Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 to < c327fa4fca31415431202e063767a7ae342e19c6affectedfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 to < fc657ac0767c49839b3ef0b08dc0953ca30883f8affectedfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 to < 47fb3c2b4203556308e64354b3e78f2ce221d646affectedfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 to < f513f308cc4bdb4530d033431592ffbc29b7fca1affectedfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 to < 90fd4513315ca07da99cfd8549d3e553a7160f0daffectedfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 to < 2abfb19bbb81958714ad1d43ebeb65b30394184baffectedfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 to < 2fc7bc087cc7085368263d9d37bfe9a0bddd6a2daffectedfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 to < a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9affected
Linux Linux
Default version status: affected
3.19affected0 to < 3.19unaffected5.10.259 to ≤ 5.10.*unaffected5.15.210 to ≤ 5.15.*unaffected6.1.176 to ≤ 6.1.*unaffected6.6.143 to ≤ 6.6.*unaffected6.12.94 to ≤ 6.12.*unaffected6.18.36 to ≤ 6.18.*unaffected7.0.13 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c327fa4fca31415431202e063767a7ae342e19c6 ↗
- https://git.kernel.org/stable/c/fc657ac0767c49839b3ef0b08dc0953ca30883f8 ↗
- https://git.kernel.org/stable/c/47fb3c2b4203556308e64354b3e78f2ce221d646 ↗
- https://git.kernel.org/stable/c/f513f308cc4bdb4530d033431592ffbc29b7fca1 ↗
- https://git.kernel.org/stable/c/90fd4513315ca07da99cfd8549d3e553a7160f0d ↗
- https://git.kernel.org/stable/c/2abfb19bbb81958714ad1d43ebeb65b30394184b ↗
- https://git.kernel.org/stable/c/2fc7bc087cc7085368263d9d37bfe9a0bddd6a2d ↗
- https://git.kernel.org/stable/c/a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