CVE-2021-45868
MEDIUM
5.5
CVSS Score
Published: March 18, 2022 at 06:22 AM UTC
Updated: June 17, 2026 at 04:14 AM UTC
17 products affected across 2 vendorsLinux KernelH700S FirmwareH410S Firmware
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Severity
MEDIUM5.5
Exploit prediction
EPSS 1%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 5.15.3
Affected range stops below 5.15.3, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory 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=9bf3d20331295b1ecb81f4ed9ef358c51699a050
- https://www.openwall.com/lists/oss-security/2022/03/17/1
- https://www.openwall.com/lists/oss-security/2022/03/17/2
References (6)
x_refsource_MISCExploitIssue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.kernel.org/show_bug.cgi?id=214655x_refsource_MISCMailing ListRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20220419-0003/x_refsource_MISCExploitMailing ListPatchThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2022/03/17/1x_refsource_MISCExploitMailing ListPatchThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2022/03/17/2CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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