CVE-2026-72036

{"id": "CVE-2026-72036", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "77be155cba4e163e8bba9fd27222a8b6189ec4f7", "lessThan": "3e5fd9d14f2d228e7260251f2e4a1d41ba8f705a", "versionType": "git"}, {"status": "affected", "version": "77be155cba4e163e8bba9fd27222a8b6189ec4f7", "lessThan": "eb1a9637f0bd84b5db8803af65dfb1f44785406f", "versionType": "git"}, {"status": "affected", "version": "77be155cba4e163e8bba9fd27222a8b6189ec4f7", "lessThan": "7a5a1582710981ef6637de9f074a60a5b1d63222", "versionType": "git"}, {"status": "affected", "version": "77be155cba4e163e8bba9fd27222a8b6189ec4f7", "lessThan": "86a61e46a1919e8abf4d227c204773dabb24068a", "versionType": "git"}, {"status": "affected", "version": "77be155cba4e163e8bba9fd27222a8b6189ec4f7", "lessThan": "1b9cc255e8089606b92b2adf504e334573682821", "versionType": "git"}, {"status": "affected", "version": "77be155cba4e163e8bba9fd27222a8b6189ec4f7", "lessThan": "5889064919a1e5c0a9469c54895000414fc46944", "versionType": "git"}, {"status": "affected", "version": "77be155cba4e163e8bba9fd27222a8b6189ec4f7", "lessThan": "fffeb2ab5eeb823d4c2330571a098f63237c9049", "versionType": "git"}, {"status": "affected", "version": "77be155cba4e163e8bba9fd27222a8b6189ec4f7", "lessThan": "54f6b0c843e228d499eb4b6bbb89df68cad9ad5d", "versionType": "git"}], "programFiles": ["net/sched/sch_multiq.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.29"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.29", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.261", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.97", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.40", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.5", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/sched/sch_multiq.c"], "defaultStatus": "affected"}]}], "published": "2026-08-15T06:21:12.613", "references": [{"url": "https://git.kernel.org/stable/c/1b9cc255e8089606b92b2adf504e334573682821", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3e5fd9d14f2d228e7260251f2e4a1d41ba8f705a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/54f6b0c843e228d499eb4b6bbb89df68cad9ad5d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5889064919a1e5c0a9469c54895000414fc46944", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7a5a1582710981ef6637de9f074a60a5b1d63222", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/86a61e46a1919e8abf4d227c204773dabb24068a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/eb1a9637f0bd84b5db8803af65dfb1f44785406f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fffeb2ab5eeb823d4c2330571a098f63237c9049", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_multiq: Replace direct dequeue call with peek and qdisc_dequeue_peeked\n\nmultiq_dequeue() takes a packet from a band's child with a direct\n->dequeue() call after multiq_peek() peeked it. When the child is\nnon-work-conserving the peek stashes the skb in the child's gso_skb, so\nthe direct dequeue returns a different skb and orphans the stash,\ndesyncing the child's qlen/backlog. With a qfq child reached through a\npeeking parent (e.g. tbf) this re-enters the child on an emptied list and\ndereferences NULL, panicking the kernel from softirq on ordinary egress.\n\nTake the packet through qdisc_dequeue_peeked(), as sch_prio already does\nand as sch_red and sch_sfb were just fixed to do. The helper is a no-op\nwhen the child has no stash, so a work-conserving child is unaffected."}], "lastModified": "2026-08-17T06:18:01.457", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}