CVE-2026-93812
kernel: ksmbd: fix sd_ndr.data memory leak in ksmbd_vfs_set_sd_xattr
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 24, 2026
Updated · October 13, 2026
Description
A flaw was found in the Linux kernel's ksmbd (Server Message Block) server. A remote attacker could cause a denial of service (DoS) by triggering a kernel memory leak during security attribute operations. When an error occurs while encoding security descriptors, dynamically allocated memory is not freed on the failure path, gradually consuming system memory over time.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime