CVE-2026-74417 Linux CVE debrief

Who should care

Linux kernel developers, administrators, and users of systems employing the drm/radeon module should assess their exposure and take remediation steps as necessary. This includes verifying Linux kernel versions, applying patches or updates, and monitoring for potential exploitation attempts or unusual activity. The vulnerability has been resolved, but prompt assessment and remediation are recommended for Linux kernel deployments using the drm/radeon module.

Why it matters

High-severity integer overflow vulnerability in Linux kernel's drm/radeon module requires prompt assessment and remediation.

• Potential creation of invalid or zero-sized dumb buffers
• Possible exploitation leading to denial of service or privilege escalation
• Requires verification of Linux kernel versions and patch application
• Remediation priority for Linux kernel deployments using drm/radeon

Technical summary

The `radeon_align_pitch()` function in the Linux kernel's drm/radeon module is vulnerable to an integer overflow issue. This could lead to the creation of invalid or zero-sized dumb buffers. The vulnerability has been addressed through the use of `check_add_overflow()` and `check_mul_overflow()` to prevent such overflows. The drm/radeon module in the Linux kernel is affected, and Linux kernel developers, administrators, and users of systems employing the drm/radeon module should assess their exposure and take remediation steps as necessary.

Defensive priority

High-priority assessment and remediation recommended for Linux kernel deployments using the drm/radeon module.

Recommended defensive actions

• Assess Linux kernel deployments for exposure to the drm/radeon module
• Verify and apply patches or updates to address the integer overflow vulnerability
• Monitor for potential exploitation attempts or unusual activity
• 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 vulnerability was found via AST-based call-graph analysis using sqry. Official CVE Program record and NVD vulnerability detail pages provide additional context. The drm/radeon module in the Linux kernel is affected, and the issue has been resolved through the use of `check_add_overflow()` and `check_mul_overflow()`. Linux kernel developers, administrators, and users of systems employing the drm/radeon module should verify their exposure and apply patches or updates as necessary.

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.