CVE-2023-53396

MEDIUM EPSS 3.6%
Published Sep 18, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 18, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix memory leak in do_rename If renaming a file in an encrypted directory, function fscrypt_setup_filename allocates memory for a file name. This name is never used, and before returning to the caller the memory for it 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 'rename' that renames a file in an encrypted directory: unreferenced object 0xffff888101502840 (size 32): comm "rename", pid 9404, jiffies 4302582475 (age 435.735s) backtrace: __kmem_cache_alloc_node __kmalloc fscrypt_setup_filename do_rename ubifs_rename vfs_rename do_renameat2 To fix this we can remove the call to fscrypt_setup_filename as it's not needed.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥5.15.33  –  <5.15.112
linuxlinux_kernel*≥5.16.19  –  <5.17
linuxlinux_kernel*≥5.17.2  –  <6.1.28
linuxlinux_kernel*≥6.2  –  <6.2.15
linuxlinux_kernel*≥6.3  –  <6.3.2

References 5

  • git.kernel.org https://git.kernel.org/stable/c/3a36d20e012903f45714df2731261fdefac900cb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/43b2f7d690697182beed6f71aa57b7249d3cfc9c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/517ddc0259d7a7231486bdafde8035c478bc4088
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7e264f67b7d6580eff5c2696961039fd05c69258
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9f565752b328fe53c9e42b7d4e4d89a1da63d738
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3a36d20e012903f45714df2731261fdefac900cb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/43b2f7d690697182beed6f71aa57b7249d3cfc9c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/517ddc0259d7a7231486bdafde8035c478bc4088
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7e264f67b7d6580eff5c2696961039fd05c69258
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9f565752b328fe53c9e42b7d4e4d89a1da63d738
    Patch