CVE-2026-46229drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 15 days later
· 15 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 6856e4b65f64eeb3f17148f79b36c1d60c627529 – < 6bcf59545c84a5105d14d59f40069ef4c033584e
- affected 6856e4b65f64eeb3f17148f79b36c1d60c627529 – < 1db431380879fd9d28b763a88a0c0431be5be8df
- affected 6856e4b65f64eeb3f17148f79b36c1d60c627529 – < 32b153658f017ad2f5bf8aab479e8d16ac95bc3a
- affected 6856e4b65f64eeb3f17148f79b36c1d60c627529 – < 77d0b5d11387071770246fd0185a69fa28e8e109
- affected 6856e4b65f64eeb3f17148f79b36c1d60c627529 – < 047d44d8d29a6a1a5757256837aa9dd78e3cd0b5
- affected 6856e4b65f64eeb3f17148f79b36c1d60c627529 – < ad52d61d82181dbdb7f05826de38352d5e550cc2
- affected 5.4
- unaffected < 5.4
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.90 – ≤ 6.12.*
- unaffected 6.18.32 – ≤ 6.18.*
- unaffected 7.0.9 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References6
- https://git.kernel.org/stable/c/6bcf59545c84a5105d14d59f40069ef4c033584e (opens in a new tab)
- https://git.kernel.org/stable/c/1db431380879fd9d28b763a88a0c0431be5be8df (opens in a new tab)
- https://git.kernel.org/stable/c/32b153658f017ad2f5bf8aab479e8d16ac95bc3a (opens in a new tab)
- https://git.kernel.org/stable/c/77d0b5d11387071770246fd0185a69fa28e8e109 (opens in a new tab)
- https://git.kernel.org/stable/c/047d44d8d29a6a1a5757256837aa9dd78e3cd0b5 (opens in a new tab)
- https://git.kernel.org/stable/c/ad52d61d82181dbdb7f05826de38352d5e550cc2 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32856 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46229)Record last updated .