Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure KFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE but not AMDGPU_GEM_CREATE_VRAM_CLEARED, leaving freshly allocated VRAM with stale data from prior use observable by compute kernels. The GEM ioctl path already sets VRAM_CLEARED for all userspace allocations via amdgpu_gem_create_ioctl() and amdgpu_mode_dumb_create(). The KFD path was missing this flag, allowing stale page table remnants to leak into user buffers. This causes crashes in RCCL P2P transport where non-zero data in ptrExchange/head/tail fields corrupts the protocol handshake.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.4, < 6.6.140 |
References
- https://git.kernel.org/stable/c/047d44d8d29a6a1a5757256837aa9dd78e3cd0b5Patch
- https://git.kernel.org/stable/c/1db431380879fd9d28b763a88a0c0431be5be8dfPatch
- https://git.kernel.org/stable/c/32b153658f017ad2f5bf8aab479e8d16ac95bc3aPatch
- https://git.kernel.org/stable/c/77d0b5d11387071770246fd0185a69fa28e8e109Patch
- https://git.kernel.org/stable/c/ad52d61d82181dbdb7f05826de38352d5e550cc2Patch
FAQ
What is CVE-2026-46229?
CVE-2026-46229 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure KFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEAS...
How severe is CVE-2026-46229?
CVE-2026-46229 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46229?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.