CVE-2026-46229 Affecting kernel-default-livepatch package, versions <6.4.0-150700.53.66.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-SLES157-KERNELDEFAULTLIVEPATCH-17903379
  • published9 Jul 2026
  • disclosed8 Jul 2026

Introduced: 8 Jul 2026

NewCVE-2026-46229  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kernel-default-livepatch to version 6.4.0-150700.53.66.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-livepatch package and not the kernel-default-livepatch package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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 Base Scores

version 3.1