CVE-2026-10722: cilium ebpf LoadCollectionSpec/LoadCollectionSpecFromReader btf.go loadRawSpec integer overflow

Vulnerability summary

CVE-2026-10722 is a medium (CVSS 5.5) Numeric Errors vulnerability in cilium ebpf. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.4% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 03-06-2026
   PublishedVulnerability first disclosed.
2. 03-06-2026
   Last modifiedVulnerability information updated.

Description

A vulnerability has been found in cilium ebpf up to 0.21.0. This affects the function loadRawSpec of the file btf/btf.go of the component LoadCollectionSpec/LoadCollectionSpecFromReader. Such manipulation of the argument offset leads to integer overflow. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The name of the patch is 533dfc82fd228bfadf42ea7180c39de7d9af47fa. A patch should be applied to remediate this issue.

• CWE-189Numeric ErrorsWeaknesses in this category are related to improper calculation or conversion of numbers.
• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.