CVE-2026-80630 - Vulnerability Details

Vendors	Products
Linux Subscribe	Linux Kernel Subscribe

Vendors	Products
Linux Subscribe	Linux Kernel Subscribe

Link	Providers
https://git.kernel.org/stable/c/0500af8630c3253f0dde879bd3a73a06bb2f2b3f
https://git.kernel.org/stable/c/097f6fc7b1ae362dd7a9444b2572162fda73b284
https://git.kernel.org/stable/c/20dd591d8f951e1e6aca5052be8785e6181055e2
https://git.kernel.org/stable/c/3e515188393e62a718ccebee651ee74514104ff6
https://git.kernel.org/stable/c/7c09843fd2b44d9bf0de798683861d1aecd62a08
https://git.kernel.org/stable/c/94a5f1efdefb01f82cd228bf4e7ef1e8fc075c80
https://git.kernel.org/stable/c/acc08a0c7f37ebb1901144e03a7cba7d4afd9203
https://git.kernel.org/stable/c/af54df2f44d9605614bc7ed96640302a240a9a62

Type	Values Removed	Values Added
Weaknesses		CWE-416

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen Whenever fq_codel drops packets during peek, it calls qdisc_tree_reduce_backlog. An issue arises because it calls qdisc_tree_reduce_backlog before it reincrements the qlen. If qlen drops to zero, but peek returns an skb, the parent's qlen_notify callback will be executed even though fq_codel still has 1 packet on the queue and, thus, will mistakenly deactivate the parent's class causing issues like a recent report [1] and a wild memory access in qfq: [ 29.371146][ T360] Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] SMP KASAN NOPTI [ 29.371666][ T360] KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127] [ 29.371987][ T360] CPU: 6 UID: 0 PID: 360 Comm: tc Not tainted 7.1.0-rc5-00285-gc530e5b2dbc6-dirty #82 PREEMPT(full) [ 29.372384][ T360] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 29.372620][ T360] RIP: 0010:qfq_deactivate_agg (include/linux/list.h:1029 (discriminator 2) include/linux/list.h:1043 (discriminator 2) net/sched/sch_qfq.c:1369 (discriminator 2) net/sched/sch_qfq.c:1395 (discriminator 2)) sch_qfq [ 29.373544][ T360] RSP: 0018:ffff888102417370 EFLAGS: 00010216 [ 29.373800][ T360] RAX: 0000000000000000 RBX: ffff88811224d568 RCX: dffffc0000000000 [ 29.374079][ T360] RDX: 1ffff11021fe1543 RSI: ffff88810ff0aa00 RDI: dffffc0000000000 [ 29.374368][ T360] RBP: ffff88811224c280 R08: dead000000000122 R09: 1bd5a00000000024 [ 29.374649][ T360] R10: fffffbfff7940329 R11: fffffbfff7940329 R12: 0000000000000000 [ 29.374926][ T360] R13: dead000000000100 R14: ffff88811224d580 R15: ffff88811224d578 [ 29.375207][ T360] FS: 00007f5b794e5780(0000) GS:ffff88815d1e9000(0000) knlGS:0000000000000000 [ 29.375545][ T360] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.375823][ T360] CR2: 000055ffb091f000 CR3: 000000010a305000 CR4: 0000000000750ef0 [ 29.376103][ T360] PKRU: 55555554 [ 29.376258][ T360] Call Trace: [ 29.376401][ T360] <TASK> ... [ 29.376885][ T360] qfq_reset_qdisc (net/sched/sch_qfq.c:357 net/sched/sch_qfq.c:1487) sch_qfq [ 29.377074][ T360] qdisc_reset (net/sched/sch_generic.c:1057) [ 29.377414][ T360] __qdisc_destroy (net/sched/sch_generic.c:1096) [ 29.377600][ T360] qdisc_graft (net/sched/sch_api.c:1062 net/sched/sch_api.c:1053 net/sched/sch_api.c:1159) [ 29.378593][ T360] tc_get_qdisc (net/sched/sch_api.c:1528 net/sched/sch_api.c:1556) Fix this by only calling qdisc_tree_reduce_backlog in peek after the qlen is restored. [1] http://lore.kernel.org/netdev/CAN2cbVe79oj0O9==m4+4x3v+O+qzRagA=2=wkrp9i9=CqYvyZA@mail.gmail.com/
Title		net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/0500af8630c3253f0dde879bd3a73a06bb2f2b3f https://git.kernel.org/stable/c/097f6fc7b1ae362dd7a9444b2572162fda73b284 https://git.kernel.org/stable/c/20dd591d8f951e1e6aca5052be8785e6181055e2 https://git.kernel.org/stable/c/3e515188393e62a718ccebee651ee74514104ff6 https://git.kernel.org/stable/c/7c09843fd2b44d9bf0de798683861d1aecd62a08 https://git.kernel.org/stable/c/94a5f1efdefb01f82cd228bf4e7ef1e8fc075c80 https://git.kernel.org/stable/c/acc08a0c7f37ebb1901144e03a7cba7d4afd9203 https://git.kernel.org/stable/c/af54df2f44d9605614bc7ed96640302a240a9a62

