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CVE-2021-4155 Details

Description

A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/security/cve/CVE-2021-4155 CVEMitigationThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2034813 CVEIssue TrackingThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=983d8e60f50806f90534cc5373d0ce867e5aaf79 CVEMailing ListPatchVendor Advisory
https://security-tracker.debian.org/tracker/CVE-2021-4155 CVEThird Party Advisory
https://www.openwall.com/lists/oss-security/2022/01/10/1 CVEMailing ListPatchThird Party Advisory

see all 10 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-131Incorrect Calculation of Buffer Size[email protected]
CWE-131Incorrect Calculation of Buffer Size[email protected]

Affected Products

ProductVersions
linux linux kernel
< 5.16

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-4155
NVD Published Date:
Aug 24, 2022
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-4155 Details - Not Deferred