drm/radeon: fix memory leak in radeon_ring_restore() on lock failure
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Partial Red Hat: 5 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix memory leak in radeon_ring_restore() on lock failure radeon_ring_restore() takes ownership of the data buffer allocated by radeon_ring_backup(). The caller (radeon_gpu_reset()) only frees it in the non-restore branch; in the restore branch it relies on radeon_ring_restore() to free it. If radeon_ring_lock() fails, the function returned early without calling kvfree(data), leaking the ring backup buffer on every GPU reset that fails at the lock stage. During repeated GPU resets this causes cumulative kernel memory exhaustion. Free data before returning the error.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-74416
- 2026-10-03 Alias added: GHSA-ccv2-c43x-5r5p
- 2026-11-06 CISA SSVC decision points changed
References
Other 8
- https://git.kernel.org/stable/c/63912418f1fbb6456ea04bbcdf8f4d5090d23350
- https://git.kernel.org/stable/c/919e3e398bf301c6418dffdcd5e5c4fd9be39cf7
- https://git.kernel.org/stable/c/07c213f3499dd72e2922c1c73fe9ffea24874bef
- https://git.kernel.org/stable/c/1c9ba32308c02c198c378fcdf06be9ffc3111147
- https://git.kernel.org/stable/c/eecfb76129ebef7e3aa41e18a4668cd91dfc6267
- https://git.kernel.org/stable/c/06dc892561f5a08b2493c34c8ec2cb94dea33159
- https://git.kernel.org/stable/c/ccc42187fc2d0720947a63ce1b9e399d2c068ff4
- https://git.kernel.org/stable/c/82f1d6042611d45b8b9de423bbcb4e0ced9ec62b
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Sources
- CVE-2026-74416 · CVE Program
- CVE-2026-74416 · NVD
- FIRST EPSS
- GHSA-ccv2-c43x-5r5p · GitHub Advisory Database · CC BY 4.0
- CVE-2026-74416 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences