CVE-2026-98113

ksmbd: rate limit unmapped SID errors

MEDIUM

5.5

CVSS Score

Published: September 25, 2026 at 10:35 AM UTC

Updated: October 28, 2026 at 06:52 PM UTC

1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.15 ≤ v < 5.15.2226.0 ≤ v < 6.1.1896.13 ≤ v < 6.18.536.19 ≤ v < 7.2.76.2 ≤ v < 6.6.1586.7 ≤ v < 6.12.115.15 7.3e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9

Vendor states this is fixed in 13af319c1efec0b45fb5c1b16830eb0888b3fd1e (fixed)

Vendor states this is fixed in 3005d43143096321cc857645a9d48ef4ffde8bcf (fixed)

Vendor states this is fixed in 30dbb08777b9a611d7d9193c040f382fbd0e7562 (fixed)

Vendor states this is fixed in 486876f957456721b5e51af532235db4c6f7bd47 (fixed)

Vendor states this is fixed in 54cb2a909996346ac6a8a3beac96c07b3dcba584 (fixed)

Vendor states this is fixed in 674aabf554bdaffcf25f145bf32c8b4f510f7916 (fixed)

Vendor states this is fixed in feca5e70fc963b088377b20879e8cd8237c2fd7d (fixed)

Vendor states this is fixed in 5.15 (unaffected)

Vendor states this is fixed in 5.15.222 (unaffected)

Vendor states this is fixed in 6.1.189 (unaffected)

Vendor states this is fixed in 6.12.111 (unaffected)

Vendor states this is fixed in 6.18.53 (unaffected)