CVE-2021-45868

medium

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.

References

https://www.openwall.com/lists/oss-security/2022/03/17/2

https://www.openwall.com/lists/oss-security/2022/03/17/1

https://security.netapp.com/advisory/ntap-20220419-0003/

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3

https://bugzilla.kernel.org/show_bug.cgi?id=214655

Details

Source: Mitre, NVD

Published: 2022-03-18

Updated: 2023-02-04

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H