9.8

CVE-2026-31637

rxrpc: reject undecryptable rxkad response tickets

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 2.6.22.1 < 6.6.135
LinuxLinux Kernel Version >= 6.7 < 6.12.82
LinuxLinux Kernel Version >= 6.13 < 6.18.23
LinuxLinux Kernel Version >= 6.19 < 6.19.13
LinuxLinux Kernel Version2.6.22 Update-
LinuxLinux Kernel Version7.0 Updaterc1
LinuxLinux Kernel Version7.0 Updaterc2
LinuxLinux Kernel Version7.0 Updaterc3
LinuxLinux Kernel Version7.0 Updaterc4
LinuxLinux Kernel Version7.0 Updaterc5
LinuxLinux Kernel Version7.0 Updaterc6
LinuxLinux Kernel Version7.0 Updaterc7
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.08% 0.237
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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