CVE-2023-53055
Description
In the Linux kernel, the following vulnerability has been resolved: fscrypt: destroy keyring after security_sb_delete() fscrypt_destroy_keyring() must be called after all potentially-encrypted inodes were evicted; otherwise it cannot safely destroy the keyring. Since inodes that are in-use by the Landlock LSM don't get evicted until security_sb_delete(), this means that fscrypt_destroy_keyring() must be called *after* security_sb_delete(). This fixes a WARN_ON followed by a NULL dereference, only possible if Landlock was being used on encrypted files.
How to fix
- linux linux_kernel5.11, 5.15.105, 6.1.22, 6.2.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.10.154 ≤ v < 5.11, 5.15.78 ≤ v < 5.15.105, 6.0.8 ≤ v < 6.1.22, 6.2 ≤ v < 6.2.9, 6.3 | 5.11, 5.15.105, 6.1.22, 6.2.9 |
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