CVE-2022-50531

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-50531", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-07T15:15:38.664Z", "datePublished": "2025-10-07T15:19:21.911Z", "dateUpdated": "2026-05-11T19:21:13.642Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:21:13.642Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix an information leak in tipc_topsrv_kern_subscr\n\nUse a 8-byte write to initialize sub.usr_handle in\ntipc_topsrv_kern_subscr(), otherwise four bytes remain uninitialized\nwhen issuing setsockopt(..., SOL_TIPC, ...).\nThis resulted in an infoleak reported by KMSAN when the packet was\nreceived:\n\n =====================================================\n BUG: KMSAN: kernel-infoleak in copyout+0xbc/0x100 lib/iov_iter.c:169\n instrument_copy_to_user ./include/linux/instrumented.h:121\n copyout+0xbc/0x100 lib/iov_iter.c:169\n _copy_to_iter+0x5c0/0x20a0 lib/iov_iter.c:527\n copy_to_iter ./include/linux/uio.h:176\n simple_copy_to_iter+0x64/0xa0 net/core/datagram.c:513\n __skb_datagram_iter+0x123/0xdc0 net/core/datagram.c:419\n skb_copy_datagram_iter+0x58/0x200 net/core/datagram.c:527\n skb_copy_datagram_msg ./include/linux/skbuff.h:3903\n packet_recvmsg+0x521/0x1e70 net/packet/af_packet.c:3469\n ____sys_recvmsg+0x2c4/0x810 net/socket.c:?\n ___sys_recvmsg+0x217/0x840 net/socket.c:2743\n __sys_recvmsg net/socket.c:2773\n __do_sys_recvmsg net/socket.c:2783\n __se_sys_recvmsg net/socket.c:2780\n __x64_sys_recvmsg+0x364/0x540 net/socket.c:2780\n do_syscall_x64 arch/x86/entry/common.c:50\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd arch/x86/entry/entry_64.S:120\n\n ...\n\n Uninit was stored to memory at:\n tipc_sub_subscribe+0x42d/0xb50 net/tipc/subscr.c:156\n tipc_conn_rcv_sub+0x246/0x620 net/tipc/topsrv.c:375\n tipc_topsrv_kern_subscr+0x2e8/0x400 net/tipc/topsrv.c:579\n tipc_group_create+0x4e7/0x7d0 net/tipc/group.c:190\n tipc_sk_join+0x2a8/0x770 net/tipc/socket.c:3084\n tipc_setsockopt+0xae5/0xe40 net/tipc/socket.c:3201\n __sys_setsockopt+0x87f/0xdc0 net/socket.c:2252\n __do_sys_setsockopt net/socket.c:2263\n __se_sys_setsockopt net/socket.c:2260\n __x64_sys_setsockopt+0xe0/0x160 net/socket.c:2260\n do_syscall_x64 arch/x86/entry/common.c:50\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd arch/x86/entry/entry_64.S:120\n\n Local variable sub created at:\n tipc_topsrv_kern_subscr+0x57/0x400 net/tipc/topsrv.c:562\n tipc_group_create+0x4e7/0x7d0 net/tipc/group.c:190\n\n Bytes 84-87 of 88 are uninitialized\n Memory access of size 88 starts at ffff88801ed57cd0\n Data copied to user address 0000000020000400\n ...\n ====================================================="}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/tipc/topsrv.c"], "versions": [{"version": "026321c6d056a54b4145522492245d2b5913ee1d", "lessThan": "3d1b83ff7b6575a4e41283203e6b2e25ea700cd7", "status": "affected", "versionType": "git"}, {"version": "026321c6d056a54b4145522492245d2b5913ee1d", "lessThan": "567f8de358b61015dcfb8878a1f06c5369a45f54", "status": "affected", "versionType": "git"}, {"version": "026321c6d056a54b4145522492245d2b5913ee1d", "lessThan": "e558e148938442dd49628cd7ef61c360832bef31", "status": "affected", "versionType": "git"}, {"version": "026321c6d056a54b4145522492245d2b5913ee1d", "lessThan": "dbc01c0a4e202a7e925dad1d4b7c1d6eb0c81154", "status": "affected", "versionType": "git"}, {"version": "026321c6d056a54b4145522492245d2b5913ee1d", "lessThan": "fef70f978bc289642501d88d2a3f5e841bd31a67", "status": "affected", "versionType": "git"}, {"version": "026321c6d056a54b4145522492245d2b5913ee1d", "lessThan": "777ecaabd614d47c482a5c9031