{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-36972", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-30T15:25:07.082Z", "datePublished": "2024-06-10T14:57:42.271Z", "dateUpdated": "2026-05-23T15:48:09.167Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:48:09.167Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Update unix_sk(sk)->oob_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)->oob_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)->oob_skb concurrently, leading\nNULL pointer dereference. [0]\n\nTo fix the issue, let's update unix_sk(sk)->oob_skb under the\nsk_receive_queue's 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 <48> 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 \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 \nModules linked in:\nCR2: 0000000000000008" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/unix/af_unix.c" ], "versions": [ { "version": "4fe505c63aa3273135a57597fda761e9aecc7668", "lessThan": "518a994aa0b87d96f1bc6678a7035df5d1fcd7a1", "status": "affected", "versionType": "git" }, { "version": "e0e09186d8821ad59806115d347ea32efa43ca4b", "lessThan": "4bf6964451c3cb411fbaa1ae8b214b3d97a59bf1", "status": "affected", "versionType": "git" }, { "version": "b74aa9ce13d02b7fd37c5325b99854f91b9b4276", "lessThan": "d59ae9314b97e01c76a4171472441e55721ba636", "status": "affected", "versionType": "git" }, { "version": "1279f9d9dec2d7462823a18c29ad61359e0a007d", "lessThan": "4708f49add84a57ce0ccc7bf9a6269845c631cc3", "status": "affected", "versionType": "git" }, { "version": "1279f9d9dec2d7462823a18c29ad61359e0a007d", "lessThan": "9841991a446c87f90f66f4b9fee6fe934c1336a2", "status": "affected", "versionType": "git" }, { "version": "82ae47c5c3a6b27fdc0f9e83c1499cb439c56140", "status": "affected", "versionType": "git" }, { "version": "5.15.149", "lessThan": "5.15.161", "status": "affected", "versionType": "semver" }, { "version": "6.1.78", "lessThan": "6.1.93", "status": "affected", "versionType": "semver" }, { "version": "6.6.17", "lessThan": "6.6.33", "status": "affected", "versionType": "semver" }, { "version": "6.7.5", "lessThan": "6.8", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/unix/af_unix.c" ], "versions": [ { "version": "6.8", "status": "affected" }, { "version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.161", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.93", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.33", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.4", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.149", "versionEndExcluding": "5.15.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.78", "versionEndExcluding": "6.1.93" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.17", "versionEndExcluding": "6.6.33" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.9.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7.5" } ] } ] } ], "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" } ], "title": "af_unix: Update unix_sk(sk)->oob_skb under sk_receive_queue lock.", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-476", "lang": "en", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "affected": [ { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" ], "defaultStatus": "unaffected", "versions": [ { "version": "4fe505c63aa3", "status": "affected", "lessThan": "518a994aa0b8", "versionType": "git" }, { "version": "e0e09186d882", "status": "affected", "lessThan": "4bf6964451c3", "versionType": "git" }, { "version": "b74aa9ce13d0", "status": "affected", "lessThan": "d59ae9314b97", "versionType": "custom" }, { "version": "1279f9d9dec2", "status": "affected", "lessThan": "4708f49add84", "versionType": "custom" }, { "version": "1279f9d9dec2", "status": "affected", "lessThan": "9841991a446c", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:6.8:-:*:*:*:*:*:*" ], "defaultStatus": "affected", "versions": [ { "version": "6.8", "status": "affected" } ] } ], "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": { "timestamp": "2024-09-05T03:56:02.065864Z", "id": "CVE-2024-36972", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-05T15:34:54.248Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:43:50.584Z" }, "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" ] } ] } ] } }