CVE-2021-4155
MEDIUMLinux Kernel < 5.16 - Data Leak via XFS_IOC_ALLOCSP IOCTL
Title source: llmDescription
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.
References (5)
Core 5
Core References
Mailing List, Patch, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2022/01/10/1
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=2034813
Mitigation, Third Party Advisory x_refsource_misc
https://access.redhat.com/security/cve/CVE-2021-4155
Third Party Advisory x_refsource_misc
https://security-tracker.debian.org/tracker/CVE-2021-4155
Mailing List, Patch, Vendor Advisory x_refsource_misc
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=983d8e60f50806f90534cc5373d0ce867e5aaf79
Scores
CVSS v3
5.5
EPSS
0.0029
EPSS Percentile
20.3%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-131
Status
published
Products (1)
linux/linux_kernel
< 5.16
Published
Aug 24, 2022
Tracked Since
Feb 18, 2026