CVE-2026-97576 Linux CVE debrief

Who should care

Linux kernel administrators, maintainers, and security teams should assess exposure and prioritize patching vulnerable installations. Operators of Linux kernel-based systems should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Why it matters

CVE-2026-97576 is a Linux kernel vulnerability that requires patching to prevent potential exploitation. Defenders should prioritize patching vulnerable installations and verify Linux kernel updates.

• Potential denial of service due to invalid tile counts
• Possible elevation of privileges through exploitation
• Verification of Linux kernel installations for vulnerability

Technical summary

The Linux kernel vulnerability CVE-2026-97576 involves validating HEVC tile counts in the media v4l2-ctrls module. The stateless HEVC decoders read entries from column_width_minus1[] and row_height_minus1[] and use them as tile-loop bounds. However, std_validate_compound() does not bound these u8 counts. This vulnerability has been patched by rejecting V4L2_CTRL_TYPE_HEVC_PPS with tiling enabled whose tile counts exceed the uAPI array capacity.

Defensive priority

Defenders should prioritize patching vulnerable Linux kernel installations to prevent potential exploitation.

Recommended defensive actions

• Patch vulnerable Linux kernel installations
• Verify and apply Linux kernel updates
• Monitor Linux kernel installations for vulnerability
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability. Linux kernel administrators should verify Linux kernel installations for vulnerability and apply patches to prevent potential exploitation. The corpus does not establish versions, exploitation, impact, or remediation beyond patching and verifying Linux kernel updates.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.