579e66da13989a", "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/tipc/topsrv.c"], "versions": [{"version": "4.17", "status": "affected"}, {"version": "0", "lessThan": "4.17", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.264", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.221", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.152", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.76", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.6", "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": "4.17", "versionEndExcluding": "4.19.264"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "5.4.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "5.10.152"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "5.15.76"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.0.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3d1b83ff7b6575a4e41283203e6b2e25ea700cd7"}, {"url": "https://git.kernel.org/stable/c/567f8de358b61015dcfb8878a1f06c5369a45f54"}, {"url": "https://git.kernel.org/stable/c/e558e148938442dd49628cd7ef61c360832bef31"}, {"url": "https://git.kernel.org/stable/c/dbc01c0a4e202a7e925dad1d4b7c1d6eb0c81154"}, {"url": "https://git.kernel.org/stable/c/fef70f978bc289642501d88d2a3f5e841bd31a67"}, {"url": "https://git.kernel.org/stable/c/777ecaabd614d47c482a5c9031579e66da13989a"}], "title": "tipc: fix an information leak in tipc_topsrv_kern_subscr", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/tipc/topsrv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3d1b83ff7b6575a4e41283203e6b2e25ea700cd7", "status": "affected", "version": "026321c6d056a54b4145522492245d2b5913ee1d", "versionType": "git"}, {"lessThan": "567f8de358b61015dcfb8878a1f06c5369a45f54", "status": "affected", "version": "026321c6d056a54b4145522492245d2b5913ee1d", "versionType": "git"}, {"lessThan": "e558e148938442dd49628cd7ef61c360832bef31", "status": "affected", "version": "026321c6d056a54b4145522492245d2b5913ee1d", "versionType": "git"}, {"lessThan": "dbc01c0a4e202a7e925dad1d4b7c1d6eb0c81154", "status": "affected", "version": "026321c6d056a54b4145522492245d2b5913ee1d", "versionType": "git"}, {"lessThan": "fef70f978bc289642501d88d2a3f5e841bd31a67", "status": "affected", "version": "026321c6d056a54b4145522492245d2b5913ee1d", "versionType": "git"}, {"lessThan": "777ecaabd614d47c482a5c9031579e66da13989a", "status": "affected", "version": "026321c6d056a54b4145522492245d2b5913ee1d", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/tipc/topsrv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.17"}, {"lessThan": "4.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.264", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.221", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.152", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.76", "versionType": "semver"}, {"lessThanOrEqual": "6.0.*", "status": "unaffected", "version": "6.0.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "09C4D37C-A518-40EC-BBAC-23AE3A97FF35", "versionEndExcluding": "4.19.264", "versionStartIncluding": "4.17", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "DF527781-6E98-4DBF-B668-377AA673CDCF", "versionEndExcluding": "5.4.221", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AFE2A429-A1A8-4B68-8F1D-A1595AB6A4F7", "versionEndExcluding": "5.10.152", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "918A4953-6F82-40F5-B7A9-9836905139C1", "versionEndExcluding": "5.15.76", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "98F5FA4A-A33F-4FAD-894E-FDC9D295742A", "versionEndExcluding": "6.0.6", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix an information leak in tipc_topsrv_kern_subscr\n\nUse a 8-byte write to initialize sub.usr_handle in\ntipc_topsrv_kern_subscr(), otherwise four bytes remain uninitialized\nwhen issuing setsockopt(..., SOL_TIPC, ...).