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Improper Validation of Specified Type of Input The advisory has been revoked - it doesn't affect any version of package libperf  (opens in a new tab)

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EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-CENTOS10-LIBPERF-22124378
  • published2 Nov 2026
  • disclosed3 Sept 2026
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Introduced: 3 Sep 2026

CVE-2026-80738  (opens in a new tab)
CWE-1287  (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 libperf package and not the libperf package as distributed by Centos.

In the Linux kernel, the following vulnerability has been resolved:

bpf: Check sk_state before sk_protocol in bpf_tcp_*_syncookie

bpf_tcp_gen_syncookie and bpf_tcp_check_syncookie accept a socket pointer 'sk' with argument type ARG_PTR_TO_BTF_ID_SOCK_COMMON. However, they access sk->sk_protocol without validating whether 'sk' represents a full socket.

Fix this issue by checking sk->sk_state != TCP_LISTEN before inspecting sk->sk_protocol in both bpf_tcp_gen_syncookie and bpf_tcp_check_syncookie. Since mini-sockets are never in the TCP_LISTEN state, the condition short-circuits and prevents dereferencing fullsock-specific fields.