cilium eBPF int overflow in LoadCollectionSpec before 0.21.0
CVE-2026-10722 Published on June 3, 2026
cilium ebpf LoadCollectionSpec/LoadCollectionSpecFromReader btf.go loadRawSpec integer overflow
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.
Timeline
Advisory disclosed
VulDB entry created
VulDB entry last update
Weakness Types
Integer Overflow or Wraparound
The software 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 can introduce other weaknesses when the calculation is used for resource management or execution control. An integer overflow or wraparound 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 wrap to become a very small or negative number. While this may be intended behavior in circumstances that rely on wrapping, it can have security consequences if the wrap is unexpected. This is especially the case if the integer overflow can be triggered using user-supplied inputs. This becomes security-critical when the result is used to control looping, make a security decision, or determine the offset or size in behaviors such as memory allocation, copying, concatenation, etc.
Numeric Errors
Weaknesses in this category are related to improper calculation or conversion of numbers.
Products Associated with CVE-2026-10722
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Affected Versions
cilium ebpf:- Version 0.1 is affected.
- Version 0.2 is affected.
- Version 0.3 is affected.
- Version 0.4 is affected.
- Version 0.5 is affected.
- Version 0.6 is affected.
- Version 0.7 is affected.
- Version 0.8 is affected.
- Version 0.9 is affected.
- Version 0.10 is affected.
- Version 0.11 is affected.
- Version 0.12 is affected.
- Version 0.13 is affected.
- Version 0.14 is affected.
- Version 0.15 is affected.
- Version 0.16 is affected.
- Version 0.17 is affected.
- Version 0.18 is affected.
- Version 0.19 is affected.
- Version 0.20 is affected.
- Version 0.21.0 is affected.