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CVE-2023-52732 (GCVE-0-2023-52732)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:22 – Updated: 2026-08-05 09:11
VLAI
Title
ceph: blocklist the kclient when receiving corrupted snap trace
Summary
In the Linux kernel, the following vulnerability has been resolved: ceph: blocklist the kclient when receiving corrupted snap trace When received corrupted snap trace we don't know what exactly has happened in MDS side. And we shouldn't continue IOs and metadatas access to MDS, which may corrupt or get incorrect contents. This patch will just block all the further IO/MDS requests immediately and then evict the kclient itself. The reason why we still need to evict the kclient just after blocking all the further IOs is that the MDS could revoke the caps faster.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-21 17:31 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9030aaf9bf0a1eee47a154c316c789e959638b0f , < 66ec619e4591f8350f99c5269a7ce160cccc7a7c (git)
Affected: 9030aaf9bf0a1eee47a154c316c789e959638b0f , < a68e564adcaa69b0930809fb64d9d5f7d9c32ba9 (git)
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Linux Linux Affected: 2.6.34
Unaffected: 0 , < 2.6.34 (semver)
Unaffected: 6.1.13 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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that is full integrity loss of CephFS snap data.\\nA:H - Real reports show client hangs requiring reboot after corrupt snap traces, and continuing with inconsistent snap state can hit BUG_ON(!i_head_snapc) and related crash paths, so availability impact is High.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"9030aaf9bf0a1eee47a154c316c789e959638b0f\", \"lessThan\": \"66ec619e4591f8350f99c5269a7ce160cccc7a7c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9030aaf9bf0a1eee47a154c316c789e959638b0f\", \"lessThan\": \"a68e564adcaa69b0930809fb64d9d5f7d9c32ba9\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/ceph/addr.c\", \"fs/ceph/caps.c\", \"fs/ceph/file.c\", \"fs/ceph/mds_client.c\", \"fs/ceph/snap.c\", \"fs/ceph/super.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.34\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.34\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/ceph/addr.c\", \"fs/ceph/caps.c\", \"fs/ceph/file.c\", \"fs/ceph/mds_client.c\", \"fs/ceph/snap.c\", \"fs/ceph/super.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/66ec619e4591f8350f99c5269a7ce160cccc7a7c\"}, {\"url\": \"https://git.kernel.org/stable/c/a68e564adcaa69b0930809fb64d9d5f7d9c32ba9\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nceph: blocklist the kclient when receiving corrupted snap trace\\n\\nWhen received corrupted snap trace we don\u0027t know what exactly has\\nhappened in MDS side. And we shouldn\u0027t continue IOs and metadatas\\naccess to MDS, which may corrupt or get incorrect contents.\\n\\nThis patch will just block all the further IO/MDS requests\\nimmediately and then evict the kclient itself.\\n\\nThe reason why we still need to evict the kclient just after\\nblocking all the further IOs is that the MDS could revoke the caps\\nfaster.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.13\", \"versionStartIncluding\": \"2.6.34\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2\", \"versionStartIncluding\": \"2.6.34\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T09:11:08.351Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52732\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T09:11:08.351Z\", \"dateReserved\": \"2024-05-21T15:19:24.232Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T15:22:57.926Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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.


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.