CVE-2024-27431 (GCVE-0-2024-27431)

Vulnerability from cvelistv5 – Published: 2024-05-17 12:02 – Updated: 2025-05-04 09:04
VLAI?
Title
cpumap: Zero-initialise xdp_rxq_info struct before running XDP program
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.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-908 - Use of Uninitialized Resource
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < 5f4e51abfbe6eb444fa91906a5cd083044278297 (git)
Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < f0363af9619c77730764f10360e36c6445c12f7b (git)
Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < 3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95 (git)
Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < f562e4c4aab00986dde3093c4be919c3f2b85a4a (git)
Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < eaa7cb836659ced2d9f814ac32aa3ec193803ed6 (git)
Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < 2487007aa3b9fafbd2cb14068f49791ce1d7ede5 (git)
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    Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.10.213 , ≤ 5.10.* (semver)
Unaffected: 5.15.152 , ≤ 5.15.* (semver)
Unaffected: 6.1.82 , ≤ 6.1.* (semver)
Unaffected: 6.6.22 , ≤ 6.6.* (semver)
Unaffected: 6.7.10 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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\"unaffected\", \"version\": \"5.15.152\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.82\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.22\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/bpf/cpumap.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297\"}, {\"url\": \"https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b\"}, {\"url\": \"https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95\"}, {\"url\": \"https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a\"}, {\"url\": \"https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6\"}, {\"url\": \"https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.213\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.152\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.82\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.22\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.10\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"5.9\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:04:51.900Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-27431\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:04:51.900Z\", \"dateReserved\": \"2024-02-25T13:47:42.686Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-17T12:02:10.274Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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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.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.



Detection rules are retrieved from Rulezet.