5.5

CVE-2026-45930: linux

CVSS: 5.5v3.1MediumUndergoing analysis
AliasesUBUNTU-CVE-2026-45930DEBIAN-CVE-2026-45930
Published 27-05-2026Last modified 19-06-2026
Open JSON

Vulnerability summary

CVE-2026-45930 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 2.6% 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 · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 18 · Related 18
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23221-1SUSE-SU-2026:23231-1SUSE-SU-2026:23237-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 19-06-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: mctp: ensure our nlmsg responses are initialised Syed Faraz Abrar (@farazsth98) from Zellic, and Pumpkin (@u1f383) from DEVCORE Research Team working with Trend Micro Zero Day Initiative report that a RTM_GETNEIGH will return uninitalised data in the pad bytes of the ndmsg data. Ensure we're initialising the netlink data to zero, in the link, addr and neigh response messages.

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

+0.01 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

Ubuntu146 products
  • linux< 5.15.0-198.208 | < 6.8.0-146.146 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1117.124 | < 6.8.0-1066.69 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 583be982d93479ea3d85091b0fd0b01201ede87d, < b37da3ac099e145bcd3be82c745a8d335772e3af | ≥ 583be982d93479ea3d85091b0fd0b01201ede87d, < c4f840437e7641764de15f2de951ac8335d641f1 | ≥ 583be982d93479ea3d85091b0fd0b01201ede87d, < 963537a26fd892f7e414a091f807b44aeee97a7d | ≥ 583be982d93479ea3d85091b0fd0b01201ede87d, < 976612471a9e6ead6ceffc241e4d0a1aac90b36a | ≥ 583be982d93479ea3d85091b0fd0b01201ede87d, < 54ed418de62a148a655262da682a050fa05f7924 | ≥ 583be982d93479ea3d85091b0fd0b01201ede87d, < 6fb6a97c86abb8592158088afaea0eb464cf9de1 | ≥ 583be982d93479ea3d85091b0fd0b01201ede87d, < a6a9bc544b675d8b5180f2718ec985ad267b5cbf | 5.15
  • linux_kernel≥ 5.15, < 5.15.210 | ≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.93 | ≥ 6.13, < 6.18.35 | ≥ 6.19, < 6.19.4
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 6.19.6-1

3 vendors · 149 products

References

24 links
Show all 24 references