CVE Explorer

CVE-2026-43452

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f2a4b7fcbb3772dffc9bcd8fa9da035b54dc0f4c63fe09dca53611f789a981af

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/xt_dccp.c","net/netfilter/xt_tcpudp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c2a445367a496a3c25dbc940c10c8bd1cfd4c14a","status":"affected","version":"2e4e6a17af35be359cc8f1c924f8f198fbd478cc","versionType":"git"},{"lessThan":"ae1e1267650638136b84c23f2b31250f0ccb6823","status":"affected","version":"2e4e6a17af35be359cc8f1c924f8f198fbd478cc","versionType":"git"},{"lessThan":"c39f84e4be1be63fc60ca7141ea7b76edcea5907","status":"affected","vers…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/xt_dccp.c","net/netfilter/xt_tcpudp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.16"},{"lessThan":"2.6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167"…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":8.2,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions

{"url":"https://git.kernel.org/stable/c/5b18b8b35c7cded2d17b2b2604c9b0694ff48d1c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/9b94f0e42ed248eb31929da84ed9f5310d7ff540"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/ae1e1267650638136b84c23f2b31250f0ccb6823"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/bc18551c6169eac5ed813778d3e3e484002dbbe5"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/c2a445367a496a3c25dbc940c10c8bd1cfd4c14a"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/c39f84e4be1be63fc60ca7141ea7b76edcea5907"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/cfe770220ac2dbd3e104c6b45094037455da81d4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/references/7

{"url":"https://git.kernel.org/stable/c/d04800323336eebf441d153f43234eac9b833d36"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0b0dcd127011947eeab477dc3088e29ac613a3b03156951cd247b21344881960 · sha256:be6b177f03ef5e10… · /containers/cna/references/6

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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