CVE-2024-50193 (GCVE-0-2024-50193)

Vulnerability from cvelistv5 – Published: 2024-11-08 05:54 – Updated: 2026-05-23 15:54
VLAI
Title
x86/entry_32: Clear CPU buffers after register restore in NMI return
Summary
In the Linux kernel, the following vulnerability has been resolved: x86/entry_32: Clear CPU buffers after register restore in NMI return CPU buffers are currently cleared after call to exc_nmi, but before register state is restored. This may be okay for MDS mitigation but not for RDFS. Because RDFS mitigation requires CPU buffers to be cleared when registers don't have any sensitive data. Move CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 50f021f0b985629accf10481a6e89af8b9700583 , < 6f44a5fc15b5cece0785bc07453db77d99b0a6de (git)
Affected: d54de9f2a127090f2017184e8257795b487d5312 , < b6400eb0b347821efc57760221f8fb6d63b9548a (git)
Affected: 2e3087505ddb8ba2d3d4c81306cca11e868fcdb9 , < 43778de19d2ef129636815274644b9c16e78c66b (git)
Affected: ca13d8cd8dac25558da4ee8df4dc70e8e7f9d762 , < 227358e89703c344008119be7e8ffa3fdb5b92de (git)
Affected: a0e2dab44d22b913b4c228c8b52b2a104434b0b3 , < 64adf22c4bc73ede920baca5defefb70f190cdbc (git)
Affected: a0e2dab44d22b913b4c228c8b52b2a104434b0b3 , < 48a2440d0f20c826b884e04377ccc1e4696c84e9 (git)
Affected: 51eca9f1fd047b500137d021f882d93f03280118 (git)
Affected: 5.10.215 , < 5.10.228 (semver)
Affected: 5.15.154 , < 5.15.169 (semver)
Affected: 6.1.81 , < 6.1.114 (semver)
Affected: 6.6.21 , < 6.6.58 (semver)
Affected: 6.7.9 , < 6.8 (semver)
Create a notification for this product.
Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 5.10.228 , ≤ 5.10.* (semver)
Unaffected: 5.15.169 , ≤ 5.15.* (semver)
Unaffected: 6.1.114 , ≤ 6.1.* (semver)
Unaffected: 6.6.58 , ≤ 6.6.* (semver)
Unaffected: 6.11.5 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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Mueva CLEAR_CPU_BUFFERS despu\u00e9s de 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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T14:13:05+00:00",
      "cve": "CVE-2024-50193",
      "id": "CVE-2024-50193",
      "initial_release_date": "2024-11-08T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: x86/entry_32: Clear CPU buffers after register restore in NMI return",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50193.json",
      "version": "3"
    },
    "vulnrichment": {
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[{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T20:18:11.990365Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T15:21:14.515Z\"}}], \"cna\": {\"title\": \"x86/entry_32: Clear CPU buffers after register restore in NMI return\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"50f021f0b985629accf10481a6e89af8b9700583\", \"lessThan\": \"6f44a5fc15b5cece0785bc07453db77d99b0a6de\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d54de9f2a127090f2017184e8257795b487d5312\", \"lessThan\": \"b6400eb0b347821efc57760221f8fb6d63b9548a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2e3087505ddb8ba2d3d4c81306cca11e868fcdb9\", \"lessThan\": \"43778de19d2ef129636815274644b9c16e78c66b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ca13d8cd8dac25558da4ee8df4dc70e8e7f9d762\", \"lessThan\": \"227358e89703c344008119be7e8ffa3fdb5b92de\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a0e2dab44d22b913b4c228c8b52b2a104434b0b3\", \"lessThan\": \"64adf22c4bc73ede920baca5defefb70f190cdbc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a0e2dab44d22b913b4c228c8b52b2a104434b0b3\", \"lessThan\": \"48a2440d0f20c826b884e04377ccc1e4696c84e9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"51eca9f1fd047b500137d021f882d93f03280118\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.10.215\", \"lessThan\": \"5.10.228\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.15.154\", \"lessThan\": \"5.15.169\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.1.81\", \"lessThan\": \"6.1.114\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.6.21\", \"lessThan\": \"6.6.58\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.7.9\", \"lessThan\": \"6.8\", \"versionType\": \"semver\"}], \"programFiles\": [\"arch/x86/entry/entry_32.S\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.8\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.228\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.169\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.114\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.58\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/x86/entry/entry_32.S\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/6f44a5fc15b5cece0785bc07453db77d99b0a6de\"}, {\"url\": \"https://git.kernel.org/stable/c/b6400eb0b347821efc57760221f8fb6d63b9548a\"}, {\"url\": \"https://git.kernel.org/stable/c/43778de19d2ef129636815274644b9c16e78c66b\"}, {\"url\": \"https://git.kernel.org/stable/c/227358e89703c344008119be7e8ffa3fdb5b92de\"}, {\"url\": \"https://git.kernel.org/stable/c/64adf22c4bc73ede920baca5defefb70f190cdbc\"}, {\"url\": \"https://git.kernel.org/stable/c/48a2440d0f20c826b884e04377ccc1e4696c84e9\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nx86/entry_32: Clear CPU buffers after register restore in NMI return\\n\\nCPU buffers are currently cleared after call to exc_nmi, but before\\nregister state is restored. This may be okay for MDS mitigation but not for\\nRDFS. Because RDFS mitigation requires CPU buffers to be cleared when\\nregisters don\u0027t have any sensitive data.\\n\\nMove CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.228\", \"versionStartIncluding\": \"5.10.215\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.169\", \"versionStartIncluding\": \"5.15.154\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.114\", \"versionStartIncluding\": \"6.1.81\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.58\", \"versionStartIncluding\": \"6.6.21\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.5\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.7.9\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:54:44.044Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50193\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:54:44.044Z\", \"dateReserved\": \"2024-10-21T19:36:19.967Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-11-08T05:54:08.464Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.