{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50291", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-15T14:18:36.811Z", "datePublished": "2025-09-15T14:45:47.510Z", "dateUpdated": "2026-05-11T19:16:28.446Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:16:28.446Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: annotate data-races around kcm->rx_psock\n\nkcm->rx_psock can be read locklessly in kcm_rfree().\nAnnotate the read and writes accordingly.\n\nWe do the same for kcm->rx_wait in the following patch.\n\nsyzbot reported:\nBUG: KCSAN: data-race in kcm_rfree / unreserve_rx_kcm\n\nwrite to 0xffff888123d827b8 of 8 bytes by task 2758 on cpu 1:\nunreserve_rx_kcm+0x72/0x1f0 net/kcm/kcmsock.c:313\nkcm_rcv_strparser+0x2b5/0x3a0 net/kcm/kcmsock.c:373\n__strp_recv+0x64c/0xd20 net/strparser/strparser.c:301\nstrp_recv+0x6d/0x80 net/strparser/strparser.c:335\ntcp_read_sock+0x13e/0x5a0 net/ipv4/tcp.c:1703\nstrp_read_sock net/strparser/strparser.c:358 [inline]\ndo_strp_work net/strparser/strparser.c:406 [inline]\nstrp_work+0xe8/0x180 net/strparser/strparser.c:415\nprocess_one_work+0x3d3/0x720 kernel/workqueue.c:2289\nworker_thread+0x618/0xa70 kernel/workqueue.c:2436\nkthread+0x1a9/0x1e0 kernel/kthread.c:376\nret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n\nread to 0xffff888123d827b8 of 8 bytes by task 5859 on cpu 0:\nkcm_rfree+0x14c/0x220 net/kcm/kcmsock.c:181\nskb_release_head_state+0x8e/0x160 net/core/skbuff.c:841\nskb_release_all net/core/skbuff.c:852 [inline]\n__kfree_skb net/core/skbuff.c:868 [inline]\nkfree_skb_reason+0x5c/0x260 net/core/skbuff.c:891\nkfree_skb include/linux/skbuff.h:1216 [inline]\nkcm_recvmsg+0x226/0x2b0 net/kcm/kcmsock.c:1161\n____sys_recvmsg+0x16c/0x2e0\n___sys_recvmsg net/socket.c:2743 [inline]\ndo_recvmmsg+0x2f1/0x710 net/socket.c:2837\n__sys_recvmmsg net/socket.c:2916 [inline]\n__do_sys_recvmmsg net/socket.c:2939 [inline]\n__se_sys_recvmmsg net/socket.c:2932 [inline]\n__x64_sys_recvmmsg+0xde/0x160 net/socket.c:2932\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0xffff88812971ce00 -> 0x0000000000000000\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 0 PID: 5859 Comm: syz-executor.3 Not tainted 6.0.0-syzkaller-12189-g19d17ab7c68b-dirty #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/kcm/kcmsock.c" ], "versions": [ { "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "13dba69e18d04c8eec7596369f2a0596b0260275", "status": "affected", "versionType": "git" }, { "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "bf46af730e58d340f6f740bc69a07c5f6b85c655", "status": "affected", "versionType": "git" }, { "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "1b8a5692ab25db4ef1c2cc8e5d21f7a65dc3d079", "status": "affected", "versionType": "git" }, { "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "e94395e916b48a5b912a0a04570981b5b091acb0", "status": "affected", "versionType": "git" }, { "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "c325f92d8d9b223d5842609ca067e898e9d34566", "status": "affected", "versionType": "git" }, { "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "342d918cf9a45df9cf11bbe7162b851adefd178f", "status": "affected", "versionType": "git" }, { "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "12a0eb340c9a22e0f8c00d2c0c1a60695ead926a", "status": "affected", "versionType": "git" }, { "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3", "lessThan": "15e4dabda11b0fa31d510a915d1a580f47dfc92e", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/kcm/kcmsock.c" ], "versions": [ { "version": "4.6", "status": "affected" }, { "version": "0", "lessThan": "4.6", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.332", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.298", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.264", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.223", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.153", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.77", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.7", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1", "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": "4.6", "versionEndExcluding": "4.9.332" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "4.14.298" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "4.19.264" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "5.4.223" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "5.10.153" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "5.15.77" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.0.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/13dba69e18d04c8eec7596369f2a0596b0260275" }, { "url": "https://git.kernel.org/stable/c/bf46af730e58d340f6f740bc69a07c5f6b85c655" }, { "url": "https://git.kernel.org/stable/c/1b8a5692ab25db4ef1c2cc8e5d21f7a65dc3d079" }, { "url": "https://git.kernel.org/stable/c/e94395e916b48a5b912a0a04570981b5b091acb0" }, { "url": "https://git.kernel.org/stable/c/c325f92d8d9b223d5842609ca067e898e9d34566" }, { "url": "https://git.kernel.org/stable/c/342d918cf9a45df9cf11bbe7162b851adefd178f" }, { "url": "https://git.kernel.org/stable/c/12a0eb340c9a22e0f8c00d2c0c1a60695ead926a" }, { "url": "https://git.kernel.org/stable/c/15e4dabda11b0fa31d510a915d1a580f47dfc92e" } ], "title": "kcm: annotate data-races around kcm->rx_psock", "x_generator": { "engine": "bippy-1.2.0" } } } }