Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchp_ipc_get_cluster_aggr_irq() The cluster_cfg array is dynamically allocated to hold per-CPU configuration structures, with its size based on the number of online CPUs. Previously, this array was indexed using hartid, which may be non-contiguous or exceed the bounds of the array, leading to out-of-bounds access. Switch to using cpuid as the index, as it is guaranteed to be within the valid range provided by for_each_online_cpu().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.14, < 6.18.16 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0442b6229e2eedc95a6d3d18ce75dec7f5b5377cPatch
- https://git.kernel.org/stable/c/95438699c92947155823dcd3918049a07f3cd867Patch
- https://git.kernel.org/stable/c/f7c330a8c83c9b0332fd524097eaf3e69148164dPatch
FAQ
What is CVE-2026-43274?
CVE-2026-43274 is a vulnerability with a CVSS score of 8.4 (HIGH). In the Linux kernel, the following vulnerability has been resolved: mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchp_ipc_get_cluster_aggr_irq() The cluster_cfg array is dynamically allocated ...
How severe is CVE-2026-43274?
CVE-2026-43274 has been rated HIGH with a CVSS base score of 8.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43274?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.