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CVE-2023-52893 (GCVE-0-2023-52893)

Vulnerability from cvelistv5 – Published: 2024-08-21 06:10 – Updated: 2026-05-11 19:35
VLAI
Title
gsmi: fix null-deref in gsmi_get_variable
Summary
In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmi_get_variable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore access layer") added a new get_variable call with attr=NULL, which triggers panic in gsmi.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:03 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 74c5b31c6618f01079212332b2e5f6c42f2d6307 , < ee5763ef829bd923033510de6d1df7c73f085e4b (git)
Affected: 74c5b31c6618f01079212332b2e5f6c42f2d6307 , < 32313c11bdc8a02c577abaf865be3664ab30410a (git)
Affected: 74c5b31c6618f01079212332b2e5f6c42f2d6307 , < ffef77794fb5f1245c3249b86342bad2299accb5 (git)
Affected: 74c5b31c6618f01079212332b2e5f6c42f2d6307 , < ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd (git)
Affected: 74c5b31c6618f01079212332b2e5f6c42f2d6307 , < eb0421d90f916dffe96b4c049ddf01c0c50620d2 (git)
Affected: 74c5b31c6618f01079212332b2e5f6c42f2d6307 , < 6646d769fdb0ce4318ef9afd127f8526d1ca8393 (git)
Affected: 74c5b31c6618f01079212332b2e5f6c42f2d6307 , < a769b05eeed7accc4019a1ed9799dd72067f1ce8 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.0
Unaffected: 0 , < 3.0 (semver)
Unaffected: 4.14.304 , ≤ 4.14.* (semver)
Unaffected: 4.19.271 , ≤ 4.19.* (semver)
Unaffected: 5.4.230 , ≤ 5.4.* (semver)
Unaffected: 5.10.165 , ≤ 5.10.* (semver)
Unaffected: 5.15.90 , ≤ 5.15.* (semver)
Unaffected: 6.1.8 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52893\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T16:03:53.149409Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:18.608Z\"}}], \"cna\": {\"title\": \"gsmi: fix null-deref in gsmi_get_variable\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"74c5b31c6618f01079212332b2e5f6c42f2d6307\", \"lessThan\": \"ee5763ef829bd923033510de6d1df7c73f085e4b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74c5b31c6618f01079212332b2e5f6c42f2d6307\", \"lessThan\": \"32313c11bdc8a02c577abaf865be3664ab30410a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74c5b31c6618f01079212332b2e5f6c42f2d6307\", \"lessThan\": \"ffef77794fb5f1245c3249b86342bad2299accb5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74c5b31c6618f01079212332b2e5f6c42f2d6307\", \"lessThan\": \"ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74c5b31c6618f01079212332b2e5f6c42f2d6307\", \"lessThan\": \"eb0421d90f916dffe96b4c049ddf01c0c50620d2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74c5b31c6618f01079212332b2e5f6c42f2d6307\", \"lessThan\": \"6646d769fdb0ce4318ef9afd127f8526d1ca8393\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74c5b31c6618f01079212332b2e5f6c42f2d6307\", \"lessThan\": \"a769b05eeed7accc4019a1ed9799dd72067f1ce8\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/firmware/google/gsmi.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.14.304\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.271\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.230\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.165\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.90\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/firmware/google/gsmi.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4b\"}, {\"url\": \"https://git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410a\"}, {\"url\": \"https://git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5\"}, {\"url\": \"https://git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd\"}, {\"url\": \"https://git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2\"}, {\"url\": \"https://git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393\"}, {\"url\": \"https://git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ngsmi: fix null-deref in gsmi_get_variable\\n\\nWe can get EFI variables without fetching the attribute, so we must\\nallow for that in gsmi.\\n\\ncommit 859748255b43 (\\\"efi: pstore: Omit efivars caching EFI varstore\\naccess layer\\\") added a new get_variable call with attr=NULL, which\\ntriggers panic in gsmi.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:28:01.009Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52893\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:28:01.009Z\", \"dateReserved\": \"2024-08-21T06:07:11.013Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-21T06:10:33.043Z\", \"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

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.