Answer in brief
CVE-2026-31612 records a High severity (CVSS 7.5) vulnerability in ksmbd: validate EaNameLength in smb2_get_ea(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (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 7.5. 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), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <859f11e1bc81a4d32bb3ceeae54bcd296ac675d3 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <4b73376feecb3b61172fe5b4ff42bbbb8531669d || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <551dfb15b182abad4600eaf7b37e6eb7000d5b1b || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <3363a770b193f555f29d76ddf4ced3305c0ccf6d || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <243b206bcb5a7137e8bddd57b2eec81e1ebd3859 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <dfc6878d14acafffbe670bf2576620757a10a3d8 || >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <66751841212c2cc196577453c37f7774ff363f02 | 859f11e1bc81a4d32bb3ceeae54bcd296ac675d3, 4b73376feecb3b61172fe5b4ff42bbbb8531669d, 551dfb15b182abad4600eaf7b37e6eb7000d5b1b, 3363a770b193f555f29d76ddf4ced3305c0ccf6d, 243b206bcb5a7137e8bddd57b2eec81e1ebd3859, dfc6878d14acafffbe670bf2576620757a10a3d8, 66751841212c2cc196577453c37f7774ff363f02 |
| Linux/Linuxgeneric | 5.15 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
Apr 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate EaNameLength in smb2_get_ea() smb2_get_ea() reads ea_req->EaNameLength from the client request and passes it directly to strncmp() as the comparison length without verifying that the length of the name really is the size of the input buffer received. Fix this up by properly checking the size of the name based on the value received and the overall size of the request, to prevent a later strncmp() call to use the length as a "trusted" size of the buffer. Without this check, uninitialized heap values might be slowly leaked to the client.
Quoted source text, attributed separately from HOL analysis.