Answer in brief
CVE-2026-43274 records a Unknown severity vulnerability in mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchp_ipc_get_cluster_aggr_irq(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e4b1d67e71419c4af581890ecea84b04920d4116 <95438699c92947155823dcd3918049a07f3cd867 || >=e4b1d67e71419c4af581890ecea84b04920d4116 <0442b6229e2eedc95a6d3d18ce75dec7f5b5377c || >=e4b1d67e71419c4af581890ecea84b04920d4116 <f7c330a8c83c9b0332fd524097eaf3e69148164d | 95438699c92947155823dcd3918049a07f3cd867, 0442b6229e2eedc95a6d3d18ce75dec7f5b5377c, f7c330a8c83c9b0332fd524097eaf3e69148164d |
| Linux/Linuxgeneric | 6.14 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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().
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-43274 records a Unknown severity vulnerability in mailbox: mchp-ipc-sbi: fix out-of-bounds access in mchp_ipc_get_cluster_aggr_irq(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e4b1d67e71419c4af581890ecea84b04920d4116 <95438699c92947155823dcd3918049a07f3cd867 || >=e4b1d67e71419c4af581890ecea84b04920d4116 <0442b6229e2eedc95a6d3d18ce75dec7f5b5377c || >=e4b1d67e71419c4af581890ecea84b04920d4116 <f7c330a8c83c9b0332fd524097eaf3e69148164d | 95438699c92947155823dcd3918049a07f3cd867, 0442b6229e2eedc95a6d3d18ce75dec7f5b5377c, f7c330a8c83c9b0332fd524097eaf3e69148164d |
| Linux/Linuxgeneric | 6.14 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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().
Quoted source text, attributed separately from HOL analysis.