5.5

CVE-2024-57985

firmware: qcom: scm: Cleanup global '__scm' on probe failures

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
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.11 < 6.12.13
Linux ≫ Linux Kernel Version >= 6.13 < 6.13.2
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.19% 0.089
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/1e76b546e6fca7eb568161f408133904ca6bcf4f
Patch
https://git.kernel.org/stable/c/390d3baeba51a126f75c97b90ec28b9384ce4b84
Patch
https://git.kernel.org/stable/c/faf1715798fe72b79e4432ce8c6d03ca69765425
Patch