CVE-2026-92515
CVE CVE-2026-92515EUVD EUVD-2026-82136Published 2026-09-17T16:10:24.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.3-rc1; 64e8ee814819f21beeeda00d4119221443d77992 <cec97102d4147e18568c93946014c4c8ebf86fcf; patch: 7.2.6; patch: 6.12.110; 6.11; 64e8ee814819f21beeeda00d4119221443d77992 <f08619f060468076e4acbdc10e0713af20d60e65; 64e8ee814819f21beeeda00d4119221443d77992 <28d5f20ed022ade0fb0bfbf50b78fec782083175; 64e8ee814819f21beeeda00d4119221443d77992 <373a1e9366e711b89bc5e45bd6edf33ef62402cd; patch: 0; patch: 6.18.52
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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