cpumap: Zero-initialise xdp_rxq_info struct before running XDP program

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-27431
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-17 12:15:16 UTC
Updated2026-05-12 12:16:33 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: NVD-CWE-noinfo | CWE-908 | CWE-908 CWE-908 Use of Uninitialized Resource

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9216477449f33cdbc9c9a99d49f500b7fbb81702 5f4e51abfbe6eb444fa91906a5cd083044278297 git Not specified
CNA Linux Linux affected 9216477449f33cdbc9c9a99d49f500b7fbb81702 f0363af9619c77730764f10360e36c6445c12f7b git Not specified
CNA Linux Linux affected 9216477449f33cdbc9c9a99d49f500b7fbb81702 3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95 git Not specified
CNA Linux Linux affected 9216477449f33cdbc9c9a99d49f500b7fbb81702 f562e4c4aab00986dde3093c4be919c3f2b85a4a git Not specified
CNA Linux Linux affected 9216477449f33cdbc9c9a99d49f500b7fbb81702 eaa7cb836659ced2d9f814ac32aa3ec193803ed6 git Not specified
CNA Linux Linux affected 9216477449f33cdbc9c9a99d49f500b7fbb81702 2487007aa3b9fafbd2cb14068f49791ce1d7ede5 git Not specified
CNA Linux Linux affected 5.9 Not specified
CNA Linux Linux unaffected 5.9 semver Not specified
CNA Linux Linux unaffected 5.10.213 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.152 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.82 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.22 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.10 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8 * original_commit_for_fix Not specified
ADP Linux Linux Kernel affected 9216477449f3 Not specified
ADP Linux Linux Kernel affected 5.9 Not specified
ADP Linux Linux Kernel unaffected Not specified
ADP Linux Linux Kernel unaffected 5.10.213 Not specified
ADP Linux Linux Kernel unaffected 5.15.152 Not specified
ADP Linux Linux Kernel unaffected 6.1.82 Not specified
ADP Linux Linux Kernel unaffected 6.6.22 Not specified
ADP Linux Linux Kernel unaffected 6.7.10 Not specified
ADP Linux Linux Kernel unaffected 6.8 Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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