\nThis resulted in an infoleak reported by KMSAN when the packet was\nreceived:\n\n =====================================================\n BUG: KMSAN: kernel-infoleak in copyout+0xbc/0x100 lib/iov_iter.c:169\n instrument_copy_to_user ./include/linux/instrumented.h:121\n copyout+0xbc/0x100 lib/iov_iter.c:169\n _copy_to_iter+0x5c0/0x20a0 lib/iov_iter.c:527\n copy_to_iter ./include/linux/uio.h:176\n simple_copy_to_iter+0x64/0xa0 net/core/datagram.c:513\n __skb_datagram_iter+0x123/0xdc0 net/core/datagram.c:419\n skb_copy_datagram_iter+0x58/0x200 net/core/datagram.c:527\n skb_copy_datagram_msg ./include/linux/skbuff.h:3903\n packet_recvmsg+0x521/0x1e70 net/packet/af_packet.c:3469\n ____sys_recvmsg+0x2c4/0x810 net/socket.c:?\n ___sys_recvmsg+0x217/0x840 net/socket.c:2743\n __sys_recvmsg net/socket.c:2773\n __do_sys_recvmsg net/socket.c:2783\n __se_sys_recvmsg net/socket.c:2780\n __x64_sys_recvmsg+0x364/0x540 net/socket.c:2780\n do_syscall_x64 arch/x86/entry/common.c:50\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd arch/x86/entry/entry_64.S:120\n\n ...\n\n Uninit was stored to memory at:\n tipc_sub_subscribe+0x42d/0xb50 net/tipc/subscr.c:156\n tipc_conn_rcv_sub+0x246/0x620 net/tipc/topsrv.c:375\n tipc_topsrv_kern_subscr+0x2e8/0x400 net/tipc/topsrv.c:579\n tipc_group_create+0x4e7/0x7d0 net/tipc/group.c:190\n tipc_sk_join+0x2a8/0x770 net/tipc/socket.c:3084\n tipc_setsockopt+0xae5/0xe40 net/tipc/socket.c:3201\n __sys_setsockopt+0x87f/0xdc0 net/socket.c:2252\n __do_sys_setsockopt net/socket.c:2263\n __se_sys_setsockopt net/socket.c:2260\n __x64_sys_setsockopt+0xe0/0x160 net/socket.c:2260\n do_syscall_x64 arch/x86/entry/common.c:50\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd arch/x86/entry/entry_64.S:120\n\n Local variable sub created at:\n tipc_topsrv_kern_subscr+0x57/0x400 net/tipc/topsrv.c:562\n tipc_group_create+0x4e7/0x7d0 net/tipc/group.c:190\n\n Bytes 84-87 of 88 are uninitialized\n Memory access of size 88 starts at ffff88801ed57cd0\n Data copied to user address 0000000020000400\n ...\n ====================================================="}], "id": "CVE-2022-50531", "lastModified": "2026-06-17T05:23:44.140", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-10-07T16:15:37.143", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3d1b83ff7b6575a4e41283203e6b2e25ea700cd7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/567f8de358b61015dcfb8878a1f06c5369a45f54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/777ecaabd614d47c482a5c9031579e66da13989a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dbc01c0a4e202a7e925dad1d4b7c1d6eb0c81154"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e558e148938442dd49628cd7ef61c360832bef31"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fef70f978bc289642501d88d2a3f5e841bd31a67"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: tipc: fix an information leak in tipc_topsrv_kern_subscr", "id": "2402274", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402274"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2022-50531", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50531\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50531\nhttps://lore.kernel.org/linux-cve-announce/2025100707-CVE-2022-50531-a29b@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-10-08T13:36:37.488900+00:00", "updated": "2025-10-08T13:36:37.488926+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}