{"id":"CVE-2026-46229","title":"drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Clear VRAM on allocation to prevent stale data exposure\n\nKFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE\nbut not AMDGPU_GEM_CREATE_VRAM_CLEA…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 6bcf59545c84a5105d14d59f40069ef4c033584e","Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 1db431380879fd9d28b763a88a0c0431be5be8df","Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 32b153658f017ad2f5bf8aab479e8d16ac95bc3a","Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 77d0b5d11387071770246fd0185a69fa28e8e109","Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 047d44d8d29a6a1a5757256837aa9dd78e3cd0b5","Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < ad52d61d82181dbdb7f05826de38352d5e550cc2","Linux 5.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:12:32.118593Z"},"published":"2026-05-28","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:13:45.647Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46229","references":[{"url":"https://git.kernel.org/stable/c/6bcf59545c84a5105d14d59f40069ef4c033584e"},{"url":"https://git.kernel.org/stable/c/1db431380879fd9d28b763a88a0c0431be5be8df"},{"url":"https://git.kernel.org/stable/c/32b153658f017ad2f5bf8aab479e8d16ac95bc3a"},{"url":"https://git.kernel.org/stable/c/77d0b5d11387071770246fd0185a69fa28e8e109"},{"url":"https://git.kernel.org/stable/c/047d44d8d29a6a1a5757256837aa9dd78e3cd0b5"},{"url":"https://git.kernel.org/stable/c/ad52d61d82181dbdb7f05826de38352d5e550cc2"}],"tags":["cve.org"],"epss":0.00119,"epssPercentile":0.01779,"ingestedAt":"2026-11-05T15:02:32.325Z","slug":"CVE-2026-46229","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Clear VRAM on allocation to prevent stale data exposure\n\nKFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE\nbut not AMDGPU_GEM_CREATE_VRAM_CLEARED, leaving freshly allocated\nVRAM with stale data from prior use observable by compute kernels.\n\nThe GEM ioctl path already sets VRAM_CLEARED for all userspace\nallocations via amdgpu_gem_create_ioctl() and\namdgpu_mode_dumb_create(). The KFD path was missing this flag,\nallowing stale page table remnants to leak into user buffers.\n\nThis causes crashes in RCCL P2P transport where non-zero data in\nptrExchange/head/tail fields corrupts the protocol handshake.\n\n## Affected\n\n- `Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 6bcf59545c84a5105d14d59f40069ef4c033584e`\n- `Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 1db431380879fd9d28b763a88a0c0431be5be8df`\n- `Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 32b153658f017ad2f5bf8aab479e8d16ac95bc3a`\n- `Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 77d0b5d11387071770246fd0185a69fa28e8e109`\n- `Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < 047d44d8d29a6a1a5757256837aa9dd78e3cd0b5`\n- `Linux >= 6856e4b65f64eeb3f17148f79b36c1d60c627529 < ad52d61d82181dbdb7f05826de38352d5e550cc2`\n- `Linux 5.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}