ipv4: restrict IPOPT_SSRR and IPOPT_LSRR options (Linux Linux)

CVE-2026-53249
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 2 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ipv4: restrict IPOPT_SSRR and IPOPT_LSRR options This patch restricts setting Loose Source and Record Route (LSRR) and Strict Source and Record Route (SSRR) IP options to users with CAP_NET_RAW capability. This prevents unprivileged applications from forcing packets to route through attacker-controlled nodes to leak TCP ISN and possibly other protocol information. While LSRR and SSRR are commonly filtered in many network environments, they may still be supported and forwarded along some network paths. RFC 7126 (Recommendations on Filtering of IPv4 Packets Containing IPv4 Options) recommend to drop these options in 4.3 and 4.4.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4cd6e9ed49347d3a2fdaaf07e32fb524756dddc2 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2a87c3e8f03ce655ed0ef500d64d5fd924ec3691 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 89343ff12b3178fc236fe531a3603e7c97c68278 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8ff85dbabbbfb05e86e6cde31d91ac5782179d4d ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 00e8845fe3428c69e980dce5071cb3da1d8f7578 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a4f3fd6516920988c47ba8d19714985c40c816a1
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 5.10.259 ≤ 5.10.* ; unaffected 5.15.210 ≤ 5.15.* ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.143 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD