CVE-2026-31640

medium Red Hat
CVSS v3 Base Score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0%
Exploitation probability in 30 days
Top 96% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: April 24, 2026 (20 days ago)
Last Modified: April 24, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's rxrpc component. This vulnerability occurs in the `rxrpc_post_response()` function, where the system incorrectly compares a newer network packet's data instead of the expected cached response. This error causes the challenge serial number comparison to always be false, preventing the system from correctly evaluating and potentially switching to newer network responses. This could lead to the system operating with outdated information or processing network communications incorrectly, potentially impacting the reliability of network services.

CWE

CWE-1025

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org