Description
In the Linux kernel, the following vulnerability has been resolved:
firmware: qcom: scm: Cleanup global '__scm' on probe failures
If SCM driver fails the probe, it should not leave global '__scm' variable assigned, because external users of this driver will assume the probe finished successfully. For example TZMEM parts ('__scm->mempool') are initialized later in the probe, but users of it (__scm_smc_call()) rely on the '__scm' variable.
This fixes theoretical NULL pointer exception, triggered via introducing probe deferral in SCM driver with call trace:
qcom_tzmem_alloc+0x70/0x1ac (P) qcom_tzmem_alloc+0x64/0x1ac (L) qcom_scm_assign_mem+0x78/0x194 qcom_rmtfs_mem_probe+0x2d4/0x38c platform_probe+0x68/0xc8
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 40289e35ca525f29a03989352ab207b6a9675475, < 390d3baeba51a126f75c97b90ec28b9384ce4b84; >= 40289e35ca525f29a03989352ab207b6a9675475, < faf1715798fe72b79e4432ce8c6d03ca69765425; >= 40289e35ca525f29a03989352ab207b6a9675475, < 1e76b546e6fca7eb568161f408133904ca6bcf4f |
| Linux | Linux | 6.11 |
References
Timeline
- Published
- Feb 27, 2025
- Last modified
- Oct 15, 2026
- NVD status
- Modified