Expected Behavior Violation The advisory has been revoked - it doesn't affect any version of package libperf (opens in a new tab)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-16929387
- published28 May 2026
- disclosed27 May 2026
Introduced: 27 May 2026
CVE-2026-46071 (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:
KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12
svm_copy_lbrs() always marks VMCB_LBR dirty in the destination VMCB. However, nested_svm_vmexit() uses it to copy LBRs to vmcb12, and clearing clean bits in vmcb12 is not architecturally defined.
Move vmcb_mark_dirty() to callers and drop it for vmcb12.
This also facilitates incoming refactoring that does not pass the entire VMCB to svm_copy_lbrs().
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2482050
- https://access.redhat.com/security/cve/CVE-2026-46071
- https://git.kernel.org/stable/c/9efe23568806d1cd06f7d146f9b3037b8d585a9f
- https://git.kernel.org/stable/c/a3f0981a5a0e0bd51ad74cc7d9eed32294b24002
- https://git.kernel.org/stable/c/b53ab5167a81537777ac780bbd93d32613aa3bda
- https://git.kernel.org/stable/c/11d347b7edf5093d69aca72317300798a32bfd6b
- https://git.kernel.org/stable/c/165b08d2d1346dce5ed43db65e10f3194b9ae2fe
- https://git.kernel.org/stable/c/b7fefb393a926bdfe445c63b4091185ed7da2733