CVE-2024-36966

In the Linux kernel, the following vulnerability has been resolved: erofs: reliably distinguish block based and fscache mode When erofs_kill_sb() is called in block dev based mode, s_bdev may not have been initialised yet, and if CONFIG_EROFS_FS_ONDEMAND is enabled, it will be mistaken for fscache mode, and then attempt to free an anon_dev that has never been allocated, triggering the following warning: ============================================ ida_free called for id=0 which is not allocated. WARNING: CPU: 14 PID: 926 at lib/idr.c:525 ida_free+0x134/0x140 Modules linked in: CPU: 14 PID: 926 Comm: mount Not tainted 6.9.0-rc3-dirty #630 RIP: 0010:ida_free+0x134/0x140 Call Trace: <TASK> erofs_kill_sb+0x81/0x90 deactivate_locked_super+0x35/0x80 get_tree_bdev+0x136/0x1e0 vfs_get_tree+0x2c/0xf0 do_new_mount+0x190/0x2f0 [...] ============================================ Now when erofs_kill_sb() is called, erofs_sb_info must have been initialised, so use sbi->fsid to distinguish between the two modes.

The following products are affected by CVE-2024-36966 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2024-36966.

URL	Resource
https://git.kernel.org/stable/c/7af2ae1b1531feab5d38ec9c8f472dc6cceb4606
https://git.kernel.org/stable/c/dcdd49701e429c55b3644fd70fc58d85745f8cfe
https://git.kernel.org/stable/c/f9b877a7ee312ec8ce17598a7ef85cb820d7c371
https://lore.kernel.org/linux-cve-announce/2024060804-CVE-2024-36966-8bbb@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2024-36966
https://www.cve.org/CVERecord?id=CVE-2024-36966