{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-47419","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-05-21T14:58:30.818Z","datePublished":"2024-05-21T15:04:07.992Z","dateUpdated":"2025-05-04T07:10:31.581Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:10:31.581Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_taprio: properly cancel timer from taprio_destroy()\n\nThere is a comment in qdisc_create() about us not calling ops->reset()\nin some cases.\n\nerr_out4:\n\t/*\n\t * Any broken qdiscs that would require a ops->reset() here?\n\t * The qdisc was never in action so it shouldn't be necessary.\n\t */\n\nAs taprio sets a timer before actually receiving a packet, we need\nto cancel it from ops->destroy, just in case ops->reset has not\nbeen called.\n\nsyzbot reported:\n\nODEBUG: free active (active state 0) object type: hrtimer hint: advance_sched+0x0/0x9a0 arch/x86/include/asm/atomic64_64.h:22\nWARNING: CPU: 0 PID: 8441 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505\nModules linked in:\nCPU: 0 PID: 8441 Comm: syz-executor813 Not tainted 5.14.0-rc6-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nRIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505\nCode: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd e0 d3 e3 89 4c 89 ee 48 c7 c7 e0 c7 e3 89 e8 5b 86 11 05 <0f> 0b 83 05 85 03 92 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3\nRSP: 0018:ffffc9000130f330 EFLAGS: 00010282\nRAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000\nRDX: ffff88802baeb880 RSI: ffffffff815d87b5 RDI: fffff52000261e58\nRBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\nR10: ffffffff815d25ee R11: 0000000000000000 R12: ffffffff898dd020\nR13: ffffffff89e3ce20 R14: ffffffff81653630 R15: dffffc0000000000\nFS:  0000000000f0d300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007ffb64b3e000 CR3: 0000000036557000 CR4: 00000000001506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n __debug_check_no_obj_freed lib/debugobjects.c:987 [inline]\n debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1018\n slab_free_hook mm/slub.c:1603 [inline]\n slab_free_freelist_hook+0x171/0x240 mm/slub.c:1653\n slab_free mm/slub.c:3213 [inline]\n kfree+0xe4/0x540 mm/slub.c:4267\n qdisc_create+0xbcf/0x1320 net/sched/sch_api.c:1299\n tc_modify_qdisc+0x4c8/0x1a60 net/sched/sch_api.c:1663\n rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571\n netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504\n netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340\n netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929\n sock_sendmsg_nosec net/socket.c:704 [inline]\n sock_sendmsg+0xcf/0x120 net/socket.c:724\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2403\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2457\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2486\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sched/sch_taprio.c"],"versions":[{"version":"c71c512f4a65267e6a18163f4df729c489a51035","lessThan":"c951c08a5996365aecbc5f1a9bddec3905e1ddfc","status":"affected","versionType":"git"},{"version":"a969a632cbe7165d448a5528806ad120c2599397","lessThan":"3ec73ffeef54596c32aff0e73fe60971b9c8b866","status":"affected","versionType":"git"},{"version":"44d4775ca51805b376a8db5b34f650434a08e556","lessThan":"7a1c1af341041221b3acb9d7036cc2b43e0efa75","status":"affected","versionType":"git"},{"version":"44d4775ca51805b376a8db5b34f650434a08e556","lessThan":"a56d447f196fa9973c568f54c0d76d5391c3b0c0","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/sched/sch_taprio.c"],"versions":[{"version":"5.11","status":"affected"},{"version":"0","lessThan":"5.11","status":"unaffected","versionType":"semver"},{"version":"5.4.153","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.73","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.14.12","lessThanOrEqual":"5.14.*","status":"unaffected","versionType":"semver"},{"version":"5.15","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":"5.4.87","versionEndExcluding":"5.4.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.5","versionEndExcluding":"5.10.73"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.14.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/c951c08a5996365aecbc5f1a9bddec3905e1ddfc"},{"url":"https://git.kernel.org/stable/c/3ec73ffeef54596c32aff0e73fe60971b9c8b866"},{"url":"https://git.kernel.org/stable/c/7a1c1af341041221b3acb9d7036cc2b43e0efa75"},{"url":"https://git.kernel.org/stable/c/a56d447f196fa9973c568f54c0d76d5391c3b0c0"}],"title":"net/sched: sch_taprio: properly cancel timer from taprio_destroy()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","lang":"en","description":"CWE-noinfo Not enough information"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-05-29T18:00:04.629892Z","id":"CVE-2021-47419","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-11-01T14:40:36.981Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:39:59.382Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/c951c08a5996365aecbc5f1a9bddec3905e1ddfc","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/3ec73ffeef54596c32aff0e73fe60971b9c8b866","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/7a1c1af341041221b3acb9d7036cc2b43e0efa75","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/a56d447f196fa9973c568f54c0d76d5391c3b0c0","tags":["x_transferred"]}]}]}}