Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.15.3 |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H700S Firmware | - |
| Netapp | H700S | - |
| Netapp | H300E Firmware | - |
| Netapp | H300E | - |
| Netapp | H500E Firmware | - |
| Netapp | H500E | - |
| Netapp | H700E Firmware | - |
| Netapp | H700E | - |
| Netapp | H410S Firmware | - |
| Netapp | H410S | - |
| Netapp | H410C Firmware | - |
| Netapp | H410C | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
Related Weaknesses (CWE)
References
- https://bugzilla.kernel.org/show_bug.cgi?id=214655ExploitIssue TrackingVendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3Mailing ListRelease NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bMailing ListPatchVendor Advisory
- https://security.netapp.com/advisory/ntap-20220419-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/03/17/1ExploitMailing ListPatch
- https://www.openwall.com/lists/oss-security/2022/03/17/2ExploitMailing ListPatch
- https://bugzilla.kernel.org/show_bug.cgi?id=214655ExploitIssue TrackingVendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3Mailing ListRelease NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bMailing ListPatchVendor Advisory
- https://security.netapp.com/advisory/ntap-20220419-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/03/17/1ExploitMailing ListPatch
- https://www.openwall.com/lists/oss-security/2022/03/17/2ExploitMailing ListPatch
FAQ
What is CVE-2021-45868?
CVE-2021-45868 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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...
How severe is CVE-2021-45868?
CVE-2021-45868 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-45868?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Netapp H300S Firmware, Netapp H300S, Netapp H700S Firmware, Netapp H700S.