{"id":"DEBIAN-CVE-2023-52668","details":"In the Linux kernel, the following vulnerability has been resolved:  btrfs: zoned: fix lock ordering in btrfs_zone_activate()  The btrfs CI reported a lockdep warning as follows by running generic generic/129.     WARNING: possible circular locking dependency detected    6.7.0-rc5+ #1 Not tainted    ------------------------------------------------------    kworker/u5:5/793427 is trying to acquire lock:    ffff88813256d028 (&cache-\u003elock){+.+.}-{2:2}, at: btrfs_zone_finish_one_bg+0x5e/0x130    but task is already holding lock:    ffff88810a23a318 (&fs_info-\u003ezone_active_bgs_lock){+.+.}-{2:2}, at: btrfs_zone_finish_one_bg+0x34/0x130    which lock already depends on the new lock.     the existing dependency chain (in reverse order) is:    -\u003e #1 (&fs_info-\u003ezone_active_bgs_lock){+.+.}-{2:2}:    ...    -\u003e #0 (&cache-\u003elock){+.+.}-{2:2}:    ...  This is because we take fs_info-\u003ezone_active_bgs_lock after a block_group's lock in btrfs_zone_activate() while doing the opposite in other places.  Fix the issue by expanding the fs_info-\u003ezone_active_bgs_lock's critical section and taking it before a block_group's lock.","modified":"2026-09-15T09:02:48.516983491Z","published":"2024-05-17T14:15:09.640Z","upstream":["CVE-2023-52668"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-52668"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52668.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52668.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}