Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 before c327fa4fca31415431202e063767a7ae342e19c6; affected fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 before fc657ac0767c49839b3ef0b08dc0953ca30883f8; affected fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 before 47fb3c2b4203556308e64354b3e78f2ce221d646; affected fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 before f513f308cc4bdb4530d033431592ffbc29b7fca1; affected fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 before 90fd4513315ca07da99cfd8549d3e553a7160f0d; affected fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 before 2abfb19bbb81958714ad1d43ebeb65b30394184b; affected fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 before 2fc7bc087cc7085368263d9d37bfe9a0bddd6a2d; affected fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 before a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9 |
| Linux / Linux | affected 3.19; unaffected 0 before 3.19; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
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
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.