CVE-2024-43864

Summary

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

net/mlx5e: Fix CT entry update leaks of modify header context

The cited commit allocates a new modify header to replace the old one when updating CT entry. But if failed to allocate a new one, eg. exceed the max number firmware can support, modify header will be an error pointer that will trigger a panic when deallocating it. And the old modify header point is copied to old attr. When the old attr is freed, the old modify header is lost.

Fix it by restoring the old attr to attr when failed to allocate a new modify header context. So when the CT entry is freed, the right modify header context will be freed. And the panic of accessing error pointer is also fixed.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux94ceffb48eac7692677d8093dcde6965b70c4b35 < daab2cc17b6b6ab158566bba037e9551fd432b59affected
LinuxLinux94ceffb48eac7692677d8093dcde6965b70c4b35 < 89064d09c56b44c668509bf793c410484f63f5adaffected
LinuxLinux94ceffb48eac7692677d8093dcde6965b70c4b35 < 025f2b85a5e5a46df14ecf162c3c80a957a36d0baffected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.6.45 <= 6.6.*unaffected
LinuxLinux6.10.4 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

References