{"id":"CVE-2023-3776","details":"A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.\n\nIf tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.\n\nWe recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.","modified":"2026-03-15T22:01:20.862536Z","published":"2023-07-21T21:15:11.973Z","related":["ALSA-2023:5069","ALSA-2023:5091","ALSA-2023:5244","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-2023:3333-1","SUSE-SU-2023:3349-1","SUSE-SU-2023:3376-1","SUSE-SU-2023:3377-1","SUSE-SU-2023:3390-1","SUSE-SU-2023:3391-1","SUSE-SU-2023:3392-1","SUSE-SU-2023:3421-1","SUSE-SU-2023:3749-1","SUSE-SU-2023:3768-1","SUSE-SU-2023:3772-1","SUSE-SU-2023:3773-1","SUSE-SU-2023:3783-1","SUSE-SU-2023:3784-1","SUSE-SU-2023:3786-1","SUSE-SU-2023:3788-1","SUSE-SU-2023:3809-1","SUSE-SU-2023:3812-1","SUSE-SU-2023:3838-1","SUSE-SU-2023:3844-1","SUSE-SU-2023:3846-1","SUSE-SU-2023:3889-1","SUSE-SU-2023:3892-1","SUSE-SU-2023:3893-1","SUSE-SU-2023:3922-1","SUSE-SU-2023:3923-1","SUSE-SU-2023:3924-1","SUSE-SU-2023:3928-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5480"},{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html"},{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20240202-0003/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5492"},{"type":"FIX","url":"https://kernel.dance/0323bce598eea038714f941ce2b22541c46d488f"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"2.6.12"},{"fixed":"4.14.322"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.291"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.251"}]},{"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"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-3776.json"}}],"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"}]}