{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-50531", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50531", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2025-10-07T15:19:21.911Z", "updatedAt": "2026-05-11T19:21:13.642Z", "importedAt": "2026-10-24T01:56:49.724Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "tipc: fix an information leak in tipc_topsrv_kern_subscr", "summary": "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": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "026321c6d056a54b4145522492245d2b5913ee1d", "status": "affected", "versionType": "git", "lessThan": "3d1b83ff7b6575a4e41283203e6b2e25ea700cd7" }, { "version": "026321c6d056a54b4145522492245d2b5913ee1d", "status": "affected", "versionType": "git", "lessThan": "567f8de358b61015dcfb8878a1f06c5369a45f54" }, { "version": "026321c6d056a54b4145522492245d2b5913ee1d", "status": "affected", "versionType": "git", "lessThan": "e558e148938442dd49628cd7ef61c360832bef31" }, { "version": "026321c6d056a54b4145522492245d2b5913ee1d", "status": "affected", "versionType": "git", "lessThan": "dbc01c0a4e202a7e925dad1d4b7c1d6eb0c81154" }, { "version": "026321c6d056a54b4145522492245d2b5913ee1d", "status": "affected", "versionType": "git", "lessThan": "fef70f978bc289642501d88d2a3f5e841bd31a67" }, { "version": "026321c6d056a54b4145522492245d2b5913ee1d", "status": "affected", "versionType": "git", "lessThan": "777ecaabd614d47c482a5c9031579e66da13989a" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.17", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.17" }, { "version": "4.19.264", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.221", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.152", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.76", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.0.6", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.0.*" }, { "version": "6.1", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }