CVE-2022-48932: net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-08-22 · updated 2026-08-04
Weakness: CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte When adding a rule with 32 destinations, we hit the following out-of-band access issue: BUG: KASAN: slab-out-of-bounds in mlx5_cmd_dr_create_fte+0x18ee/0x1e70 This patch fixes the issue by both increasing the allocated buffers to accommodate for the needed actions and by checking the number of actions to prevent this issue when a rule with too many actions is provided.

Affected products

Linux kernel: from 5.16 before 5.16.12 — fixed in 5.16.12

How to fix

Upgrade to a fixed version: Linux kernel 5.16.12. Check the vendor advisory for mitigations.

References

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