Race Condition Affecting kernel-64k-modules-core package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-CENTOS9-KERNEL64KMODULESCORE-8811753
  • published28 Feb 2025
  • disclosed21 Oct 2024

Introduced: 21 Oct 2024

CVE-2024-49864  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

There is no fixed version for Centos:9 kernel-64k-modules-core.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-modules-core package and not the kernel-64k-modules-core package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix a race between socket set up and I/O thread creation

In rxrpc_open_socket(), it sets up the socket and then sets up the I/O thread that will handle it. This is a problem, however, as there's a gap between the two phases in which a packet may come into rxrpc_encap_rcv() from the UDP packet but we oops when trying to wake the not-yet created I/O thread.

As a quick fix, just make rxrpc_encap_rcv() discard the packet if there's no I/O thread yet.

A better, but more intrusive fix would perhaps be to rearrange things such that the socket creation is done by the I/O thread.

CVSS Base Scores

version 3.1