9.8

CVE-2026-53221

ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()

In the Linux kernel, the following vulnerability has been resolved:

ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()

In vti6_tnl_lookup(), when an exact match for a tunnel fails,
the code falls back to searching for wildcard tunnels:

- Tunnels matching the packet's local address, with any remote address
  wildcard remote).

- Tunnels matching the packet's remote address, with any local address
  (wildcard local).

However, vti6 stores all these different types of tunnels in the same
hash table (ip6n->tnls_r_l) prone to hash collisions.

The bug is that the fallback search loops in vti6_tnl_lookup() were
missing checks to ensure that the candidate tunnel actually has
a wildcard address.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.19 < 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 Version 7.1 Update rc1
Linux ≫ Linux Kernel Version 7.1 Update rc2
Linux ≫ Linux Kernel Version 7.1 Update rc3
Linux ≫ Linux Kernel Version 7.1 Update rc4
Linux ≫ Linux Kernel Version 7.1 Update rc5
Linux ≫ Linux Kernel Version 7.1 Update rc6
Linux ≫ Linux Kernel Version 7.1 Update rc7
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.51% 0.407
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/c327fa4fca31415431202e063767a7ae342e19c6
Patch
https://git.kernel.org/stable/c/fc657ac0767c49839b3ef0b08dc0953ca30883f8
Patch
https://git.kernel.org/stable/c/47fb3c2b4203556308e64354b3e78f2ce221d646
Patch
https://git.kernel.org/stable/c/f513f308cc4bdb4530d033431592ffbc29b7fca1
Patch
https://git.kernel.org/stable/c/90fd4513315ca07da99cfd8549d3e553a7160f0d
Patch
https://git.kernel.org/stable/c/2abfb19bbb81958714ad1d43ebeb65b30394184b
Patch
https://git.kernel.org/stable/c/2fc7bc087cc7085368263d9d37bfe9a0bddd6a2d
Patch
https://git.kernel.org/stable/c/a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9
Patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html