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.
Related CPE's
References
Mailing ListRelease NotesVendor Advisory
ExploitMailing ListPatchThird Party Advisory
ExploitMailing ListPatchThird Party Advisory
ExploitIssue TrackingVendor Advisory
Mailing ListPatchVendor Advisory
Third Party Advisory
CvssV3 impact
Version | 3.1 |
VectorString | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
AttackVector | LOCAL |
AttackComplexity | LOW |
PrivilegesRequired | NONE |
UserInteraction | REQUIRED |
Scope | UNCHANGED |
ConfidentialityImpact | NONE |
IntegrityImpact | NONE |
AvailabilityImpact | HIGH |
BaseScore | 5.5 |
BaseSeverity | MEDIUM |
CvssV2 impact
Version | 2.0 |
VectorString | AV:N/AC:M/Au:N/C:N/I:N/A:P |
AccessVector | NETWORK |
AccessComplexity | MEDIUM |
Authentication | NONE |
ConfidentialityImpact | NONE |
IntegrityImpact | NONE |
AvailabilityImpact | PARTIAL |
BaseScore | 4.300000190734863 |