5.5

CVE-2023-53049: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2023-53049DEBIAN-CVE-2023-53049
Published 02-05-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2023-53049 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.20%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 4
SUSE-SU-2025:01918-1SUSE-SU-2025:01966-1SUSE-SU-2025:02173-1SUSE-SU-2025:02262-1

Timeline

  1. 02-05-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: usb: ucsi: Fix NULL pointer deref in ucsi_connector_change() When ucsi_init() fails, ucsi->connector is NULL, yet in case of ucsi_acpi we may still get events which cause the ucs_acpi code to call ucsi_connector_change(), which then derefs the NULL ucsi->connector pointer. Fix this by not setting ucsi->ntfy inside ucsi_init() until ucsi_init() has succeeded, so that ucsi_connector_change() ignores the events because UCSI_ENABLE_NTFY_CONNECTOR_CHANGE is not set in the ntfy mask.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

+0.01 pp

From 0.19% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.20%

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

Ubuntu101 products
  • linux< 5.15.0-79.86
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1042.47
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ bdc62f2bae8fb0e8e99574de5232f0a3c54a27df, < a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0 | ≥ bdc62f2bae8fb0e8e99574de5232f0a3c54a27df, < 7dd27aed9c456670b3882877ef17a48195f21693 | ≥ bdc62f2bae8fb0e8e99574de5232f0a3c54a27df, < 1c5abcb13491da8c049f20462189c12c753ba978 | ≥ bdc62f2bae8fb0e8e99574de5232f0a3c54a27df, < 7ef0423e43f877a328454059d46763043ce3da44 | ≥ bdc62f2bae8fb0e8e99574de5232f0a3c54a27df, < f87fb985452ab2083967103ac00bfd68fb182764 | 5.5
  • linux_kernel≥ 5.5, < 5.10.177 | ≥ 5.11, < 5.15.105 | ≥ 5.16, < 6.1.22 | ≥ 6.2, < 6.2.9 | 6.3:rc1 | 6.3:rc2 | 6.3:rc3
Debian1 product
  • linux< 6.1.25-1

3 vendors · 104 products

References

9 links