CVE-2026-43274
8.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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().
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | e4b1d67e71419c4af581890ecea84b04920d4116 < 95438699c92947155823dcd3918049a07f3cd867 | affected |
| Linux | Linux | e4b1d67e71419c4af581890ecea84b04920d4116 < 0442b6229e2eedc95a6d3d18ce75dec7f5b5377c | affected |
| Linux | Linux | e4b1d67e71419c4af581890ecea84b04920d4116 < f7c330a8c83c9b0332fd524097eaf3e69148164d | affected |
| Linux | Linux | 6.14 | affected |
| Linux | Linux | 0 < 6.14 | unaffected |
| Linux | Linux | 6.18.16 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.6 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/95438699c92947155823dcd3918049a07f3cd867
- https://git.kernel.org/stable/c/0442b6229e2eedc95a6d3d18ce75dec7f5b5377c
- https://git.kernel.org/stable/c/f7c330a8c83c9b0332fd524097eaf3e69148164d
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