{ "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-2025-21692", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-21692", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-02-10T15:58:48.087Z", "updatedAt": "2026-10-15T01:03:11.643Z", "importedAt": "2026-10-24T01:57:29.455Z", "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": "net: sched: fix ets qdisc OOB Indexing", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: fix ets qdisc OOB Indexing\n\nHaowei Yan found that ets_class_from_arg() can\nindex an Out-Of-Bound class in ets_class_from_arg() when passed clid of\n0. The overflow may cause local privilege escalation.\n\n [ 18.852298] ------------[ cut here ]------------\n [ 18.853271] UBSAN: array-index-out-of-bounds in net/sched/sch_ets.c:93:20\n [ 18.853743] index 18446744073709551615 is out of range for type 'ets_class [16]'\n [ 18.854254] CPU: 0 UID: 0 PID: 1275 Comm: poc Not tainted 6.12.6-dirty #17\n [ 18.854821] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n [ 18.856532] Call Trace:\n [ 18.857441] \n [ 18.858227] dump_stack_lvl+0xc2/0xf0\n [ 18.859607] dump_stack+0x10/0x20\n [ 18.860908] __ubsan_handle_out_of_bounds+0xa7/0xf0\n [ 18.864022] ets_class_change+0x3d6/0x3f0\n [ 18.864322] tc_ctl_tclass+0x251/0x910\n [ 18.864587] ? lock_acquire+0x5e/0x140\n [ 18.865113] ? __mutex_lock+0x9c/0xe70\n [ 18.866009] ? __mutex_lock+0xa34/0xe70\n [ 18.866401] rtnetlink_rcv_msg+0x170/0x6f0\n [ 18.866806] ? __lock_acquire+0x578/0xc10\n [ 18.867184] ? __pfx_rtnetlink_rcv_msg+0x10/0x10\n [ 18.867503] netlink_rcv_skb+0x59/0x110\n [ 18.867776] rtnetlink_rcv+0x15/0x30\n [ 18.868159] netlink_unicast+0x1c3/0x2b0\n [ 18.868440] netlink_sendmsg+0x239/0x4b0\n [ 18.868721] ____sys_sendmsg+0x3e2/0x410\n [ 18.869012] ___sys_sendmsg+0x88/0xe0\n [ 18.869276] ? rseq_ip_fixup+0x198/0x260\n [ 18.869563] ? rseq_update_cpu_node_id+0x10a/0x190\n [ 18.869900] ? trace_hardirqs_off+0x5a/0xd0\n [ 18.870196] ? syscall_exit_to_user_mode+0xcc/0x220\n [ 18.870547] ? do_syscall_64+0x93/0x150\n [ 18.870821] ? __memcg_slab_free_hook+0x69/0x290\n [ 18.871157] __sys_sendmsg+0x69/0xd0\n [ 18.871416] __x64_sys_sendmsg+0x1d/0x30\n [ 18.871699] x64_sys_call+0x9e2/0x2670\n [ 18.871979] do_syscall_64+0x87/0x150\n [ 18.873280] ? do_syscall_64+0x93/0x150\n [ 18.874742] ? lock_release+0x7b/0x160\n [ 18.876157] ? do_user_addr_fault+0x5ce/0x8f0\n [ 18.877833] ? irqentry_exit_to_user_mode+0xc2/0x210\n [ 18.879608] ? irqentry_exit+0x77/0xb0\n [ 18.879808] ? clear_bhb_loop+0x15/0x70\n [ 18.880023] ? clear_bhb_loop+0x15/0x70\n [ 18.880223] ? clear_bhb_loop+0x15/0x70\n [ 18.880426] entry_SYSCALL_64_after_hwframe+0x76/0x7e\n [ 18.880683] RIP: 0033:0x44a957\n [ 18.880851] Code: ff ff e8 fc 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 8974 24 10\n [ 18.881766] RSP: 002b:00007ffcdd00fad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\n [ 18.882149] RAX: ffffffffffffffda RBX: 00007ffcdd010db8 RCX: 000000000044a957\n [ 18.882507] RDX: 0000000000000000 RSI: 00007ffcdd00fb70 RDI: 0000000000000003\n [ 18.885037] RBP: 00007ffcdd010bc0 R08: 000000000703c770 R09: 000000000703c7c0\n [ 18.887203] R10: 0000000000000080 R11: 0000000000000246 R12: 0000000000000001\n [ 18.888026] R13: 00007ffcdd010da8 R14: 00000000004ca7d0 R15: 0000000000000001\n [ 18.888395] \n [ 18.888610] ---[ end trace ]---", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33", "status": "affected", "versionType": "git", "lessThan": "03c56665dab1f4ac844bc156652d50d639093fa5" }, { "version": "dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33", "status": "affected", "versionType": "git", "lessThan": "bcf0d815e728a3a304b50455b32a3170c16e1eaa" }, { "version": "dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33", "status": "affected", "versionType": "git", "lessThan": "1332c6ed446be787f901ed1064ec6a3c694f028a" }, { "version": "dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33", "status": "affected", "versionType": "git", "lessThan": "f4168299e553f17aa2ba4016e77a9c38da40eb1d" }, { "version": "dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33", "status": "affected", "versionType": "git", "lessThan": "997f6ec4208b23c87daf9f044689685f091826f7" }, { "version": "dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33", "status": "affected", "versionType": "git", "lessThan": "f6b0f05fbfa4044f890e8a348288c0d9a20bd1d0" }, { "version": "dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33", "status": "affected", "versionType": "git", "lessThan": "d62b04fca4340a0d468d7853bd66e511935a18cb" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.6", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.6" }, { "version": "5.10.234", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.178", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.128", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.75", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.12", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13.1", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.13.*" }, { "version": "6.14", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }