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CVE-2024-27431

MEDIUM
Published 2024-05-17T12:02:10.274Z
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Expert Analysis

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CVSS Score

V3.1
5.5
/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.019
Higher than 1.9% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

9216477449f33cdbc9c9a99d49f500b7fbb81702 9216477449f33cdbc9c9a99d49f500b7fbb81702 9216477449f33cdbc9c9a99d49f500b7fbb81702 9216477449f33cdbc9c9a99d49f500b7fbb81702 9216477449f33cdbc9c9a99d49f500b7fbb81702 9216477449f33cdbc9c9a99d49f500b7fbb81702
Linux

Linux

Affected Versions:

5.9 0 5.10.213 5.15.152 6.1.82 6.6.22 6.7.10 6.8
linux

linux_kernel

Affected Versions:

9216477449f3
linux

linux_kernel

Affected Versions:

5.9
linux

linux_kernel

Affected Versions:

0
linux

linux_kernel

Affected Versions:

5.10.213
linux

linux_kernel

Affected Versions:

5.15.152
linux

linux_kernel

Affected Versions:

6.1.82
linux

linux_kernel

Affected Versions:

6.6.22
linux

linux_kernel

Affected Versions:

6.7.10
linux

linux_kernel

Affected Versions:

6.8

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-4h53-xcvw-8wpx

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-27431
WEB https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5
WEB https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95
WEB https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297
WEB https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6
WEB https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b
WEB https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a
WEB https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html

Advisory provided by GitHub Security Advisory Database. Published: May 17, 2024, Modified: July 3, 2024

References

https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297
https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b
https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95
https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a
https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6
https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5
Published: 2024-05-17T12:02:10.274Z
Last Modified: 2025-05-04T09:04:51.900Z
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