Description

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.

Classification

CVE ID: CVE-2024-43864

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.07% (probability of being exploited)

EPSS Percentile: 21.69% (scored less or equal to compared to others)

EPSS Date: 2025-05-05 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: partial

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2024-43864
https://git.kernel.org/stable/c/daab2cc17b6b6ab158566bba037e9551fd432b59
https://git.kernel.org/stable/c/89064d09c56b44c668509bf793c410484f63f5ad
https://git.kernel.org/stable/c/025f2b85a5e5a46df14ecf162c3c80a957a36d0b

Timeline