CVE-2026-43274
mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchp_ipc_get_cluster_aggr_irq()
CVSS Score
8.4
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 6, 2026 |
| Last Updated | May 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
e4b1d67e71419c4af581890ecea84b04920d4116 < 95438699c92947155823dcd3918049a07f3cd867 e4b1d67e71419c4af581890ecea84b04920d4116 < 0442b6229e2eedc95a6d3d18ce75dec7f5b5377c e4b1d67e71419c4af581890ecea84b04920d4116 < f7c330a8c83c9b0332fd524097eaf3e69148164d
Linux / Linux
6.14