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80630", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.776Z", "datePublished": "2026-08-28T06:48:46.569Z", "dateUpdated": "2026-08-28T06:48:46.569Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-28T06:48:46.569Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen\n\nWhenever fq_codel drops packets during peek, it calls\nqdisc_tree_reduce_backlog. An issue arises because it calls\nqdisc_tree_reduce_backlog before it reincrements the qlen. If qlen drops\nto zero, but peek returns an skb, the parent's qlen_notify callback will be\nexecuted even though fq_codel still has 1 packet on the queue and, thus,\nwill mistakenly deactivate the parent's class causing issues like a recent\nreport [1] and a wild memory access in qfq:\n\n[ 29.371146][ T360] Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] SMP KASAN NOPTI\n[ 29.371666][ T360] KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127]\n[ 29.371987][ T360] CPU: 6 UID: 0 PID: 360 Comm: tc Not tainted 7.1.0-rc5-00285-gc530e5b2dbc6-dirty #82 PREEMPT(full)\n[ 29.372384][ T360] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\n[ 29.372620][ T360] RIP: 0010:qfq_deactivate_agg (include/linux/list.h:1029 (discriminator 2) include/linux/list.h:1043 (discriminator 2) net/sched/sch_qfq.c:1369 (discriminator 2) net/sched/sch_qfq.c:1395 (discriminator 2)) sch_qfq\n[ 29.373544][ T360] RSP: 0018:ffff888102417370 EFLAGS: 00010216\n[ 29.373800][ T360] RAX: 0000000000000000 RBX: ffff88811224d568 RCX: dffffc0000000000\n[ 29.374079][ T360] RDX: 1ffff11021fe1543 RSI: ffff88810ff0aa00 RDI: dffffc0000000000\n[ 29.374368][ T360] RBP: ffff88811224c280 R08: dead000000000122 R09: 1bd5a00000000024\n[ 29.374649][ T360] R10: fffffbfff7940329 R11: fffffbfff7940329 R12: 0000000000000000\n[ 29.374926][ T360] R13: dead000000000100 R14: ffff88811224d580 R15: ffff88811224d578\n[ 29.375207][ T360] FS: 00007f5b794e5780(0000) GS:ffff88815d1e9000(0000) knlGS:0000000000000000\n[ 29.375545][ T360] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 29.375823][ T360] CR2: 000055ffb091f000 CR3: 000000010a305000 CR4: 0000000000750ef0\n[ 29.376103][ T360] PKRU: 55555554\n[ 29.376258][ T360] Call Trace:\n[ 29.376401][ T360] <TASK>\n...\n[ 29.376885][ T360] qfq_reset_qdisc (net/sched/sch_qfq.c:357 net/sched/sch_qfq.c:1487) sch_qfq\n[ 29.377074][ T360] qdisc_reset (net/sched/sch_generic.c:1057)\n[ 29.377414][ T360] __qdisc_destroy (net/sched/sch_generic.c:1096)\n[ 29.377600][ T360] qdisc_graft (net/sched/sch_api.c:1062 net/sched/sch_api.c:1053 net/sched/sch_api.c:1159)\n[ 29.378593][ T360] tc_get_qdisc (net/sched/sch_api.c:1528 net/sched/sch_api.c:1556)\n\nFix this by only calling qdisc_tree_reduce_backlog in peek after the\nqlen is restored.\n\n[1] http://lore.kernel.org/netdev/CAN2cbVe79oj0O9==m4+4x3v+O+qzRagA=2=wkrp9i9=CqYvyZA@mail.gmail.com/"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/sch_fq_codel.c"], "versions": [{"version": "cc71a757da78dd4aa1b4a9b19cb011833730ccf2", "lessThan": "3e515188393e62a718ccebee651ee74514104ff6", "status": "affected", "versionType": "git"}, {"version": "eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450", "lessThan": "20dd591d8f951e1e6aca5052be8785e6181055e2", "status": "affected", "versionType": "git"}, {"version": "829c49b6b2ff45b043739168fd1245e4e1a91a30", "lessThan": "94a5f1efdefb01f82cd228bf4e7ef1e8fc075c80", "status": "affected", "versionType": "git"}, {"version": "2f9761a94bae33d26e6a81b31b36e7d776d93dc1", "lessThan": "acc08a0c7f37ebb1901144e03a7cba7d4afd9203", "status": "affected", "versionType": "git"}, {"version": "4d55144b12e742404bb3f8fee6038bafbf45619d", "lessThan": "7c09843fd2b44d9bf0de798683861d1aecd62a08", "status": "affected", "versionType": "git"}, {"version": "342debc12183b51773b3345ba267e9263bdfaaef", "lessThan": "0500af8630c3253f0dde879bd3a73a06bb2f2b3f", "status": "affected", "versionType": "git"}, {"version": "342debc12183b51773b3345ba267e9263bdfaaef", "lessThan": "af54df2f44d9605614bc7ed96640302a240a9a62", "status": "affected", "versionType": "git"}, {"version": "342debc12183b51773b3345ba267e9263bdfaaef", "lessThan": "097f6fc7b1ae362dd7a9444b2572162fda73b284", "status": "affected", "versionType": "git"}, {"version": "7a742a9506849d1c1aa71e36c89855ceddc7d58e", "status": "affected", "versionType": "git"}, {"version": "e73c838c80dccb9e4f19becc11d9f3cb4a27d483", "status": "affected", "versionType": "git"}, {"version": "a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31", "status": "affected", "versionType": "git"}, {"version": "5.10.241", "lessThan": "5.10.261", "status": "affected", "versionType": "semver"}, {"version": "5.15.190", "lessThan": "5.15.212", "status": "affected", "versionType": "semver"}, {"version": "6.1.135", "lessThan": "6.1.178", "status": "affected", "versionType": "semver"}, {"version": "6.6.88", "lessThan": "6.6.145", "status": "affected", "versionType": "semver"}, {"version": "6.12.24", "lessThan": "6.12.97", "status": "affected", "versionType": "semver"}, {"version": "5.4.297", "lessThan": "5.5", "status": "affected", "versionType": "semver"}, {"version": "6.13.12", "lessThan": "6.14", "status": "affected", "versionType": "semver"}, {"version": "6.14.3", "lessThan": "6.15", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/sch_fq_codel.c"], "versions": [{"version": "6.15", "status": "affected"}, {"version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.10.241", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.190", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.135", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.88", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.24", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.297"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3e515188393e62a718ccebee651ee74514104ff6"}, {"url": "https://git.kernel.org/stable/c/20dd591d8f951e1e6aca5052be8785e6181055e2"}, {"url": "https://git.kernel.org/stable/c/94a5f1efdefb01f82cd228bf4e7ef1e8fc075c80"}, {"url": "https://git.kernel.org/stable/c/acc08a0c7f37ebb1901144e03a7cba7d4afd9203"}, {"url": "https://git.kernel.org/stable/c/7c09843fd2b44d9bf0de798683861d1aecd62a08"}, {"url": "https://git.kernel.org/stable/c/0500af8630c3253f0dde879bd3a73a06bb2f2b3f"}, {"url": "https://git.kernel.org/stable/c/af54df2f44d9605614bc7ed96640302a240a9a62"}, {"url": "https://git.kernel.org/stable/c/097f6fc7b1ae362dd7a9444b2572162fda73b284"}], "title": "net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen", "x_generator": {"engine": "bippy-1.2.0"}}}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/sched/sch_fq_codel.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3e515188393e62a718ccebee651ee74514104ff6", "status": "affected", "version": "cc71a757da78dd4aa1b4a9b19cb011833730ccf2", "versionType": "git"}, {"lessThan": "20dd591d8f951e1e6aca5052be8785e6181055e2", "status": "affected", "version": "eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450", "versionType": "git"}, {"lessThan": "94a5f1efdefb01f82cd228bf4e7ef1e8fc075c80", "status": "affected", "version": "829c49b6b2ff45b043739168fd1245e4e1a91a30", "versionType": "git"}, {"lessThan": "acc08a0c7f37ebb1901144e03a7cba7d4afd9203", "status": "affected", "version": "2f9761a94bae33d26e6a81