/af_unix.c:1050) __sock_release (net/socket. c:660) sock_close (net/socket.c:1423) __fput (fs/file_table.c:423) retrasado_fput (fs/file_table.c:444 (discriminador 3)) Process_one_work (kernel/workqueue.c:3259) trabajador_thread ( kernel/workqueue.c:3329 kernel/workqueue.c:3416) kthread (kernel/kthread.c:388) ret_from_fork (arch/x86/kernel/process.c:153) ret_from_fork_asm (arch/x86/entry/entry_64.S :257)  M\u00f3dulos vinculados en: CR2: 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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/518a994aa0b87d96f1bc6678a7035df5d1fcd7a1\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/4bf6964451c3cb411fbaa1ae8b214b3d97a59bf1\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d59ae9314b97e01c76a4171472441e55721ba636\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/4708f49add84a57ce0ccc7bf9a6269845c631cc3\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/9841991a446c87f90f66f4b9fee6fe934c1336a2\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T03:43:50.584Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-36972\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-05T03:56:02.065864Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"4fe505c63aa3\", \"lessThan\": \"518a994aa0b8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e0e09186d882\", \"lessThan\": \"4bf6964451c3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b74aa9ce13d0\", \"lessThan\": \"d59ae9314b97\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1279f9d9dec2\", \"lessThan\": \"4708f49add84\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1279f9d9dec2\", \"lessThan\": \"9841991a446c\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:6.8:-:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.8\"}], \"defaultStatus\": \"affected\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-10T16:56:02.136Z\"}}], \"cna\": {\"title\": \"af_unix: Update unix_sk(sk)-\u003eoob_skb under sk_receive_queue lock.\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4fe505c63aa3273135a57597fda761e9aecc7668\", \"lessThan\": \"518a994aa0b87d96f1bc6678a7035df5d1fcd7a1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e0e09186d8821ad59806115d347ea32efa43ca4b\", \"lessThan\": \"4bf6964451c3cb411fbaa1ae8b214b3d97a59bf1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b74aa9ce13d02b7fd37c5325b99854f91b9b4276\", \"lessThan\": \"d59ae9314b97e01c76a4171472441e55721ba636\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1279f9d9dec2d7462823a18c29ad61359e0a007d\", \"lessThan\": \"4708f49add84a57ce0ccc7bf9a6269845c631cc3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1279f9d9dec2d7462823a18c29ad61359e0a007d\", \"lessThan\": \"9841991a446c87f90f66f4b9fee6fe934c1336a2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"82ae47c5c3a6b27fdc0f9e83c1499cb439c56140\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.15.149\", \"lessThan\": \"5.15.161\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.1.78\", \"lessThan\": \"6.1.93\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.6.17\", \"lessThan\": \"6.6.33\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.7.5\", \"lessThan\": \"6.8\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/unix/af_unix.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.8\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.161\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.93\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/unix/af_unix.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/518a994aa0b87d96f1bc6678a7035df5d1fcd7a1\"}, {\"url\": \"https://git.kernel.org/stable/c/4bf6964451c3cb411fbaa1ae8b214b3d97a59bf1\"}, {\"url\": \"https://git.kernel.org/stable/c/d59ae9314b97e01c76a4171472441e55721ba636\"}, {\"url\": \"https://git.kernel.org/stable/c/4708f49add84a57ce0ccc7bf9a6269845c631cc3\"}, {\"url\": \"https://git.kernel.org/stable/c/9841991a446c87f90f66f4b9fee6fe934c1336a2\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\naf_unix: Update unix_sk(sk)-\u003eoob_skb under sk_receive_queue lock.\\n\\nBilly Jheng Bing-Jhong reported a race between __unix_gc() and\\nqueue_oob().\\n\\n__unix_gc() tries to garbage-collect close()d inflight sockets,\\nand then if the socket has MSG_OOB in unix_sk(sk)-\u003eoob_skb, GC\\nwill drop the reference and set NULL to it locklessly.\\n\\nHowever, the peer socket still can send MSG_OOB message and\\nqueue_oob() can update unix_sk(sk)-\u003eoob_skb concurrently, leading\\nNULL pointer dereference. [0]\\n\\nTo fix the issue, let\u0027s update unix_sk(sk)-\u003eoob_skb under the\\nsk_receive_queue\u0027s lock and take it everywhere we touch oob_skb.\\n\\nNote that we defer kfree_skb() in manage_oob() to silence lockdep\\nfalse-positive (See [1]).\\n\\n[0]:\\nBUG: kernel NULL pointer dereference, address: 0000000000000008\\n PF: supervisor write access in kernel mode\\n PF: error_code(0x0002) - not-present page\\nPGD 8000000009f5e067 P4D 8000000009f5e067 PUD 9f5d067 PMD 0\\nOops: 0002 [#1] PREEMPT SMP PTI\\nCPU: 3 PID: 50 Comm: kworker/3:1 Not tainted 6.9.0-rc5-00191-gd091e579b864 #110\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\\nWorkqueue: events delayed_fput\\nRIP: 0010:skb_dequeue (./include/linux/skbuff.h:2386 ./include/linux/skbuff.h:2402 net/core/skbuff.c:3847)\\nCode: 39 e3 74 3e 8b 43 10 48 89 ef 83 e8 01 89 43 10 49 8b 44 24 08 49 c7 44 24 08 00 00 00 00 49 8b 14 24 49 c7 04 24 00 00 00 00 \u003c48\u003e 89 42 08 48 89 10 e8 e7 c5 42 00 4c 89 e0 5b 5d 41 5c c3 cc cc\\nRSP: 0018:ffffc900001bfd48 EFLAGS: 00000002\\nRAX: 0000000000000000 RBX: ffff8880088f5ae8 RCX: 00000000361289f9\\nRDX: 0000000000000000 RSI: 0000000000000206 RDI: ffff8880088f5b00\\nRBP: ffff8880088f5b00 R08: 0000000000080000 R09: 0000000000000001\\nR10: 0000000000000003 R11: 0000000000000001 R12: ffff8880056b6a00\\nR13: ffff8880088f5280 R14: 0000000000000001 R15: ffff8880088f5a80\\nFS:  0000000000000000(0000) GS:ffff88807dd80000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000000000008 CR3: 0000000006314000 CR4: 00000000007506f0\\nPKRU: 55555554\\nCall Trace:\\n \u003cTASK\u003e\\n unix_release_sock (net/unix/af_unix.c:654)\\n unix_release (net/unix/af_unix.c:1050)\\n __sock_release (net/socket.c:660)\\n sock_close (net/socket.c:1423)\\n __fput (fs/file_table.c:423)\\n delayed_fput (fs/file_table.c:444 (discriminator 3))\\n process_one_work (kernel/workqueue.c:3259)\\n worker_thread (kernel/workqueue.c:3329 kernel/workqueue.c:3416)\\n kthread (kernel/kthread.c:388)\\n ret_from_fork (arch/x86/kernel/process.c:153)\\n ret_from_fork_asm (arch/x86/entry/entry_64.S:257)\\n \u003c/TASK\u003e\\nModules linked in:\\nCR2: 0000000000000008\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.161\", \"versionStartIncluding\": \"5.15.149\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.93\", \"versionStartIncluding\": \"6.1.78\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.33\", \"versionStartIncluding\": \"6.6.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.4\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.7.5\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:48:09.167Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-36972\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:48:09.167Z\", \"dateReserved\": \"2024-05-30T15:25:07.082Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-10T14:57:42.271Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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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.