CVE-2024-49864

medium

Description

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.

References

https://git.kernel.org/stable/c/cdf4bbbdb956d7426f687f38757ebca2a2759a0f

https://git.kernel.org/stable/c/c64f5fc95e9612fdf75587c8e21e494e614c18e2

https://git.kernel.org/stable/c/bc212465326e8587325f520a052346f0b57360e6

https://git.kernel.org/stable/c/56e415202b8a17de6496f4023e545fcb66f118ec

Details

Source: Mitre, NVD

Published: 2024-10-21

Updated: 2024-11-13

Risk Information

CVSS v2

Base Score: 3.8

Vector: CVSS2#AV:L/AC:H/Au:S/C:N/I:N/A:C

Severity: Low

CVSS v3

Base Score: 4.7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium