CVE-2026-23093: ksmbd: smbd: fix dma_unmap_sg() nents
Published Feb 4, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: smbd: fix dmaunmapsg() nents
The dmaunmapsg() functions should be called with the same nents as the dmamapsg(), not the value the map function returned.
Affected Software
12 affected components
Linux Linux kernel
Linux Linux kernel>=5.15<5.15.199
Linux Linux kernel>=5.16<6.1.162
Linux Linux kernel>=6.2<6.6.123
Linux Linux kernel>=6.7<6.12.69
Linux Linux kernel>=6.13<6.18.8
Linux Linux kernel=6.19-rc1
Linux Linux kernel=6.19-rc2
Linux Linux kernel=6.19-rc3
Linux Linux kernel=6.19-rc4
Linux Linux kernel=6.19-rc5
Linux Linux kernel=6.19-rc6
Remediation
Event History
Feb 4, 2026
CVE Published
via MITRE·04:08 PM
Data Sourced
via MITRE·04:08 PM
Description
Data Sourced
via NVD·05:16 PM
RemedyDescriptionSeverityAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-23093?
CVE-2026-23093 has been categorized as a moderate severity vulnerability in the Linux kernel.
2
How do I fix CVE-2026-23093?
To fix CVE-2026-23093, update to the latest version of the Linux kernel where the vulnerability has been addressed.
3
What does CVE-2026-23093 affect?
CVE-2026-23093 affects the ksmbd component of the Linux kernel.
4
What risk does CVE-2026-23093 pose?
CVE-2026-23093 may lead to improper memory management, which could be exploited by an attacker.
5
When was CVE-2026-23093 disclosed?
CVE-2026-23093 was disclosed in 2026 as part of ongoing security updates in the Linux kernel.