7.5

CVE-2026-31612

ksmbd: validate EaNameLength in smb2_get_ea()

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.15 < 6.6.136
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.83
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.24
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.14
Linux ≫ Linux Kernel Version >= 7.0 < 7.0.1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.42% 0.33
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/551dfb15b182abad4600eaf7b37e6eb7000d5b1b
Patch
https://git.kernel.org/stable/c/3363a770b193f555f29d76ddf4ced3305c0ccf6d
Patch
https://git.kernel.org/stable/c/243b206bcb5a7137e8bddd57b2eec81e1ebd3859
Patch
https://git.kernel.org/stable/c/dfc6878d14acafffbe670bf2576620757a10a3d8
Patch
https://git.kernel.org/stable/c/66751841212c2cc196577453c37f7774ff363f02
Patch
https://git.kernel.org/stable/c/4b73376feecb3b61172fe5b4ff42bbbb8531669d
Patch
https://git.kernel.org/stable/c/859f11e1bc81a4d32bb3ceeae54bcd296ac675d3