CVE-2026-74717 - net/mlx5: fw_tracer, return NULL on create error
Brief
CVE ID : CVE-2026-74717
Published : Aug. 22, 2026, 4:16 p. m.
- 4 hours, 54 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: fw_tracer, return NULL on create error
Tracer creation can fail by returning either NULL or ERR_PTR. The return value is stored without a check on the device, and users treat ERR_PTR and NULL the same way. This also causes a crash in the core dump logic, which is missing the ERR_PTR check and ends up dereferencing it, as shown in the trace below.
Switch tracer creation to return NULL on failure only, so callers only need a single NULL check.