Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: x86/fred: Correct speculative safety in fred_extint() array_index_nospec() is no use if the result gets spilled to the stack, as it makes the believed safe-under-speculation value subject to memory predictions. For all practical purposes, this means array_index_nospec() must be used in the expression that accesses the array. As the code currently stands, it's the wrong side of irqentry_enter(), and 'index' is put into %ebp across the function call. Remove the index variable and reposition array_index_nospec(), so it's calculated immediately before the array access.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.9.1, < 6.12.77 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3bc5887b0a2b06d2d9c22f1f4f8500490b3ae643Patch
- https://git.kernel.org/stable/c/92caa5274b99cb6729177232a029ce0dfa6c5f7bPatch
- https://git.kernel.org/stable/c/aa280a08e7d8fae58557acc345b36b3dc329d595Patch
- https://git.kernel.org/stable/c/e58f1a9b0677de24dcfee0b21393446ec92ff120Patch
FAQ
What is CVE-2026-23354?
CVE-2026-23354 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: x86/fred: Correct speculative safety in fred_extint() array_index_nospec() is no use if the result gets spilled to the stack, as i...
How severe is CVE-2026-23354?
CVE-2026-23354 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23354?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.