Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: arm64/gcs: Fix error handling in arch_set_shadow_stack_status() alloc_gcs() returns an error-encoded pointer on failure, which comes from do_mmap(), not NULL. The current NULL check fails to detect errors, which could lead to using an invalid GCS address. Use IS_ERR_VALUE() to properly detect errors, consistent with the check in gcs_alloc_thread_stack().
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.13, < 6.18.14 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/53c998527ffa60f9deda8974a11ad39790684159Patch
- https://git.kernel.org/stable/c/a4741114c9622346c4bbb8cc2bbd88153616ffafPatch
- https://git.kernel.org/stable/c/c787a235deb33be6eda40beee8f561da5fd8cb8cPatch
FAQ
What is CVE-2026-45876?
CVE-2026-45876 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: arm64/gcs: Fix error handling in arch_set_shadow_stack_status() alloc_gcs() returns an error-encoded pointer on failure, which com...
How severe is CVE-2026-45876?
CVE-2026-45876 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-2026-45876?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.