FKIE_CVE-2024-27431

Vulnerability from fkie_nvd - Published: 2024-05-17 12:15 - Updated: 2025-12-23 18:45
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4aPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.8
linux linux_kernel 6.8
linux linux_kernel 6.8
linux linux_kernel 6.8
linux linux_kernel 6.8
linux linux_kernel 6.8
linux linux_kernel 6.8
debian debian_linux 10.0
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpumap: Zero-initialise xdp_rxq_info struct before running XDP program\n\nWhen running an XDP program that is attached to a cpumap entry, we don\u0027t\ninitialise the xdp_rxq_info data structure being used in the xdp_buff\nthat backs the XDP program invocation. Tobias noticed that this leads to\nrandom values being returned as the xdp_md-\u003erx_queue_index value for XDP\nprograms running in a cpumap.\n\nThis means we\u0027re basically returning the contents of the uninitialised\nmemory, which is bad. Fix this by zero-initialising the rxq data\nstructure before running the XDP program."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cpumap: Inicializa a cero la estructura xdp_rxq_info antes de ejecutar el programa XDP Cuando ejecutas un programa XDP que est\u00e1 adjunto a una entrada de cpumap, no inicializamos la estructura de datos xdp_rxq_info que se utiliza en xdp_buff que respalda la invocaci\u00f3n del programa XDP. Tobias not\u00f3 que esto lleva a que se devuelvan valores aleatorios como el valor xdp_md-\u0026gt;rx_queue_index para programas XDP que se ejecutan en un cpumap. Esto significa que b\u00e1sicamente estamos devolviendo el contenido de la memoria no inicializada, lo cual es malo. Solucione este problema inicializando a cero la estructura de datos rxq antes de ejecutar el programa XDP."
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  "id": "CVE-2024-27431",
  "lastModified": "2025-12-23T18:45:11.150",
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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