{"id":"CVE-2026-72035","summary":"net/sched: sch_taprio: Replace direct dequeue call with peek and qdisc_dequeue_peeked","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_taprio: Replace direct dequeue call with peek and qdisc_dequeue_peeked\n\nWhen taprio's software path peeks a non-work-conserving child qdisc, the\nchild stashes the peeked skb in its gso_skb; taprio_dequeue_from_txq()\nthen takes the packet with a direct child -\u003edequeue() call, which ignores\nthat stash, orphans the peeked skb and desyncs the child's qlen/backlog.\nWith a qfq child 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_red and sch_sfb\nnow do. The helper returns the child's stashed skb first and is a no-op\nwhen there is none, so a work-conserving child is unaffected and the\ngated path now consumes the skb whose length was charged to the budget.","modified":"2026-08-25T03:51:39.706228458Z","published":"2026-08-15T05:51:56.374Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72035.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/17ab5f76f3899f67e5569722f334591f4b88b17b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/18d580cb00c55805633bae45e90cf22ed6b8e424"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2dcebbd1ad2e180fe7b98bf346ced69a872e11e6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/51f8af240aed903e988755af33d7491030b50ae9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ee5a7665a9080bcb05d703bf981a579436fd05e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e056e1dfcddca877dd46d704e8ec9860cfc9ec44"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e2b7ee61989f2d39df6c2cc06f9db1aea69bdb09"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f60d5c12e0551012cee5c272b0bcbcc78f7bb506"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72035.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72035"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22"},{"fixed":"51f8af240aed903e988755af33d7491030b50ae9"},{"fixed":"17ab5f76f3899f67e5569722f334591f4b88b17b"},{"fixed":"f60d5c12e0551012cee5c272b0bcbcc78f7bb506"},{"fixed":"6ee5a7665a9080bcb05d703bf981a579436fd05e"},{"fixed":"18d580cb00c55805633bae45e90cf22ed6b8e424"},{"fixed":"e2b7ee61989f2d39df6c2cc06f9db1aea69bdb09"},{"fixed":"2dcebbd1ad2e180fe7b98bf346ced69a872e11e6"},{"fixed":"e056e1dfcddca877dd46d704e8ec9860cfc9ec44"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72035.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.10.266"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.217"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.184"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72035.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}