CVE-2024-26912

Summary

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

drm/nouveau: fix several DMA buffer leaks

Nouveau manages GSP-RM DMA buffers with nvkm_gsp_mem objects. Several of these buffers are never dealloced. Some of them can be deallocated right after GSP-RM is initialized, but the rest need to stay until the driver unloads.

Also futher bullet-proof these objects by poisoning the buffer and clearing the nvkm_gsp_mem object when it is deallocated. Poisoning the buffer should trigger an error (or crash) from GSP-RM if it tries to access the buffer after we've deallocated it, because we were wrong about when it is safe to deallocate.

Finally, change the mem->size field to a size_t because that's the same type that dma_alloc_coherent expects.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux176fdcbddfd288408ce8571c1760ad618d962096 < 6190d4c08897d748dd25f0b78267a90aa1694e15affected
LinuxLinux176fdcbddfd288408ce8571c1760ad618d962096 < 042b5f83841fbf7ce39474412db3b5e4765a7ea7affected
LinuxLinux6.7affected
LinuxLinux0 < 6.7unaffected
LinuxLinux6.7.6 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References