CVE-2026-92515: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve unique-field state across nested structs btf_find_struct_field() initializes a fresh seen mask for every recursive descent. Unique special fields in different levels of the same aggregate therefore do not see one another. The duplicate fields can reach btf_parse_fields(), where they trigger an invariant WARN_ON_ONCE(). A crafted user BTF can consequently trigger the warning before map creation checks capabilities. Initialize the seen mask once in btf_find_field() and pass the same pointer through struct, datasec, and nested-struct walks. This gives the entire field traversal one shared uniqueness state.

Засегнати продукти

• Linux Linux: 64e8ee814819f21beeeda00d4119221443d77992 преди cec97102d4147e18568c93946014c4c8ebf86fcf; 64e8ee814819f21beeeda00d4119221443d77992 преди 28d5f20ed022ade0fb0bfbf50b78fec782083175; 64e8ee814819f21beeeda00d4119221443d77992 преди 373a1e9366e711b89bc5e45bd6edf33ef62402cd; 64e8ee814819f21beeeda00d4119221443d77992 преди f08619f060468076e4acbdc10e0713af20d60e65
• Linux Linux: 6.11; преди 6.11; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-92515
• https://nvd.nist.gov/vuln/detail/CVE-2026-92515
• https://git.kernel.org/stable/c/cec97102d4147e18568c93946014c4c8ebf86fcf
• https://git.kernel.org/stable/c/28d5f20ed022ade0fb0bfbf50b78fec782083175
• https://git.kernel.org/stable/c/373a1e9366e711b89bc5e45bd6edf33ef62402cd
• https://git.kernel.org/stable/c/f08619f060468076e4acbdc10e0713af20d60e65