CVE-2026-68248: drm/i915: Return NULL on error in active_instance

lowCVSS 2.5CVE-2026-68248

CSIRTS triage

vendor: Linux product: Linux kernel Memory corruption

What: active_instance function in drm/i915 fails to return NULL on error, causing use-after-free or invalid dereference.
Who is affected: Systems running affected Linux kernel versions with Intel GPU driver enabled.
Urgency: Low severity (CVSS 2.5) NULL pointer handling; update kernel when convenient.
Action: Update to a patched Linux kernel version that returns NULL on error in active_instance.

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: low — CVSS 2.5
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68248

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-2026-682480.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-68248	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 drm/i915

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.

highCVE-2026-72452: In the Linux kernel, the following vulnerability has been resolved: drm/i915: clear CRTC color…nvd · 2026-08-15
unknownCVE-2026-68248: In the Linux kernel, the following vulnerability has been resolved: drm/i915: Return NULL on e…nvd · 2026-08-10
mediumCVE-2023-53002: drm/i915: Fix a memory leak with reused mmap_offsetmsrc · 2026-08-06
mediumCVE-2023-52981: drm/i915: Fix request ref counting during error capture & debugfs dumpmsrc · 2026-08-06
highCVE-2026-63884: In the Linux kernel, the following vulnerability has been resolved: drm/i915: Fix potential UA…nvd · 2026-07-19