b31b36e7d776d93dc1", "versionType": "git"}, {"lessThan": "7c09843fd2b44d9bf0de798683861d1aecd62a08", "status": "affected", "version": "4d55144b12e742404bb3f8fee6038bafbf45619d", "versionType": "git"}, {"lessThan": "0500af8630c3253f0dde879bd3a73a06bb2f2b3f", "status": "affected", "version": "342debc12183b51773b3345ba267e9263bdfaaef", "versionType": "git"}, {"lessThan": "af54df2f44d9605614bc7ed96640302a240a9a62", "status": "affected", "version": "342debc12183b51773b3345ba267e9263bdfaaef", "versionType": "git"}, {"lessThan": "097f6fc7b1ae362dd7a9444b2572162fda73b284", "status": "affected", "version": "342debc12183b51773b3345ba267e9263bdfaaef", "versionType": "git"}, {"status": "affected", "version": "7a742a9506849d1c1aa71e36c89855ceddc7d58e", "versionType": "git"}, {"status": "affected", "version": "e73c838c80dccb9e4f19becc11d9f3cb4a27d483", "versionType": "git"}, {"status": "affected", "version": "a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31", "versionType": "git"}, {"lessThan": "5.10.261", "status": "affected", "version": "5.10.241", "versionType": "semver"}, {"lessThan": "5.15.212", "status": "affected", "version": "5.15.190", "versionType": "semver"}, {"lessThan": "6.1.178", "status": "affected", "version": "6.1.135", "versionType": "semver"}, {"lessThan": "6.6.145", "status": "affected", "version": "6.6.88", "versionType": "semver"}, {"lessThan": "6.12.97", "status": "affected", "version": "6.12.24", "versionType": "semver"}, {"lessThan": "5.5", "status": "affected", "version": "5.4.297", "versionType": "semver"}, {"lessThan": "6.14", "status": "affected", "version": "6.13.12", "versionType": "semver"}, {"lessThan": "6.15", "status": "affected", "version": "6.14.3", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/sched/sch_fq_codel.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"lessThan": "6.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen\n\nWhenever fq_codel drops packets during peek, it calls\nqdisc_tree_reduce_backlog. An issue arises because it calls\nqdisc_tree_reduce_backlog before it reincrements the qlen. If qlen drops\nto zero, but peek returns an skb, the parent's qlen_notify callback will be\nexecuted even though fq_codel still has 1 packet on the queue and, thus,\nwill mistakenly deactivate the parent's class causing issues like a recent\nreport [1] and a wild memory access in qfq:\n\n[ 29.371146][ T360] Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] SMP KASAN NOPTI\n[ 29.371666][ T360] KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127]\n[ 29.371987][ T360] CPU: 6 UID: 0 PID: 360 Comm: tc Not tainted 7.1.0-rc5-00285-gc530e5b2dbc6-dirty #82 PREEMPT(full)\n[ 29.372384][ T360] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\n[ 29.372620][ T360] RIP: 0010:qfq_deactivate_agg (include/linux/list.h:1029 (discriminator 2) include/linux/list.h:1043 (discriminator 2) net/sched/sch_qfq.c:1369 (discriminator 2) net/sched/sch_qfq.c:1395 (discriminator 2)) sch_qfq\n[ 29.373544][ T360] RSP: 0018:ffff888102417370 EFLAGS: 00010216\n[ 29.373800][ T360] RAX: 0000000000000000 RBX: ffff88811224d568 RCX: dffffc0000000000\n[ 29.374079][ T360] RDX: 1ffff11021fe1543 RSI: ffff88810ff0aa00 RDI: dffffc0000000000\n[ 29.374368][ T360] RBP: ffff88811224c280 R08: dead000000000122 R09: 1bd5a00000000024\n[ 29.374649][ T360] R10: fffffbfff7940329 R11: fffffbfff7940329 R12: 0000000000000000\n[ 29.374926][ T360] R13: dead000000000100 R14: ffff88811224d580 R15: ffff88811224d578\n[ 29.375207][ T360] FS: 00007f5b794e5780(0000) GS:ffff88815d1e9000(0000) knlGS:0000000000000000\n[ 29.375545][ T360] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 29.375823][ T360] CR2: 000055ffb091f000 CR3: 000000010a305000 CR4: 0000000000750ef0\n[ 29.376103][ T360] PKRU: 55555554\n[ 29.376258][ T360] Call Trace:\n[ 29.376401][ T360] <TASK>\n...