CVE-2026-31637: Linux, логическа грешка

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: rxrpc: reject undecryptable rxkad response tickets rxkad_decrypt_ticket() decrypts the RXKAD response ticket and then parses the buffer as plaintext without checking whether crypto_skcipher_decrypt() succeeded. A malformed RESPONSE can therefore use a non-block-aligned ticket length, make the decrypt operation fail, and still drive the ticket parser with attacker-controlled bytes. Check the decrypt result and abort the connection with RXKADBADTICKET when ticket decryption fails.

Засегнати продукти

• Linux Linux: 17926a79320afa9b95df6b977b40cca6d8713cea преди 252157d939d179b5d767cb860ff8fa7f8723b67a; 17926a79320afa9b95df6b977b40cca6d8713cea преди a75b3b361dd481d942c5f259a82d59718a41092c; 17926a79320afa9b95df6b977b40cca6d8713cea преди b3a808cd0790b5075aaa2bc3588edf02cd71d352; 17926a79320afa9b95df6b977b40cca6d8713cea преди 47073aab8a3a5a7b41c9bd37d2a3dcbeeccd6c8a; 17926a79320afa9b95df6b977b40cca6d8713cea преди a149dcae23309df9de1c3b6b5d468610ef5ab7de; 17926a79320afa9b95df6b977b40cca6d8713cea преди 22f6258e7b31dba9bf88dce4e3ee7f0f20072e60; 17926a79320afa9b95df6b977b40cca6d8713cea преди 58fcd1b156152613ba00a064a129fb69507ddd7d; 17926a79320afa9b95df6b977b40cca6d8713cea преди fe4447cd95623b1cfacc15f280aab73a6d7340b2
• Linux Linux: 2.6.22; преди 2.6.22; 5.10.258 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.135 до 6.6.*; 6.12.82 до 6.12.*; 6.18.23 до 6.18.*; 6.19.13 до 6.19.*; 7.0 до *
• Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: преди *

Вид слабост

• CWE-754 Improper Check for Unusual or Exceptional Conditions

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31637
• https://nvd.nist.gov/vuln/detail/CVE-2026-31637
• https://git.kernel.org/stable/c/252157d939d179b5d767cb860ff8fa7f8723b67a
• https://git.kernel.org/stable/c/a75b3b361dd481d942c5f259a82d59718a41092c
• https://git.kernel.org/stable/c/b3a808cd0790b5075aaa2bc3588edf02cd71d352
• https://git.kernel.org/stable/c/47073aab8a3a5a7b41c9bd37d2a3dcbeeccd6c8a
• https://git.kernel.org/stable/c/a149dcae23309df9de1c3b6b5d468610ef5ab7de
• https://git.kernel.org/stable/c/22f6258e7b31dba9bf88dce4e3ee7f0f20072e60
• https://git.kernel.org/stable/c/58fcd1b156152613ba00a064a129fb69507ddd7d
• https://git.kernel.org/stable/c/fe4447cd95623b1cfacc15f280aab73a6d7340b2
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html