CVE-2026-53001netfilter: xtables: restrict several matches to inet family
Updated under an hour ago ()
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It affects Linux and 4 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: netfilter: xtables: restrict several matches to inet family This is a partial revert of: commit ab4f21e6fb1c ("netfilter: xtables: use NFPROTO_UNSPEC in more extensions") to allow ipv4 and ipv6 only. - xt_mac - xt_owner - xt_physdev These extensions are not used by ebtables in userspace. Moreover, xt_realm is only for ipv4, since dst->tclassid is ipv4 specific.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from ab4f21e6fb1c09b13c4c3cb8357babe8223471bd before 14203f9edf944b3fb63faadd62f38452421ecdfc; from ab4f21e6fb1c09b13c4c3cb8357babe8223471bd before 7eaf9c740f33230cb224dc265f3c69f8531ff57b; from ab4f21e6fb1c09b13c4c3cb8357babe8223471bd before 9a109751b297b0f2135495749ef5a18ba31ec7d4; from ab4f21e6fb1c09b13c4c3cb8357babe8223471bd before cbeb259f31382de70a70a59ffd0e66f5e80d9818; from ab4f21e6fb1c09b13c4c3cb8357babe8223471bd before 689a91ff18d6448d94c1ab7c076fecdb2b668bef; from ab4f21e6fb1c09b13c4c3cb8357babe8223471bd before 76160e04440c9698b989dbd9492a7ec4f520c9ee; from ab4f21e6fb1c09b13c4c3cb8357babe8223471bd before fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9; from ab4f21e6fb1c09b13c4c3cb8357babe8223471bd before b6fe26f86a1649f84e057f3f15605b08eda15497 | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 2.6.28 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10 | NVD |
References
- https://git.kernel.org/stable/c/14203f9edf944b3fb63faadd62f38452421ecdfcpatch
- https://git.kernel.org/stable/c/7eaf9c740f33230cb224dc265f3c69f8531ff57bpatch
- https://git.kernel.org/stable/c/9a109751b297b0f2135495749ef5a18ba31ec7d4patch
- https://git.kernel.org/stable/c/cbeb259f31382de70a70a59ffd0e66f5e80d9818patch
- https://git.kernel.org/stable/c/689a91ff18d6448d94c1ab7c076fecdb2b668befpatch
- https://git.kernel.org/stable/c/76160e04440c9698b989dbd9492a7ec4f520c9eepatch
- https://git.kernel.org/stable/c/fa88161ef56e29bdaa05cc89dbc4ee221e94bfe9patch
- https://git.kernel.org/stable/c/b6fe26f86a1649f84e057f3f15605b08eda15497patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.