CVE-2026-43452High· 8.2▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: netfilter: x_tables: guard option walkers against 1-byte tail reads When the last byte of options is a non-single-byte option kind, walkers that advance with i += op[i…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 45.1 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.6%
Last analysed / modified upstream
In the Linux kernel, the following vulnerability has been resolved:
netfilter: x_tables: guard option walkers against 1-byte tail reads
When the last byte of options is a non-single-byte option kind, walkers that advance with i += op[i + 1] ? : 1 can read op[i + 1] past the end of the option area.
Add an explicit i == optlen - 1 check before dereferencing op[i + 1] in xt_tcpudp and xt_dccp option walkers.
Linux >= 2e4e6a17af35be359cc8f1c924f8f198fbd478cc < c2a445367a496a3c25dbc940c10c8bd1cfd4c14aLinux >= 2e4e6a17af35be359cc8f1c924f8f198fbd478cc < ae1e1267650638136b84c23f2b31250f0ccb6823Linux >= 2e4e6a17af35be359cc8f1c924f8f198fbd478cc < c39f84e4be1be63fc60ca7141ea7b76edcea5907Linux >= 2e4e6a17af35be359cc8f1c924f8f198fbd478cc < 9b94f0e42ed248eb31929da84ed9f5310d7ff540Linux >= 2e4e6a17af35be359cc8f1c924f8f198fbd478cc < 5b18b8b35c7cded2d17b2b2604c9b0694ff48d1cLinux >= 2e4e6a17af35be359cc8f1c924f8f198fbd478cc < bc18551c6169eac5ed813778d3e3e484002dbbe5Linux >= 2e4e6a17af35be359cc8f1c924f8f198fbd478cc < d04800323336eebf441d153f43234eac9b833d36Linux >= 2e4e6a17af35be359cc8f1c924f8f198fbd478cc < cfe770220ac2dbd3e104c6b45094037455da81d4Linux 2.6.16Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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