PT-2026-64574 · Linux · Linux

CVE-2026-64353 · Publicado 2026-07-25 · Atualizado 2026-07-25

Mitre

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

bpf: Keep dynamic inner array lookups nullable

An ARRAY OF MAPS can use an array created with BPF F INNER MAP as its inner map template. A concrete inner array with a different max entries value can then replace the template.

After a successful outer map lookup, the verifier represents the resulting map pointer using the inner map template. Const-key lookup nullness elision consequently uses the template max entries even though the runtime helper uses the concrete inner map max entries.

Do not elide lookup result nullness for maps marked with BPF F INNER MAP, because the template max entries does not prove that the key is in bounds for the concrete runtime map.

Identificadores relacionados

CVE-2026-64353

Produtos afetados

Linux

Referências · 4

• https://git.kernel.org/stable/c/0b92ad64d6e4bde85e6b9888404f9a7a2b65d269 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-64353 · Nota de Segurança
• https://git.kernel.org/stable/c/53040a81ae57cdca8af8ac36fe4e661730cf7c6b · Nota
• https://git.kernel.org/stable/c/d57db0d975053e01410c54e708a85b6d32ef2ebd · Nota