Answer in brief
CVE-2026-68125 records a High severity (CVSS 8.8) vulnerability in mac802154: llsec: reject frames shorter than the authentication tag. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <5bbf0cd9b6a7076af86c75e87e180099be2e11ae || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <de80808f37d99c6dc67bb6f97eea00c8f57a8821 || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <f20dedce0429b293d4bad604e0d3f65d8ac96c83 || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <e09e0301d616c1ef38a5e64e8e4326fd39df13cc || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <fd3a3f28ed60c6af4b2a39933b151d6b27842c3b | 5bbf0cd9b6a7076af86c75e87e180099be2e11ae, de80808f37d99c6dc67bb6f97eea00c8f57a8821, f20dedce0429b293d4bad604e0d3f65d8ac96c83, e09e0301d616c1ef38a5e64e8e4326fd39df13cc, fd3a3f28ed60c6af4b2a39933b151d6b27842c3b |
| Linux/Linuxgeneric | 3.16 | Not reported |
| Linux/Linuxgeneric | >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <f27ce82eb04960465df71634b196a48a4ecafd50 || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <2d6b42a61373144298070668fddf06efe79cf2ff || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <ec7e62d77193131227df49d654d118fdf5a59892 || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <5bbf0cd9b6a7076af86c75e87e180099be2e11ae || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <de80808f37d99c6dc67bb6f97eea00c8f57a8821 || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <f20dedce0429b293d4bad604e0d3f65d8ac96c83 || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <e09e0301d616c1ef38a5e64e8e4326fd39df13cc || >=4c14a2fb5d143e4ed94143be2b8c1961b47df9af <fd3a3f28ed60c6af4b2a39933b151d6b27842c3b | f27ce82eb04960465df71634b196a48a4ecafd50, 2d6b42a61373144298070668fddf06efe79cf2ff, ec7e62d77193131227df49d654d118fdf5a59892, 5bbf0cd9b6a7076af86c75e87e180099be2e11ae, de80808f37d99c6dc67bb6f97eea00c8f57a8821, f20dedce0429b293d4bad604e0d3f65d8ac96c83, e09e0301d616c1ef38a5e64e8e4326fd39df13cc, fd3a3f28ed60c6af4b2a39933b151d6b27842c3b |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: mac802154: llsec: reject frames shorter than the authentication tag llsec_do_decrypt_auth() computes the associated-data length for the AEAD request as assoclen += datalen - authlen; where datalen is the number of bytes after the MAC header and authlen (4, 8 or 16) is the length of the authentication tag. Nothing verifies that the frame actually carries at least authlen payload bytes. A secured frame whose payload is shorter than the tag makes datalen - authlen negative; assoclen is then passed to aead_request_set_ad() as an unsigned value close to 4 GiB, so crypto_aead_decrypt() walks far off the end of the scatterlist that only spans the real frame. The frame is fully attacker-controlled and reaches this path from any IEEE 802.15.4 peer in radio range. Reject frames whose payload is shorter than the authentication tag before the subtraction. Dynamically reproduced on a KASAN kernel as a general-protection-fault in the AEAD scatterwalk, and the fix confirmed.
Quoted source text, attributed separately from HOL analysis.