\n[ 29.376885][ T360] qfq_reset_qdisc (net/sched/sch_qfq.c:357 net/sched/sch_qfq.c:1487) sch_qfq\n[ 29.377074][ T360] qdisc_reset (net/sched/sch_generic.c:1057)\n[ 29.377414][ T360] __qdisc_destroy (net/sched/sch_generic.c:1096)\n[ 29.377600][ T360] qdisc_graft (net/sched/sch_api.c:1062 net/sched/sch_api.c:1053 net/sched/sch_api.c:1159)\n[ 29.378593][ T360] tc_get_qdisc (net/sched/sch_api.c:1528 net/sched/sch_api.c:1556)\n\nFix this by only calling qdisc_tree_reduce_backlog in peek after the\nqlen is restored.\n\n[1] http://lore.kernel.org/netdev/CAN2cbVe79oj0O9==m4+4x3v+O+qzRagA=2=wkrp9i9=CqYvyZA@mail.gmail.com/"}], "id": "CVE-2026-80630", "lastModified": "2026-08-28T08:16:47.850", "metrics": {}, "published": "2026-08-28T08:16:47.850", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0500af8630c3253f0dde879bd3a73a06bb2f2b3f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/097f6fc7b1ae362dd7a9444b2572162fda73b284"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/20dd591d8f951e1e6aca5052be8785e6181055e2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3e515188393e62a718ccebee651ee74514104ff6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7c09843fd2b44d9bf0de798683861d1aecd62a08"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/94a5f1efdefb01f82cd228bf4e7ef1e8fc075c80"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/acc08a0c7f37ebb1901144e03a7cba7d4afd9203"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/af54df2f44d9605614bc7ed96640302a240a9a62"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cc71a757da78dd4aa1b4a9b19cb011833730ccf2,3e515188393e62a718ccebee651ee74514104ff6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450,20dd591d8f951e1e6aca5052be8785e6181055e2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[829c49b6b2ff45b043739168fd1245e4e1a91a30,94a5f1efdefb01f82cd228bf4e7ef1e8fc075c80)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2f9761a94bae33d26e6a81b31b36e7d776d93dc1,acc08a0c7f37ebb1901144e03a7cba7d4afd9203)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4d55144b12e742404bb3f8fee6038bafbf45619d,7c09843fd2b44d9bf0de798683861d1aecd62a08)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[342debc12183b51773b3345ba267e9263bdfaaef,0500af8630c3253f0dde879bd3a73a06bb2fb20c3f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[342debc12183b51773b3345ba267e9263bdfaaef,af54df2f44d9605614bc7ed96640302a240a9a62)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[342debc12183b51773b3345ba267e9263bdfaaef,097f6fc7b1ae362dd7a9444b2572162fda73b284)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7a742a9506849d1c1aa71e36c89855ceddc7d58e,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e73c838c80dccb9e4f19becc11d9f3cb4a27d483,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31,*]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.10.241,5.10.261)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.15.190,5.15.212)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.135,6.1.178)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.88,6.6.145)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.24,6.12.97)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.4.297,5.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.13.12,6.14)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.14.3,6.15)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.15"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.15)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-28T09:30:18.290819+00:00", "updated": "2026-08-28T11:00:11.225091+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}

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