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CVE-2026-98937

unscored exploit Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Public exploits 1

Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.

Change history 5

  1. StatusReceived → PublishedNVD modified 2026-10-26 06:56
  2. StatusPublished → ReceivedNVD modified 2026-10-26 07:17
  3. StatusReceived → PublishedNVD modified 2026-10-23 12:11
  4. StatusPublished → ReceivedNVD modified 2026-10-23 13:17
  5. First seenunscored · linuxNVD modified 2026-10-23 12:11

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4