CVE-2026-92515 (GCVE-0-2026-92515)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-10-19 09:04
VLAI
Title
bpf: Preserve unique-field state across nested structs
Summary
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 64e8ee814819f21beeeda00d4119221443d77992 , < cec97102d4147e18568c93946014c4c8ebf86fcf (git)
Affected: 64e8ee814819f21beeeda00d4119221443d77992 , < 28d5f20ed022ade0fb0bfbf50b78fec782083175 (git)
Affected: 64e8ee814819f21beeeda00d4119221443d77992 , < 373a1e9366e711b89bc5e45bd6edf33ef62402cd (git)
Affected: 64e8ee814819f21beeeda00d4119221443d77992 , < f08619f060468076e4acbdc10e0713af20d60e65 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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        "metrics": {},
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}



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