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
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linux-image-generic-64kUpgrade linux-image-oracle-64kUpgrade linux-image-azure-fdeUpgrade linux-image-gcp-64kUpgrade linux-image-raspiUpgrade linux-image-6.11.0-1014-lowlatency-64kUpgrade linux-image-6.11.0-1016-oracleUpgrade linux-image-gcpUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-azureUpgrade linux-image-awsUpgrade linux-image-realtimeUpgrade linux-image-virtualUpgrade linux-image-6.11.0-1014-lowlatencyUpgrade linux-image-6.11.0-1022-oemUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.11.0-1015-gcp-64kUpgrade linux-image-6.11.0-1010-realtimeUpgrade linux-image-genericUpgrade linux-image-6.11.0-1014-awsUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.11.0-1015-azureUpgrade linux-image-oracleUpgrade linux-image-oem-24.04bUpgrade linux-image-6.11.0-1016-oracle-64kUpgrade linux-image-6.11.0-26-genericUpgrade linux-image-6.11.0-1013-raspiUpgrade linux-image-6.11.0-26-generic-64kUpgrade linux-image-6.11.0-1015-azure-fdeUpgrade linux-image-6.11.0-1015-gcpUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-lowlatency | May 21, 2025 | Feb 27, 2025 |
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