Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2024-27431

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
17/05/2024
Last modified:
23/12/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> cpumap: Zero-initialise xdp_rxq_info struct before running XDP program<br /> <br /> When running an XDP program that is attached to a cpumap entry, we don&amp;#39;t<br /> initialise the xdp_rxq_info data structure being used in the xdp_buff<br /> that backs the XDP program invocation. Tobias noticed that this leads to<br /> random values being returned as the xdp_md-&gt;rx_queue_index value for XDP<br /> programs running in a cpumap.<br /> <br /> This means we&amp;#39;re basically returning the contents of the uninitialised<br /> memory, which is bad. Fix this by zero-initialising the rxq data<br /> structure before running the XDP program.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.9 (including) 5.10.213 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.152 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 6.1.82 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.22 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.7.10 (excluding)
cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.8:rc7:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools