CVE-2021-45868

Description

In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.

Affected Platforms

Weakness Type

CWE-416

References

• https://bugzilla.kernel.org/show_bug.cgi?id=214655
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9b…
• https://security.netapp.com/advisory/ntap-20220419-0003/
• https://www.openwall.com/lists/oss-security/2022/03/17/1
• https://www.openwall.com/lists/oss-security/2022/03/17/2