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
Affected Vendors & Products
References
History
Fri, 28 Feb 2025 02:00:00 +0000
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cvssV3_1
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Thu, 27 Feb 2025 02:15:00 +0000
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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 | |
Title | firmware: qcom: scm: Cleanup global '__scm' on probe failures | |
References |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-02-27T02:07:09.983Z
Updated: 2025-05-04T10:07:44.660Z
Reserved: 2025-02-27T02:04:28.913Z
Link: CVE-2024-57985

No data.

Status : Received
Published: 2025-02-27T02:15:11.703
Modified: 2025-02-27T02:15:11.703
Link: CVE-2024-57985
