Missing Handler The advisory has been revoked - it doesn't affect any version of package perf (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-PERF-20923804
- published14 Oct 2026
- disclosed17 Sept 2026
Introduced: 17 Sep 2026
CVE-2026-90306 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
ARM: 9481/2: breakpoint: CFI breakpoints only on demand
This removes the stub hw_breakpoint_cfi_handler() from ARM, making it not steal breakpoint type 0x03 (ARM_ENTRY_CFI_BREAKPOINT) unless CFI is actively used in the kernel.
When not instrumenting with CFI, or when a breakpoint is issued in userspace, we fall through to return 1 from hw_breakpoint_pending() "unhandled fault" so userspace can make use of this breakpoint.
Tested with LKDTM and this command line: echo CFI_FORWARD_PROTO > /sys/kernel/debug/provoke-crash/DIRECT still works as expected.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2536709
- https://access.redhat.com/security/cve/CVE-2026-90306
- https://git.kernel.org/stable/c/22107402c2669b0163d43cc68901a2c4a59fa43a
- https://git.kernel.org/stable/c/314f1a6762b5d51b37784ed7dc701d4c3d893703
- https://git.kernel.org/stable/c/8ed9bff906cf8036531d1559f10e82733a52b41f
- https://git.kernel.org/stable/c/da64b150e4b7bee615b33ab21f3137c31ec36922