{"id":"CVE-2026-72035","revision":"d48469edc54c411c82dec5fb408d85a4","records":[{"revision":"d48469edc54c411c82dec5fb408d85a4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72035","aliases":[],"title":"net/sched: sch_taprio: Replace direct dequeue call with peek and qdisc_dequeue_peeked","description":"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 ->dequeue() 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.","state":0,"publishedAt":"2026-08-15T05:51:56.374+00:00","modifiedAt":"2026-10-19T21:19:23.999+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/sched/sch_taprio.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\",\n                            \"lessThan\": \"51f8af240aed903e988755af33d7491030b50ae9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\",\n                            \"lessThan\": \"17ab5f76f3899f67e5569722f334591f4b88b17b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\",\n                            \"lessThan\": \"f60d5c12e0551012cee5c272b0bcbcc78f7bb506\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\",\n                            \"lessThan\": \"6ee5a7665a9080bcb05d703bf981a579436fd05e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\",\n                            \"lessThan\": \"18d580cb00c55805633bae45e90cf22ed6b8e424\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\",\n                            \"lessThan\": \"e2b7ee61989f2d39df6c2cc06f9db1aea69bdb09\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\",\n                            \"lessThan\": \"2dcebbd1ad2e180fe7b98bf346ced69a872e11e6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5a781ccbd19e4664babcbe4b4ead7aa2b9283d22\",\n                            \"lessThan\": \"e056e1dfcddca877dd46d704e8ec9860cfc9ec44\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/sched/sch_taprio.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.20\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.20\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.266\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.217\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.184\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.97\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","score":8.2,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/51f8af240aed903e988755af33d7491030b50ae9","https://git.kernel.org/stable/c/17ab5f76f3899f67e5569722f334591f4b88b17b","https://git.kernel.org/stable/c/f60d5c12e0551012cee5c272b0bcbcc78f7bb506","https://git.kernel.org/stable/c/6ee5a7665a9080bcb05d703bf981a579436fd05e","https://git.kernel.org/stable/c/18d580cb00c55805633bae45e90cf22ed6b8e424","https://git.kernel.org/stable/c/e2b7ee61989f2d39df6c2cc06f9db1aea69bdb09","https://git.kernel.org/stable/c/2dcebbd1ad2e180fe7b98bf346ced69a872e11e6","https://git.kernel.org/stable/c/e056e1dfcddca877dd46d704e8ec9860cfc9ec44"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72035","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72035","identifiers":["CVE-2026-72035"]},"retained":false,"historicalAffected":[]}],"coverage":[]}