Answer in brief
CVE-2026-90230 records a Unknown severity vulnerability in nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate(). The current sources do not mark it as known exploited. The current feed maps 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.
A CVSS score is not reported in the current record. 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=db1312dd95488b5e6ff362ff66fcf953a46b1821 <89ff11b72f38976f3b5aea23a5228ee05e277209 || >=db1312dd95488b5e6ff362ff66fcf953a46b1821 <aaac783950b17c57df9b6f7344747cacb1a407ed || >=db1312dd95488b5e6ff362ff66fcf953a46b1821 <c38a8186326799957d293d370136c128cd113916 || >=db1312dd95488b5e6ff362ff66fcf953a46b1821 <7b81e4d2230e3d2d372c826180c4ef0efc244f31 || >=db1312dd95488b5e6ff362ff66fcf953a46b1821 <5bb96cc218835769ab74ec7f3ea2bf81fbffe955 | 89ff11b72f38976f3b5aea23a5228ee05e277209, aaac783950b17c57df9b6f7344747cacb1a407ed, c38a8186326799957d293d370136c128cd113916, 7b81e4d2230e3d2d372c826180c4ef0efc244f31, 5bb96cc218835769ab74ec7f3ea2bf81fbffe955 |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate() nvmet_execute_auth_send() allocates the DH-HMAC-CHAP message buffer with the host-supplied transfer length (tl) and hands it to nvmet_auth_negotiate() without passing tl along. nvmet_auth_negotiate() then reads the negotiate header and, for each of the halen hash identifiers and dhlen DH group identifiers, indexes into the fixed idlist[60] array (hashes at idlist[0..halen), groups at idlist[30..]). Neither the transfer length nor halen/dhlen is validated. A malicious or non-conformant host can report a tl smaller than the negotiate structure, or a halen/dhlen larger than the array (both are u8, up to 255), making the loops read past the end of the allocated buffer (heap out-of-bounds read). The sibling nvmet_auth_reply() already validates tl against the structure size; the negotiate path did not. Pass tl into nvmet_auth_negotiate(), reject a tl that does not cover the negotiate data plus one full protocol descriptor, and reject halen/dhlen larger than NVME_AUTH_DHCHAP_MAX_DH_IDS.
Quoted source text, attributed separately from HOL analysis.