CVE-2026-53385: vc_screen: fix null-ptr-deref in vcs_notifier() during concurrent vcs_write

mediumCVSS 5.5CVE-2026-53385

CSIRTS triage

vendor: Linux product: vc_screenOther

What: A null pointer dereference occurs in vcs_notifier() during concurrent vcs_write operations.
Who is affected: Deployments using vc_screen are affected.
Urgency: Remediation is necessary to prevent potential crashes or exploitation.
Action: Update to the latest version to fix the issue.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.5
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53385

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-533850.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53385	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for vc_screen

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-53385: In the Linux kernel, the following vulnerability has been resolved: vc_screen: fix null-ptr-de…nvd · 2026-07-19