CVE-2026-93785
CVE CVE-2026-93785EUVD EUVD-2026-86172Published 2026-09-24T16:02:18.000ZLast changed 2026-09-25T12:42:50.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: cifs: validate idmap key payload length The cifs.idmap key type stores its payload length in key->datalen, which is limited to U16_MAX. Accepting a larger key payload truncates the recorded length and can make later users interpret the payload using inconsistent bounds. Reject oversized preparsed payloads before allocating or copying them. This keeps key->datalen consistent with the stored data for both inline and separately allocated idmap payloads.
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: 6.18.53; 21fed0d5b763b94a7d1568c27d0cce892ab8d43e <455488cd5054bcc59db40fa1cc2c004031a5b2a5; 21fed0d5b763b94a7d1568c27d0cce892ab8d43e <6cfeef221ac00d63c07f6122f58e6159bde69ca0; 3.2; patch: 6.12.111; 21fed0d5b763b94a7d1568c27d0cce892ab8d43e <8b12f65d7caf16d124098cb4895a203367d35b57; patch: 0; patch: 7.2
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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