CVE-2024-46692: firmware: qcom: scm: Mark get_wq_ctx() as atomic call
First published: Fri Sep 13 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=6.3<6.6.49 | |
| Linux Linux kernel | >=6.7<6.10.8 | |
| Linux Linux kernel | =6.11-rc1 | |
| Linux Linux kernel | =6.11-rc2 | |
| Linux Linux kernel | =6.11-rc3 | |
| Linux Linux kernel | =6.11-rc4 | |
| Linux Linux kernel | =6.11-rc5 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/9960085a3a82c58d3323c1c20b991db6045063b0
- https://git.kernel.org/stable/c/cdf7efe4b02aa93813db0bf1ca596ad298ab6b06
- https://git.kernel.org/stable/c/e40115c33c0d79c940545b6b12112aace7acd9f5
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46692
- https://nvd.nist.gov/vuln/detail/CVE-2024-46692
- https://launchpad.net/bugs/cve/CVE-2024-46692
- https://security-tracker.debian.org/tracker/CVE-2024-46692
- https://ubuntu.com/security/CVE-2024-46692
- https://git.kernel.org/linus/9960085a3a82c58d3323c1c20b991db6045063b0
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