{"id":"CVE-2023-3611","details":"An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.\n\nThe qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks.\n\nWe recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.","modified":"2026-03-15T22:46:59.915952Z","published":"2023-07-21T21:15:11.897Z","related":["ALSA-2023:7077","SUSE-SU-2023:3182-1","SUSE-SU-2023:3302-1","SUSE-SU-2023:3309-1","SUSE-SU-2023:3311-1","SUSE-SU-2023:3313-1","SUSE-SU-2023:3318-1","SUSE-SU-2023:3324-1","SUSE-SU-2023:3329-1","SUSE-SU-2023:3349-1","SUSE-SU-2023:3376-1","SUSE-SU-2023:3390-1","SUSE-SU-2023:3391-1","SUSE-SU-2023:3392-1","SUSE-SU-2023:3421-1"],"references":[{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5480"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5492"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20230908-0002/"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e337087c3b5805fe0b8a46ba622a962880b5d64"},{"type":"FIX","url":"https://kernel.dance/3e337087c3b5805fe0b8a46ba622a962880b5d64"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-3611.json","unresolved_ranges":[{"events":[{"introduced":"3.8"},{"fixed":"4.14.322"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.291"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.253"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.188"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.15.121"}]},{"events":[{"introduced":"5.16"},{"fixed":"6.1.40"}]},{"events":[{"introduced":"6.2"},{"fixed":"6.4.5"}]},{"events":[{"introduced":"0"},{"last_affected":"6.5-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}