Linux Kernel Vulnerability in AMD GPU Driver
CVE-2025-40339
What is CVE-2025-40339?
A vulnerability in the Linux kernel’s AMD GPU driver can lead to null pointer dereference issues during memory management. Specifically, if an amdgpu_bo_va is linked to fpriv->prt_va, it will consistently point to NULL. This mismanagement necessitates that such amdgpu_bo_va instances be updated distinctly prior to executing amdgpu_vm_handle_moved, or risk system instability. Security measures should be reviewed to mitigate potential attacks exploiting this flaw.
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Affected Version(s)
Linux d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 47281febebe337586569aa4c5694a7511063a42e
Linux d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 273d1ea12e42e9babb9783837906f3c466f213d3
Linux d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 859958a7faefe5b7742b7b8cdbc170713d4bf158