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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().

PUBLISHED Reserved 2026-05-01 | Published 2026-05-06 | Updated 2026-05-08 | Assigner Linux




HIGH: 8.4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Product status

Default status
unaffected

e4b1d67e71419c4af581890ecea84b04920d4116 (git) before 95438699c92947155823dcd3918049a07f3cd867
affected

e4b1d67e71419c4af581890ecea84b04920d4116 (git) before 0442b6229e2eedc95a6d3d18ce75dec7f5b5377c
affected

e4b1d67e71419c4af581890ecea84b04920d4116 (git) before f7c330a8c83c9b0332fd524097eaf3e69148164d
affected

Default status
affected

6.14
affected

Any version before 6.14
unaffected

6.18.16 (semver)
unaffected

6.19.6 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/95438699c92947155823dcd3918049a07f3cd867

git.kernel.org/...c/0442b6229e2eedc95a6d3d18ce75dec7f5b5377c

git.kernel.org/...c/f7c330a8c83c9b0332fd524097eaf3e69148164d

cve.org (CVE-2026-43274)

nvd.nist.gov (CVE-2026-43274)

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