CVE-2024-46692

Summary

In the Linux kernel, the following vulnerability has been resolved:

firmware: qcom: scm: Mark get_wq_ctx() as atomic call

Currently get_wq_ctx() is wrongly configured as a standard call. When two SMC calls are in sleep and one SMC wakes up, it calls get_wq_ctx() to resume the corresponding sleeping thread. But if get_wq_ctx() is interrupted, goes to sleep and another SMC call is waiting to be allocated a waitq context, it leads to a deadlock.

To avoid this get_wq_ctx() must be an atomic call and can't be a standard SMC call. Hence mark get_wq_ctx() as a fast call.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6bf32599223634294cdc6efb359ffaab1d68073c < cdf7efe4b02aa93813db0bf1ca596ad298ab6b06affected
LinuxLinux6bf32599223634294cdc6efb359ffaab1d68073c < e40115c33c0d79c940545b6b12112aace7acd9f5affected
LinuxLinux6bf32599223634294cdc6efb359ffaab1d68073c < 9960085a3a82c58d3323c1c20b991db6045063b0affected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.6.49 <= 6.6.*unaffected
LinuxLinux6.10.8 <= 6.10.*unaffected
LinuxLinux6.11 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References