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CVE-2024-46682 (GCVE-0-2024-46682)

Vulnerability from cvelistv5 – Published: 2024-09-13 05:29 – Updated: 2026-05-11 20:34
VLAI
Title
nfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open
Summary
In the Linux kernel, the following vulnerability has been resolved: nfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open Prior to commit 3f29cc82a84c ("nfsd: split sc_status out of sc_type") states_show() relied on sc_type field to be of valid type before calling into a subfunction to show content of a particular stateid. From that commit, we split the validity of the stateid into sc_status and no longer changed sc_type to 0 while unhashing the stateid. This resulted in kernel oopsing for nfsv4.0 opens that stay around and in nfs4_show_open() would derefence sc_file which was NULL. Instead, for closed open stateids forgo displaying information that relies of having a valid sc_file. To reproduce: mount the server with 4.0, read and close a file and then on the server cat /proc/fs/nfsd/clients/2/states [ 513.590804] Call trace: [ 513.590925] _raw_spin_lock+0xcc/0x160 [ 513.591119] nfs4_show_open+0x78/0x2c0 [nfsd] [ 513.591412] states_show+0x44c/0x488 [nfsd] [ 513.591681] seq_read_iter+0x5d8/0x760 [ 513.591896] seq_read+0x188/0x208 [ 513.592075] vfs_read+0x148/0x470 [ 513.592241] ksys_read+0xcc/0x178
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-29 15:09 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3f29cc82a84c23cfd12b903029dd26002ca825f5 , < ba0b697de298285301c71c258598226e06494236 (git)
Affected: 3f29cc82a84c23cfd12b903029dd26002ca825f5 , < a204501e1743d695ca2930ed25a2be9f8ced96d3 (git)
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Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.10.8 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
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This resulted in kernel oopsing\\nfor nfsv4.0 opens that stay around and in nfs4_show_open()\\nwould derefence sc_file which was NULL.\\n\\nInstead, for closed open stateids forgo displaying information\\nthat relies of having a valid sc_file.\\n\\nTo reproduce: mount the server with 4.0, read and close\\na file and then on the server cat /proc/fs/nfsd/clients/2/states\\n\\n[  513.590804] Call trace:\\n[  513.590925]  _raw_spin_lock+0xcc/0x160\\n[  513.591119]  nfs4_show_open+0x78/0x2c0 [nfsd]\\n[  513.591412]  states_show+0x44c/0x488 [nfsd]\\n[  513.591681]  seq_read_iter+0x5d8/0x760\\n[  513.591896]  seq_read+0x188/0x208\\n[  513.592075]  vfs_read+0x148/0x470\\n[  513.592241]  ksys_read+0xcc/0x178\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfsd: evitar p\u00e1nico para archivos cerrados nfsv4.0 en nfs4_show_open Antes del commit 3f29cc82a84c (\\\"nfsd: separar sc_status de sc_type\\\") states_show() depend\u00eda de que el campo sc_type fuera de un tipo v\u00e1lido antes de llamar a una subfunci\u00f3n para mostrar el contenido de un stateid en particular. 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Para reproducir: monte el servidor con 4.0, lea y cierre un archivo y luego en el servidor cat /proc/fs/nfsd/clients/2/states [ 513.590804] Rastreo de llamadas: [ 513.590925] _raw_spin_lock+0xcc/0x160 [ 513.591119] nfs4_show_open+0x78/0x2c0 [nfsd] [ 513.591412] states_show+0x44c/0x488 [nfsd] [ 513.591681] seq_read_iter+0x5d8/0x760 [ 513.591896] seq_read+0x188/0x208 [ 513.592075] vfs_read+0x148/0x470 [513.592241] ksys_read+0xcc/0x178\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/nfsd/nfs4state.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3f29cc82a84c23cfd12b903029dd26002ca825f5\",\"lessThan\":\"ba0b697de298285301c71c258598226e06494236\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3f29cc82a84c23cfd12b903029dd26002ca825f5\",\"lessThan\":\"a204501e1743d695ca2930ed25a2be9f8ced96d3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/nfsd/nfs4state.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10.8\",\"lessThanOrEqual\":\"6.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-29T15:09:15.742949Z\",\"id\":\"CVE-2024-46682\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.9\",\"versionEndExcluding\":\"6.10.8\",\"matchCriteriaId\":\"0BCC4AEF-4876-4CFA-B9D6-F98855E75E74\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8383ABF-1457-401F-9B61-EE50F4C61F4F\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a204501e1743d695ca2930ed25a2be9f8ced96d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ba0b697de298285301c71c258598226e06494236\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
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      "title": "SUSE CVE CVE-2024-46682",
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    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-46682\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-29T15:09:15.742949Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-29T15:09:19.833Z\"}}], \"cna\": {\"title\": \"nfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3f29cc82a84c\", \"lessThan\": \"ba0b697de298\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3f29cc82a84c\", \"lessThan\": \"a204501e1743\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/nfsd/nfs4state.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.9\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.9\", \"versionType\": \"custom\"}, {\"status\": \"unaffected\", \"version\": \"6.10.8\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/nfsd/nfs4state.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ba0b697de298285301c71c258598226e06494236\"}, {\"url\": \"https://git.kernel.org/stable/c/a204501e1743d695ca2930ed25a2be9f8ced96d3\"}], \"x_generator\": {\"engine\": \"bippy-c9c4e1df01b2\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open\\n\\nPrior to commit 3f29cc82a84c (\\\"nfsd: split sc_status out of\\nsc_type\\\") states_show() relied on sc_type field to be of valid\\ntype before calling into a subfunction to show content of a\\nparticular stateid. From that commit, we split the validity of\\nthe stateid into sc_status and no longer changed sc_type to 0\\nwhile unhashing the stateid. This resulted in kernel oopsing\\nfor nfsv4.0 opens that stay around and in nfs4_show_open()\\nwould derefence sc_file which was NULL.\\n\\nInstead, for closed open stateids forgo displaying information\\nthat relies of having a valid sc_file.\\n\\nTo reproduce: mount the server with 4.0, read and close\\na file and then on the server cat /proc/fs/nfsd/clients/2/states\\n\\n[  513.590804] Call trace:\\n[  513.590925]  _raw_spin_lock+0xcc/0x160\\n[  513.591119]  nfs4_show_open+0x78/0x2c0 [nfsd]\\n[  513.591412]  states_show+0x44c/0x488 [nfsd]\\n[  513.591681]  seq_read_iter+0x5d8/0x760\\n[  513.591896]  seq_read+0x188/0x208\\n[  513.592075]  vfs_read+0x148/0x470\\n[  513.592241]  ksys_read+0xcc/0x178\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-09-15T17:57:33.294Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-46682\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-09-29T15:09:29.944Z\", \"dateReserved\": \"2024-09-11T15:12:18.248Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-13T05:29:15.294Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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

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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.