CVE-2023-53457

MEDIUM EPSS 4.2%
Published Oct 1, 20259mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 1, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: FS: JFS: Fix null-ptr-deref Read in txBegin Syzkaller reported an issue where txBegin may be called on a superblock in a read-only mounted filesystem which leads to NULL pointer deref. This could be solved by checking if the filesystem is read-only before calling txBegin, and returning with appropiate error code.

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
4.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥2.6.12.1  –  <4.14.324
linuxlinux_kernel*≥4.15  –  <4.19.293
linuxlinux_kernel*≥4.20  –  <5.4.255
linuxlinux_kernel*≥5.5  –  <5.10.192
linuxlinux_kernel*≥5.11  –  <5.15.123
linuxlinux_kernel*≥5.16  –  <6.1.42
linuxlinux_kernel*≥6.2  –  <6.4.7
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any
linuxlinux_kernel2.6.12any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/1b4c144767736221cad92c132f72b3c6ed06a0ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3e94d0d378d2754b26fc54b429582553f7b53e15
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/47cfdc338d674d38f4b2f22b7612cc6a2763ba27
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a7225e9e09519deb7e0c42eb6070029cc456e84d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd2db13fb72ff18c633a48229589d42ceb89d1f8
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1b4c144767736221cad92c132f72b3c6ed06a0ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3e94d0d378d2754b26fc54b429582553f7b53e15
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/47cfdc338d674d38f4b2f22b7612cc6a2763ba27
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a7225e9e09519deb7e0c42eb6070029cc456e84d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd2db13fb72ff18c633a48229589d42ceb89d1f8
    Patch