CVE-2023-53276 — Missing Release of Memory after Effective Lifetime in Linux
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.89%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 16
Description
In the Linux kernel, the following vulnerability has been resolved:
ubifs: Free memory for tmpfile name
When opening a ubifs tmpfile on an encrypted directory, function
fscrypt_setup_filename allocates memory for the name that is to be
stored in the directory entry, but after the name has been copied to the
directory entry inode, the memory is not freed.
When running kmemleak on it we see that it is registered as a leak. The
report below is triggered by a simple program 'tmpfile' just opening…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages4 packages
▶CVEListV5linux/linuxf4f61d2cc6d8789a52245a4733b3e5643be154f3 — 8ad8c67a897e68426e85990ebfe0a7d1f71fc79f+9
Patches
🔴Vulnerability Details
2OSV▶
CVE-2023-53276: In the Linux kernel, the following vulnerability has been resolved: ubifs: Free memory for tmpfile name When opening a ubifs tmpfile on an encrypted d↗2025-09-16
GHSA▶
GHSA-jfrm-9rr7-r45w: In the Linux kernel, the following vulnerability has been resolved:
ubifs: Free memory for tmpfile name
When opening a ubifs tmpfile on an encrypted↗2025-09-16