Use After Free The advisory has been revoked - it doesn't affect any version of package bpftool (opens in a new tab)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-CENTOS9-BPFTOOL-8851309
- published28 Feb 2025
- disclosed31 Jan 2025
Introduced: 31 Jan 2025
CVE-2025-21671 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Centos.
In the Linux kernel, the following vulnerability has been resolved:
zram: fix potential UAF of zram table
If zram_meta_alloc failed early, it frees allocated zram->table without setting it NULL. Which will potentially cause zram_meta_free to access the table if user reset an failed and uninitialized device.
References
- https://access.redhat.com/security/cve/CVE-2025-21671
- https://git.kernel.org/stable/c/212fe1c0df4a150fb6298db2cfff267ceaba5402
- https://git.kernel.org/stable/c/571d3f6045cd3a6d9f6aec33b678f3ffe97582ef
- https://git.kernel.org/stable/c/902ef8f16d5ca77edc77c30656be54186c1e99b7
- https://git.kernel.org/stable/c/fe3de867f94819ba0f28e035c0b0182150147d95
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html