CVE-2024-46709

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/vmwgfx: Fix prime with external buffers

Make sure that for external buffers mapping goes through the dma_buf interface instead of trying to access pages directly.

External buffers might not provide direct access to readable/writable pages so to make sure the bo's created from external dma_bufs can be read dma_buf interface has to be used.

Fixes crashes in IGT's kms_prime with vgem. Regular desktop usage won't trigger this due to the fact that virtual machines will not have multiple GPUs but it enables better test coverage in IGT.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux65674218b43f2dd54587ab2b06560e17c30d8b41 < 9a9716bbbf3dd6b6cbefba3abcc89af8b72631f4affected
LinuxLinuxb32233accefff1338806f064fb9b62cf5bc0609f < 5c12391ee1ab59cb2f3be3f1f5e6d0fc0c2dc854affected
LinuxLinuxb32233accefff1338806f064fb9b62cf5bc0609f < 50f1199250912568606b3778dc56646c10cb7b04affected
LinuxLinux2cdb71c975a10b8774fcd199f16f9ea88948de50affected
LinuxLinux6.6.29 < 6.6.49affected
LinuxLinux6.8.8 < 6.9affected
LinuxLinux6.9affected
LinuxLinux0 < 6.9unaffected
LinuxLinux6.6.49 <= 6.6.*unaffected
LinuxLinux6.10.8 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References