Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: firmware: qcom: scm: Fix missing read barrier in qcom_scm_get_tzmem_pool() Commit 2e4955167ec5 ("firmware: qcom: scm: Fix __scm and waitq completion variable initialization") introduced a write barrier in probe function to store global '__scm' variable. We all known barriers are paired (see memory-barriers.txt: "Note that write barriers should normally be paired with read or address-dependency barriers"), therefore accessing it from concurrent contexts requires read barrier. Previous commit added such barrier in qcom_scm_is_available(), so let's use that directly. Lack of this read barrier can result in fetching stale '__scm' variable value, NULL, and dereferencing it. Note that barrier in qcom_scm_is_available() satisfies here the control dependency.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.11, <= 6.12.14 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/b628510397b5cafa1f5d3e848a28affd1c635302Patch
- https://git.kernel.org/stable/c/e03db7c1255ebabba5e1a447754faeb138de15a2Patch
- https://git.kernel.org/stable/c/fee921e3c641f64185abee83f9a6e65f0b380682Patch
FAQ
What is CVE-2024-58084?
CVE-2024-58084 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: firmware: qcom: scm: Fix missing read barrier in qcom_scm_get_tzmem_pool() Commit 2e4955167ec5 ("firmware: qcom: scm: Fix __scm an...
How severe is CVE-2024-58084?
CVE-2024-58084 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-58084?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.