Tracker / CVE-2026-31637
CVE-2026-31637
Critical 9.8
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.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 2.6.22.1 → 6.6.135 |
| linux | linux_kernel · 6.13 → 6.18.23 |
| linux | linux_kernel · 6.19 → 6.19.13 |
| linux | linux_kernel · 6.7 → 6.12.82 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.