CVE-2026-31633

CRITICAL EPSS 37.1%
Published Apr 24, 20262mo ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Apr 24, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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).

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
37.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥6.16.1  –  <6.18.23
linuxlinux_kernel*≥6.19  –  <6.19.13
linuxlinux_kernel6.16any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/1f864d9daaf622aeaa774404fd51e7d6a435b046
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/699e52180f4231c257821c037ed5c99d5eb0edb8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c1e242beb6b1efc3c286f617e8d940c8fbf2ed41
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1f864d9daaf622aeaa774404fd51e7d6a435b046
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/699e52180f4231c257821c037ed5c99d5eb0edb8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c1e242beb6b1efc3c286f617e8d940c8fbf2ed41
    Patch