Description · from the CVE record
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
ProductAffectedFixed inSource
Linuxfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 – < c327fa4fca31415431202e063767a7ae342e19c6c327fa4fca31415431202e063767a7ae342e19c6CNA
Linuxfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 – < fc657ac0767c49839b3ef0b08dc0953ca30883f8fc657ac0767c49839b3ef0b08dc0953ca30883f8CNA
Linuxfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 – < 47fb3c2b4203556308e64354b3e78f2ce221d64647fb3c2b4203556308e64354b3e78f2ce221d646CNA
Linuxfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 – < f513f308cc4bdb4530d033431592ffbc29b7fca1f513f308cc4bdb4530d033431592ffbc29b7fca1CNA
Linuxfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 – < 90fd4513315ca07da99cfd8549d3e553a7160f0d90fd4513315ca07da99cfd8549d3e553a7160f0dCNA
Linuxfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 – < 2abfb19bbb81958714ad1d43ebeb65b30394184b2abfb19bbb81958714ad1d43ebeb65b30394184bCNA
Linuxfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 – < 2fc7bc087cc7085368263d9d37bfe9a0bddd6a2d2fc7bc087cc7085368263d9d37bfe9a0bddd6a2dCNA
Linuxfbe68ee87522f6eaa10f9076c0a7117e1613f2f7 – < a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9CNA
Linux3.19–CNA
SIMATIC S7-1500 TM MFP - GNU/Linux subsystemall versions–siemens-SADP
by Kastro