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CVE-2024-27431 The advisory has been revoked - it doesn't affect any version of package kernel-cross-headers  (opens in a new tab)

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0.01% (3rd percentile)

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  • Snyk IDSNYK-RHEL9-KERNELCROSSHEADERS-12454753
  • published3 Sept 2025
  • disclosed17 May 2024
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Introduced: 17 May 2024

CVE-2024-27431  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-cross-headers package and not the kernel-cross-headers package as distributed by RHEL.

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.