Detection of Error Condition Without Action The advisory has been revoked - it doesn't affect any version of package libperf (opens in a new tab)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-LIBPERF-15293701
- published17 Feb 2026
- disclosed14 Feb 2026
Introduced: 14 Feb 2026
CVE-2026-23156 (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 libperf package and not the libperf package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
efivarfs: fix error propagation in efivar_entry_get()
efivar_entry_get() always returns success even if the underlying __efivar_entry_get() fails, masking errors.
This may result in uninitialized heap memory being copied to userspace in the efivarfs_file_read() path.
Fix it by returning the error from __efivar_entry_get().
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2439951
- https://access.redhat.com/security/cve/CVE-2026-23156
- https://access.redhat.com/errata/RHSA-2026:4012
- https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42
- https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995
- https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8
- https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8
- https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16