What is CVE-2026-93812?

CVE-2026-93812 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.15 onward and patched in 5.15.222, 6.1.189, 6.6.158 and others. CVE-2026-93812 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-93812?

CVE-2026-93812 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-93812?

Yes, CVE-2026-93812 has been patched. Fixed versions include 5.15.222, 6.1.189, 6.6.158 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-93812 actively exploited?

CVE-2026-93812 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-93812

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix sd_ndr.data memory leak in ksmbd_vfs_set_sd_xattr ndr_encode_v4_ntacl() allocates sd_ndr.data via kzalloc() at entry. If any subsequent ndr_write_*() call returns error during encoding, the allocated sd_ndr.data won't be freed and causes memory leak. Move kfree(sd_ndr.data) into out label to ensure the buffer gets released on all success and error return paths.

Package Linux Kernel

Published 2026-09-24

Last modified 2026-10-03

Patch available

Yes

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.222 5.15.x ✓ 6.1.189 6.1.x ✓ 6.6.158 6.6.x ✓ 6.12.111 6.12.x ✓ 6.18.53 6.18.x ✓ 7.2

References

6 total

Showing 5 of 6 references View all on NVD

Frequently asked questions

What is CVE-2026-93812?

CVE-2026-93812 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.222, 6.1.189, 6.6.158 and others. CVE-2026-93812 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-93812?

Yes. CVE-2026-93812 has been patched. Fixed versions include 5.15.222, 6.1.189, 6.6.158 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-93812 actively exploited?

No. CVE-2026-93812 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.