7.8

CVE-2023-53263: linux Use After Free

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2023-53263DEBIAN-CVE-2023-53263
Published 16-09-2025Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2023-53263 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.9% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.16%
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 13 · Related 12
RHSA-2024:2394SUSE-SU-2025:03600-1SUSE-SU-2025:03615-1SUSE-SU-2025:03634-1SUSE-SU-2025:20851-1SUSE-SU-2025:20861-1

Timeline

  1. 16-09-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create We can't simply free the connector after calling drm_connector_init on it. We need to clean up the drm side first. It might not fix all regressions from commit 2b5d1c29f6c4 ("drm/nouveau/disp: PIOR DP uses GPIO for HPD, not PMGR AUX interrupts"), but at least it fixes a memory corruption in error handling related to that commit.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

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

Ubuntu84 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ 95983aea80038539ebc70e41e73e9bb4eabd1a92, < 3f27451c9f29d5ed00232968680c7838a44dcac7 | ≥ 95983aea80038539ebc70e41e73e9bb4eabd1a92, < 872feeecd08c81d212a52211d212897b8a857544 | ≥ 95983aea80038539ebc70e41e73e9bb4eabd1a92, < 1b254b791d7b7dea6e8adc887fbbd51746d8bb27 | 6.0
  • linux_kernel≥ 6.0, < 6.1.47 | ≥ 6.2, < 6.4.12 | 6.5:rc1 | 6.5:rc2 | 6.5:rc3 | 6.5:rc4 | 6.5:rc5 | 6.5:rc6
Debian1 product
  • linux< 6.1.52-1 | < 6.4.13-1

3 vendors · 87 products

References

7 links