CVE-2026-68125
CVE CVE-2026-68125EUVD EUVD-2026-55506Published 2026-08-10T11:58:46.000Z
What the advisory describes
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.
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: 7.1.6; 4c14a2fb5d143e4ed94143be2b8c1961b47df9af <fd3a3f28ed60c6af4b2a39933b151d6b27842c3b; patch: 0; patch: 6.12.101; patch: 6.6.148; patch: 7.2-rc5; 4c14a2fb5d143e4ed94143be2b8c1961b47df9af <de80808f37d99c6dc67bb6f97eea00c8f57a8821; 4c14a2fb5d143e4ed94143be2b8c1961b47df9af <e09e0301d616c1ef38a5e64e8e4326fd39df13cc; patch: 6.18.42; 4c14a2fb5d143e4ed94143be2b8c1961b47df9af <f20dedce0429b293d4bad604e0d3f65d8ac96c83; 3.16; 4c14a2fb5d143e4ed94143be2b8c1961b47df9af <5bbf0cd9b6a7076af86c75e87e180099be2e11ae
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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