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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-31633

rxrpc: Fix integer overflow in rxgk_verify_response()

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix integer overflow in rxgk_verify_response() In rxgk_verify_response(), there's a potential integer overflow due to rounding up token_len before checking it, thereby allowing the length check to be bypassed. Fix this by checking the unrounded value against len too (len is limited as the response must fit in a single UDP packet).

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a to < 1f864d9daaf622aeaa774404fd51e7d6a435b046affected
  • 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a to < c1e242beb6b1efc3c286f617e8d940c8fbf2ed41affected
  • 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a to < 699e52180f4231c257821c037ed5c99d5eb0edb8affected

Linux Linux

Default version status: affected

  • 6.16affected
  • 0 to < 6.16unaffected
  • 6.18.23 to ≤ 6.18.*unaffected
  • 6.19.13 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References