drm/amdkfd: Fix a race condition of vram buffer unref in svm code
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 93% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Fix a race condition of vram buffer unref in svm code
prange->svm_bo unref can happen in both mmu callback and a callback after
migrate to system ram. Both are async call in different tasks. Sync svm_bo
unref operation to avoid random "use-after-free".
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/50f35a907c4f9ed431fd3dbb8b871ef1cbb0718ehttps://git.kernel.org/stable/c/709c348261618da7ed89d6c303e2ceb9e453ba74https://git.kernel.org/stable/c/7d43cdd22cd81a2b079e864c4321b9aba4c6af34https://git.kernel.org/stable/c/c772eacbd6d0845fc922af8716bb9d29ae27b8cfhttps://git.kernel.org/stable/c/fc0210720127cc6302e6d6f3de48f49c3fcf5659