Answer in brief
CVE-2026-98937 records a Unknown severity vulnerability in perf/core: Check kernel access when kernel callchains are requested. The current sources do not mark it as known exploited. The current feed maps 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <132bee76097be421ab3012130b5b506324cf2be1 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2581b43e162cfc43e6f5d8dd8d2b38f3441550de || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6e187281f978a2bff98ead6aa40f8ddc9a2c9afb || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a4573a3838ae4fc73b70019cfa1dac9aaea7cc2f || >=0 <6.12.113 || >=0 <6.18.56 || >=0 <7.2.10 | 132bee76097be421ab3012130b5b506324cf2be1, 2581b43e162cfc43e6f5d8dd8d2b38f3441550de, 6e187281f978a2bff98ead6aa40f8ddc9a2c9afb, a4573a3838ae4fc73b70019cfa1dac9aaea7cc2f, 6.12.113, 6.18.56, 7.2.10 |
Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 23, 2026
In the Linux kernel, the following vulnerability has been resolved: perf/core: Check kernel access when kernel callchains are requested perf_event_open() currently gates perf_allow_kernel() only on !attr.exclude_kernel. However, users can still request kernel callchain collection with attr.exclude_callchain_kernel == 0 even when attr.exclude_kernel == 1. That still requires kernel profiling privilege, but the existing check does not enforce it. Update the permission check to call perf_allow_kernel() when either kernel sampling is requested or kernel callchains are requested. This keeps permission checks aligned with requested data and prevents unprivileged use of kernel callchain capture.
Quoted source text, attributed separately from HOL analysis.