CVE-2026-98113

ksmbd: rate limit unmapped SID errors

CVE-2026-98113 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98113, released September 29, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.5

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0016

4th percentile

In the Linux kernel, the following vulnerability has been resolved: ksmbd: rate limit unmapped SID errors A client can include many structurally valid but unmapped SIDs in a DACL. Logging every mapping failure lets one request generate hundreds of kernel error messages. Rate limit the message to prevent an authenticated client from flooding the kernel log.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
linux · Debian 12.15 (bookworm)	6.1.190-1	DEBIAN-CVE-2026-98113	Sep 29, 2026
linux · Debian 13.5 (trixie)	6.12.111-1	DEBIAN-CVE-2026-98113	Sep 29, 2026
linux · Debian 14	7.2.7-1	DEBIAN-CVE-2026-98113	Sep 29, 2026
linux-6.12 · Debian 12.15 (bookworm)	6.12.111-1~deb12u1	DEBIAN-CVE-2026-98113	Sep 29, 2026

Details

Published
September 25, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98113

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