CVE-2026-53221: Linux, невалидиран вход

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 преди c327fa4fca31415431202e063767a7ae342e19c6; fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 преди fc657ac0767c49839b3ef0b08dc0953ca30883f8; fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 преди 47fb3c2b4203556308e64354b3e78f2ce221d646; fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 преди f513f308cc4bdb4530d033431592ffbc29b7fca1; fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 преди 90fd4513315ca07da99cfd8549d3e553a7160f0d; fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 преди 2abfb19bbb81958714ad1d43ebeb65b30394184b; fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 преди 2fc7bc087cc7085368263d9d37bfe9a0bddd6a2d; fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 преди a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9
• Linux Linux: 3.19; преди 3.19; 5.10.259 до 5.10.*; 5.15.210 до 5.15.*; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.94 до 6.12.*; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; от 7.1 нататък
• Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: всички версии

Вид слабост

• CWE-20 Неправилно валидиране на входните данни

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-53221
• https://nvd.nist.gov/vuln/detail/CVE-2026-53221
• 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