7.1

CVE-2026-43028: linux Improper Null Termination

CVSS: 7.1v3.1HighModified
AliasesUBUNTU-CVE-2026-43028DEBIAN-CVE-2026-43028
Published 01-05-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-43028 is a high (CVSS 7.1) Improper Null Termination vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.5% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 41 · Related 39
MGASA-2026-0108MGASA-2026-0110OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22433-1SUSE-SU-2026:22436-1SUSE-SU-2026:22458-1

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: x_tables: ensure names are nul-terminated Reject names that lack a \0 character before feeding them to functions that expect c-strings. Fixes tag is the most recent commit that needs this change.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

+0.04 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.17%

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

Affected systems

Ubuntu156 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c38c4597e4bf3e99860eac98211748e1ecb0e139, < bcac50ea0a29d430eedc5ac87b215393b567baa9 | ≥ c38c4597e4bf3e99860eac98211748e1ecb0e139, < ea01c1b219f5a11c66918abaa6f052e5a74041d6 | ≥ c38c4597e4bf3e99860eac98211748e1ecb0e139, < aa6cd4a8863391e0a64f62d8922cb0af732a2cf2 | ≥ c38c4597e4bf3e99860eac98211748e1ecb0e139, < c2d4a3abb15ca14716c6d8b9ffcbcd7c63626af4 | ≥ c38c4597e4bf3e99860eac98211748e1ecb0e139, < 673bbd36cba21d10a10f0932f479df7468e26fbb | ≥ c38c4597e4bf3e99860eac98211748e1ecb0e139, < f419bdc205894750f4d3ec042bc87a1b9cde1351 | ≥ c38c4597e4bf3e99860eac98211748e1ecb0e139, < 73124608172890306b85f2206d8b3cac20e324f1 | ≥ c38c4597e4bf3e99860eac98211748e1ecb0e139, < a958a4f90ddd7de0800b33ca9d7b886b7d40f74e | 4.5
  • linux_kernel≥ 4.5, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.168 | ≥ 6.2, < 6.6.134 | ≥ 6.7, < 6.12.81 | ≥ 6.13, < 6.18.22 | ≥ 6.19, < 6.19.12 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.12-1

3 vendors · 159 products

References

42 links
Show all 42 references