CVE-2023-53643

MEDIUM EPSS 3.7%
Published Oct 7, 20258mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 7, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: don't access released socket during error recovery While the error recovery work is temporarily failing reconnect attempts, running the 'nvme list' command causes a kernel NULL pointer dereference by calling getsockname() with a released socket. During error recovery work, the nvme tcp socket is released and a new one created, so it is not safe to access the socket without proper check.

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
3.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 2

VendorProductVersionRange
linuxlinux_kernel*≥6.1  –  <6.1.18
linuxlinux_kernel*≥6.2  –  <6.2.5

References 3

  • git.kernel.org https://git.kernel.org/stable/c/76d54bf20cdcc1ed7569a89885e09636e9a8d71d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d82f762db4776fa11de88018f0f5de2d5db72a72
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fe2d9e54165dadaa0d0cc3355c0be9c3e129fa0d
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/76d54bf20cdcc1ed7569a89885e09636e9a8d71d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d82f762db4776fa11de88018f0f5de2d5db72a72
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fe2d9e54165dadaa0d0cc3355c0be9c3e129fa0d
    Patch