In the Linux kernel, the following vulnerability has been resolved: cpumap: Zero-initialise xdp_rxq_info struct before running XDP program When running an XDP program that is attached to a cpumap entry, we don't initialise the xdp_rxq_info data structure being used in the xdp_buff that backs the XDP program invocation. Tobias noticed that this leads to random values being returned as the xdp_md->rx_queue_index value for XDP programs running in a cpumap. This means we're basically returning the contents of the uninitialised memory, which is bad. Fix this by zero-initialising the rxq data structure before running the XDP program.
History

Wed, 13 Nov 2024 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat enterprise Linux
CPEs cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-17T12:02:10.274Z

Updated: 2024-11-05T09:21:54.430Z

Reserved: 2024-02-25T13:47:42.686Z

Link: CVE-2024-27431

cve-icon Vulnrichment

Updated: 2024-08-02T00:34:52.315Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-05-17T12:15:16.410

Modified: 2024-11-21T09:04:35.510

Link: CVE-2024-27431

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-17T00:00:00Z

Links: CVE-2024-27431 - Bugzilla