Access of Uninitialized Pointer The advisory has been revoked - it doesn't affect any version of package perf (opens in a new tab)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-CENTOS10-PERF-16473459
- published7 May 2026
- disclosed6 May 2026
Introduced: 6 May 2026
CVE-2026-43272 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Centos.
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Fix possible dereference of uninitialized pointer
There is a pointer head_page in rb_meta_validate_events() which is not initialized at the beginning of a function. This pointer can be dereferenced if there is a failure during reader page validation. In this case the control is passed to "invalid" label where the pointer is dereferenced in a loop.
To fix the issue initialize orig_head and head_page before calling rb_validate_buffer.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2467127
- https://access.redhat.com/security/cve/CVE-2026-43272
- https://git.kernel.org/stable/c/bc77986f3cb7476637052edf2d87137fa39f153d
- https://git.kernel.org/stable/c/d9942396845fef2369478c157b26738fe07142f6
- https://git.kernel.org/stable/c/f1547779402c4cd67755c33616b7203baa88420b
- https://git.kernel.org/stable/c/a4afdff9c715af50cf6c3f2dc601932c2cea17a2