High severity · published May 1, 2026
CVE-2026-43028
netfilter: x_tables: ensure names are nul-terminated
7.1
CVSS
0.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
4.5 before 5.10.253; 5.11 before 5.15.203; 5.16 before 6.1.168; 6.2 before 6.6.134; 6.7 before 6.12.81; 6.13 before 6.18.22; +7 more · source: NVD
LI
Linux · Linux
c38c4597e4bf3e99860eac98211748e1ecb0e139 before bcac50ea0a29d430eedc5ac87b215393b567baa9; c38c4597e4bf3e99860eac98211748e1ecb0e139 before ea01c1b219f5a11c66918abaa6f052e5a74041d6; c38c4597e4bf3e99860eac98211748e1ecb0e139 before aa6cd4a8863391e0a64f62d8922cb0af732a2cf2; c38c4597e4bf3e99860eac98211748e1ecb0e139 before c2d4a3abb15ca14716c6d8b9ffcbcd7c63626af4; c38c4597e4bf3e99860eac98211748e1ecb0e139 before 673bbd36cba21d10a10f0932f479df7468e26fbb; c38c4597e4bf3e99860eac98211748e1ecb0e139 before f419bdc205894750f4d3ec042bc87a1b9cde1351; +3 more · source: vendor
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.6; V3.1.5; V3.1.7; V3.1.6; V3.1.5; V3.1.7 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.6; V3.1.5; V3.1.7; V3.1.6; V3.1.5; V3.1.7 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.6; V3.1.5; V3.1.7 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43028
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-43028
Patch
https://git.kernel.org/stable/c/673bbd36cba21d10a10f0932f479df7468e26fbb
Patch
https://git.kernel.org/stable/c/73124608172890306b85f2206d8b3cac20e324f1
Patch
https://git.kernel.org/stable/c/a958a4f90ddd7de0800b33ca9d7b886b7d40f74e
Patch
https://git.kernel.org/stable/c/aa6cd4a8863391e0a64f62d8922cb0af732a2cf2
Patch
https://git.kernel.org/stable/c/bcac50ea0a29d430eedc5ac87b215393b567baa9
Patch
https://git.kernel.org/stable/c/c2d4a3abb15ca14716c6d8b9ffcbcd7c63626af4
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