CVE-2023-53476

MEDIUM EPSS 4.3%
Published Oct 1, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 1, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry() This condition needs to match the previous "if (epcp->state == LISTEN) {" exactly to avoid a NULL dereference of either "listen_ep" or "ep". The problem is that "epcp" has been re-assigned so just testing "if (epcp->state == LISTEN) {" a second time is not sufficient.

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
4.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥4.18  –  <5.15.99
linuxlinux_kernel*≥5.16  –  <6.1.16
linuxlinux_kernel*≥6.2  –  <6.2.3

References 4

  • git.kernel.org https://git.kernel.org/stable/c/24278dc380aab6a1aef0a75317f57ad4c2453cf6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ca446b127c568b59cb8d9748b6f70499624bb18
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76e0396313c79ecd0df44ee3c18745cfac52b3e6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dd55240e4364d64befcc575b0d33091881524f42
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/24278dc380aab6a1aef0a75317f57ad4c2453cf6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ca446b127c568b59cb8d9748b6f70499624bb18
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76e0396313c79ecd0df44ee3c18745cfac52b3e6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dd55240e4364d64befcc575b0d33091881524f42
    Patch