5.5

CVE-2026-23093: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-23093DEBIAN-CVE-2026-23093
Published 04-02-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2026-23093 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.2% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.14%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 31 · Related 28
DLA-4476-1DSA-6126-1DSA-6127-1USN-8162-1USN-8180-1USN-8180-2

Timeline

  1. 04-02-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

+0.02 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu144 products
  • linux< 5.15.0-176.186 | < 6.8.0-117.117 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1105.112 | < 6.8.0-1055.58 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < f569f5b8bfd5133defdf9c7f8a72c63aa11f54ec | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 6ececffd3e9fe93a87738625dc0671165d27bf96 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 4d1e9a4a450aae47277763562122cc80ed703ab2 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 70ba85e439221a5d6dda34a3004db6640f0525e6 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < d1943bc9dc9508f5933788a76f8a35d10e43a646 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 98e3e2b561bc88f4dd218d1c05890672874692f6 | 5.15
  • linux_kernel≥ 5.15, < 5.15.199 | ≥ 5.16, < 6.1.162 | ≥ 6.2, < 6.6.123 | ≥ 6.7, < 6.12.69 | ≥ 6.13, < 6.18.8 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1

3 vendors · 147 products

References

38 links
Show all 38 references