CVE-2026-92515bpf: Preserve unique-field state across nested structs
- —Not scoredno CVSS score yet
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 32 days later
· 32 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 64e8ee814819f21beeeda00d4119221443d77992 – < cec97102d4147e18568c93946014c4c8ebf86fcf
- affected 64e8ee814819f21beeeda00d4119221443d77992 – < 28d5f20ed022ade0fb0bfbf50b78fec782083175
- affected 64e8ee814819f21beeeda00d4119221443d77992 – < 373a1e9366e711b89bc5e45bd6edf33ef62402cd
- affected 64e8ee814819f21beeeda00d4119221443d77992 – < f08619f060468076e4acbdc10e0713af20d60e65
- affected 6.11
- unaffected < 6.11
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/cec97102d4147e18568c93946014c4c8ebf86fcf (opens in a new tab)
- https://git.kernel.org/stable/c/28d5f20ed022ade0fb0bfbf50b78fec782083175 (opens in a new tab)
- https://git.kernel.org/stable/c/373a1e9366e711b89bc5e45bd6edf33ef62402cd (opens in a new tab)
- https://git.kernel.org/stable/c/f08619f060468076e4acbdc10e0713af20d60e65 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-82136 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-92515)Record last updated .