CVE-2023-3867

ksmbd: fix out of bounds read in smb2_sess_setup

State: Published
Severity: 9.1 Critical
Published: Aug 16, 2025
Updated: Aug 15, 2026
Reserved: Jul 24, 2023

Description

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix out of bounds read in smb2_sess_setup

ksmbd does not consider the case of that smb2 session setup is in compound request. If this is the second payload of the compound, OOB read issue occurs while processing the first payload in the smb2_sess_setup().

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 676392184785ace61e939831e7ca44a03d438c3bAffected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before ef572ffa8eb44111eed2925fbb2adca78bdcbf61Affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 2ba03cecb12ac7ac9e0170e251543c56832d9959Affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to before 98422bdd4cb3ca4d08844046f6507d7ec2c2b8d8Affected
LinuxLinux	5.15Affected before 5.15Not affected 5.15.145 through 5.15.Not affected 6.1.40 through 6.1.Not affected 6.4.5 through 6.4.*Not affected 6.5 and laterNot affected

References

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