CVE-2021-45868

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.

CVSS v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P

EPSS

1.34% chance of exploitation in the next 30 days, 69th percentile

Published

2022-03-18

Updated

2024-08-04

Proof-of-concept exploits (2)

• https://www.openwall.com/lists/oss-security/2022/03/17/1
• https://www.openwall.com/lists/oss-security/2022/03/17/2

References

• CVE Record
• NVD entry

Related

• CVE-2021-45864
• CVE-2021-45886
• CVE-2021-45863
• CVE-2021-45887
• CVE-2021-45861
• CVE-2021-45888