Medium 5.5Published Feb 4, 2026

CVE-2026-23093ksmbd: smbd: fix dma_unmap_sg() nents

Updated under an hour ago (Oct 27, 2026, 1:10 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbd: fix dma_unmap_sg() nents The dma_unmap_sg() functions should be called with the same nents as the dma_map_sg(), not the value the map function returned.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0626e6641f6b467447c81dd7678a69c66f7746cf before f569f5b8bfd5133defdf9c7f8a72c63aa11f54ec; 0626e6641f6b467447c81dd7678a69c66f7746cf builds before 6ececffd3e9fe93a87738625dc0671165d27bf96; 0626e6641f6b467447c81dd7678a69c66f7746cf builds before 4d1e9a4a450aae47277763562122cc80ed703ab2; 0626e6641f6b467447c81dd7678a69c66f7746cf builds before 70ba85e439221a5d6dda34a3004db6640f0525e6; from 0626e6641f6b467447c81dd7678a69c66f7746cf before d1943bc9dc9508f5933788a76f8a35d10e43a646; 0626e6641f6b467447c81dd7678a69c66f7746cf builds before 98e3e2b561bc88f4dd218d1c05890672874692f6	CNA record
linux linux_kernel linux:linux_kernel	from 5.15 before 5.15.199; from 5.16 before 6.1.162; from 6.2 before 6.6.123; from 6.7 before 6.12.69; from 6.13 before 6.18.8; 6.19; 6.19; 6.19; and 3 more ranges	NVD

References

References

https://git.kernel.org/stable/c/f569f5b8bfd5133defdf9c7f8a72c63aa11f54ec	patch
https://git.kernel.org/stable/c/6ececffd3e9fe93a87738625dc0671165d27bf96	patch
https://git.kernel.org/stable/c/4d1e9a4a450aae47277763562122cc80ed703ab2	patch
https://git.kernel.org/stable/c/70ba85e439221a5d6dda34a3004db6640f0525e6	patch
https://git.kernel.org/stable/c/d1943bc9dc9508f5933788a76f8a35d10e43a646	patch
https://git.kernel.org/stable/c/98e3e2b561bc88f4dd218d1c05890672874692f6	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.