CVE-2024-46710

Summary

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

drm/vmwgfx: Prevent unmapping active read buffers

The kms paths keep a persistent map active to read and compare the cursor buffer. These maps can race with each other in simple scenario where: a) buffer "a" mapped for update b) buffer "a" mapped for compare c) do the compare d) unmap "a" for compare e) update the cursor f) unmap "a" for update At step "e" the buffer has been unmapped and the read contents is bogus.

Prevent unmapping of active read buffers by simply keeping a count of how many paths have currently active maps and unmap only when the count reaches 0.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux485d98d472d53f9617ffdfba5e677ac29ad4fe20 < 58a3714db4d9dcaeb9fc4905141e17b9f536c0a5affected
LinuxLinux485d98d472d53f9617ffdfba5e677ac29ad4fe20 < 0851b1ec650adadcaa23ec96daad95a55bf966f0affected
LinuxLinux485d98d472d53f9617ffdfba5e677ac29ad4fe20 < d5228d158e4c0b1663b3983044913c15c3d0135eaffected
LinuxLinux485d98d472d53f9617ffdfba5e677ac29ad4fe20 < aba07b9a0587f50e5d3346eaa19019cf3f86c0eaaffected
LinuxLinux5.19affected
LinuxLinux0 < 5.19unaffected
LinuxLinux6.1.113 <= 6.1.*unaffected
LinuxLinux6.6.54 <= 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

CVE Program Container

Additional References

References