7.8

CVE-2022-50454: drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()

Modified
AliasesUBUNTU-CVE-2022-50454DEBIAN-CVE-2022-50454
Published 01-10-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-50454 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 5.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
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 listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 6
SUSE-SU-2025:03613-1SUSE-SU-2025:03615-1SUSE-SU-2025:03626-1SUSE-SU-2025:03628-1SUSE-SU-2025:3716-1SUSE-SU-2025:3761-1

Timeline

  1. 01-10-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code back to the caller. On failures, ttm will call nouveau_bo_del_ttm() and free the memory.Thus, when nouveau_bo_init() returns an error, the gem object has already been released. Then the call to nouveau_bo_ref() will use the freed "nvbo->bo" and lead to a use-after-free bug. We should delete the call to nouveau_bo_ref() to avoid the use-after-free.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu115 products
  • linux< 5.4.0-139.156 | < 5.15.0-60.66
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1096.104 | < 5.15.0-1030.34
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5, < 56ee9577915dc06f55309901012a9ef68dbdb5a8 | ≥ 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5, < 5d6093c49c098d86c7b136aba9922df44aeb6944 | ≥ 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5, < 861f085f81fd569b02cc2c11165a9e6cca144424 | ≥ 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5, < 3aeda2fe6517cc52663d4ce3588dd43f0d4124a7 | ≥ 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5, < 7d80473e9f12548ac05b36af4fb9ce80f2f73509 | ≥ 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5, < 540dfd188ea2940582841c1c220bd035a7db0e51 | 5.4
  • linux_kernel≥ 5.4, < 5.4.220 | ≥ 5.5, < 5.10.150 | ≥ 5.11, < 5.15.75 | ≥ 5.16, < 5.19.17 | ≥ 6.0, < 6.0.3
Debian1 product
  • linux< 6.0.3-1

3 vendors · 118 products

References

10 links