5.5

CVE-2023-53251: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-53251DEBIAN-CVE-2023-53251
Published 15-09-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2023-53251 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.6% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 14 · Related 14
SUSE-SU-2025:03600-1SUSE-SU-2025:03615-1SUSE-SU-2025:03628-1SUSE-SU-2025:03634-1SUSE-SU-2025:20851-1SUSE-SU-2025:20861-1

Timeline

  1. 15-09-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: pcie: fix NULL pointer dereference in iwl_pcie_irq_rx_msix_handler() rxq can be NULL only when trans_pcie->rxq is NULL and entry->entry is zero. For the case when entry->entry is not equal to 0, rxq won't be NULL even if trans_pcie->rxq is NULL. Modify checker to check for trans_pcie->rxq.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

0.00 pp

From 0.14% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.15%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu108 products
  • linux< 5.15.0-86.96
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1047.52
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ abc599efa67bb4138536360e07d677052b19e392, < 3b9de981fe7f1c6e07c7b852421ad69be3d4b6c2 | ≥ abc599efa67bb4138536360e07d677052b19e392, < 2d690495eb2766d58e25c83676f422219c4fcf18 | ≥ abc599efa67bb4138536360e07d677052b19e392, < 390e44efcf4d390b5053ad112553155d2d097c73 | ≥ abc599efa67bb4138536360e07d677052b19e392, < f71d0fc407dd028416bec002ddcc62f5acb0346a | ≥ abc599efa67bb4138536360e07d677052b19e392, < 1902f1953b8ba100ee8705cb8a6f1a9795550eca | 5.12
  • linux_kernel≥ 5.12, < 5.15.121 | ≥ 5.16, < 6.1.39 | ≥ 6.2, < 6.3.13 | ≥ 6.4, < 6.4.4
Debian1 product
  • linux< 6.1.52-1 | < 6.4.4-1

3 vendors · 111 products

References

9 links