{"id":"DEBIAN-CVE-2023-52848","details":"In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to drop meta_inode's page cache in f2fs_put_super()  syzbot reports a kernel bug as below:  F2FS-fs (loop1): detect filesystem reference count leak during umount, type: 10, count: 1 kernel BUG at fs/f2fs/super.c:1639! CPU: 0 PID: 15451 Comm: syz-executor.1 Not tainted 6.5.0-syzkaller-09338-ge0152e7481c6 #0 RIP: 0010:f2fs_put_super+0xce1/0xed0 fs/f2fs/super.c:1639 Call Trace:  generic_shutdown_super+0x161/0x3c0 fs/super.c:693  kill_block_super+0x3b/0x70 fs/super.c:1646  kill_f2fs_super+0x2b7/0x3d0 fs/f2fs/super.c:4879  deactivate_locked_super+0x9a/0x170 fs/super.c:481  deactivate_super+0xde/0x100 fs/super.c:514  cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254  task_work_run+0x14d/0x240 kernel/task_work.c:179  resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]  exit_to_user_mode_loop kernel/entry/common.c:171 [inline]  exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204  __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]  syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296  do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86  entry_SYSCALL_64_after_hwframe+0x63/0xcd  In f2fs_put_super(), it tries to do sanity check on dirty and IO reference count of f2fs, once there is any reference count leak, it will trigger panic.  The root case is, during f2fs_put_super(), if there is any IO error in f2fs_wait_on_all_pages(), we missed to truncate meta_inode's page cache later, result in panic, fix this case.","modified":"2026-09-15T09:02:51.422408012Z","published":"2024-05-21T16:15:21.947Z","upstream":["CVE-2023-52848"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-52848"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52848.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52848.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"}]}