5.5

CVE-2026-53249

ipv4: restrict IPOPT_SSRR and IPOPT_LSRR options

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.12.1 < 5.10.259
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.210
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.176
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.143
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.94
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.36
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.13
Linux ≫ Linux Kernel Version2.6.12 Update-
Linux ≫ Linux Kernel Version2.6.12 Updaterc2
Linux ≫ Linux Kernel Version2.6.12 Updaterc3
Linux ≫ Linux Kernel Version2.6.12 Updaterc4
Linux ≫ Linux Kernel Version2.6.12 Updaterc5
Linux ≫ Linux Kernel Version7.1 Updaterc1
Linux ≫ Linux Kernel Version7.1 Updaterc2
Linux ≫ Linux Kernel Version7.1 Updaterc3
Linux ≫ Linux Kernel Version7.1 Updaterc4
Linux ≫ Linux Kernel Version7.1 Updaterc5
Linux ≫ Linux Kernel Version7.1 Updaterc6
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.028
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/4cd6e9ed49347d3a2fdaaf07e32fb524756dddc2
Patch
https://git.kernel.org/stable/c/2a87c3e8f03ce655ed0ef500d64d5fd924ec3691
Patch
https://git.kernel.org/stable/c/89343ff12b3178fc236fe531a3603e7c97c68278
Patch
https://git.kernel.org/stable/c/8ff85dbabbbfb05e86e6cde31d91ac5782179d4d
Patch
https://git.kernel.org/stable/c/00e8845fe3428c69e980dce5071cb3da1d8f7578
Patch
https://git.kernel.org/stable/c/a4f3fd6516920988c47ba8d19714985c40c816a1
Patch
https://git.kernel.org/stable/c/28f5ad1b4055405eb1616e603fe511ba5e3725e7
Patch
https://git.kernel.org/stable/c/d3915a1f5a4bc0ac911032903c3c6ab8df9fcc7c
Patch