CVE-2022-50454

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-10-01. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

October 1, 2025

Last Modified

August 5, 2026

Advisory Details (6)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/861f085f81fd569b02cc2c11165a9e6cca144424
generic

drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7d80473e9f12548ac05b36af4fb9ce80f2f73509
generic

drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5d6093c49c098d86c7b136aba9922df44aeb6944
generic

drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/56ee9577915dc06f55309901012a9ef68dbdb5a8
generic

drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/540dfd188ea2940582841c1c220bd035a7db0e51
generic

drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3aeda2fe6517cc52663d4ce3588dd43f0d4124a7

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.4.220—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 111 total refreshes for this CVE.

  1. 2026-08-06 13:44 UTCEPSS rescore
  2. 2026-08-05 19:15 UTCEPSS rescore
  3. 2026-08-05 09:19 UTCEG score recompute
  4. 2026-08-05 09:19 UTCGHSA enrichment
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Frequently asked(5)

What is CVE-2022-50454?
CVE-2022-50454 is a high vulnerability published on October 1, 2025. In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix a use-after-free in nouveaugemprimeimportsg_table() nouveauboinit() is backed by ttmboinit() and ferries its return code back to the caller. On failures, ttm will call nouveaubodel_ttm() and free the memory.Thus,…
When was CVE-2022-50454 disclosed?
CVE-2022-50454 was first published in the National Vulnerability Database on October 1, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-50454 actively exploited?
CVE-2022-50454 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.3% of all scored CVEs.
What is the CVSS score of CVE-2022-50454?
CVE-2022-50454 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-50454?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50454, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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