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CVE-2024-26705 (GCVE-0-2024-26705)

Vulnerability from cvelistv5 – Published: 2024-04-03 14:55 – Updated: 2026-05-11 20:02
VLAI
Title
parisc: BTLB: Fix crash when setting up BTLB at CPU bringup
Summary
In the Linux kernel, the following vulnerability has been resolved: parisc: BTLB: Fix crash when setting up BTLB at CPU bringup When using hotplug and bringing up a 32-bit CPU, ask the firmware about the BTLB information to set up the static (block) TLB entries. For that write access to the static btlb_info struct is needed, but since it is marked __ro_after_init the kernel segfaults with missing write permissions. Fix the crash by dropping the __ro_after_init annotation.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-03 17:48 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e5ef93d02d6c9cc3a14e7348481c9e41a528caa1 , < 54944f45470af5965fb9c28cf962ec30f38a8f5b (git)
Affected: e5ef93d02d6c9cc3a14e7348481c9e41a528caa1 , < aa52be55276614d33f22fbe7da36c40d6432d10b (git)
Affected: e5ef93d02d6c9cc3a14e7348481c9e41a528caa1 , < 913b9d443a0180cf0de3548f1ab3149378998486 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.18 , ≤ 6.6.* (semver)
Unaffected: 6.7.6 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:14:12.680Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26705\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-04-03T17:48:41.158959Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:21.671Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"parisc: BTLB: Fix crash when setting up BTLB at CPU bringup\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e5ef93d02d6c9cc3a14e7348481c9e41a528caa1\", \"lessThan\": \"54944f45470af5965fb9c28cf962ec30f38a8f5b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e5ef93d02d6c9cc3a14e7348481c9e41a528caa1\", \"lessThan\": \"aa52be55276614d33f22fbe7da36c40d6432d10b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e5ef93d02d6c9cc3a14e7348481c9e41a528caa1\", \"lessThan\": \"913b9d443a0180cf0de3548f1ab3149378998486\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/parisc/kernel/cache.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.18\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/parisc/kernel/cache.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b\"}, {\"url\": \"https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b\"}, {\"url\": \"https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nparisc: BTLB: Fix crash when setting up BTLB at CPU bringup\\n\\nWhen using hotplug and bringing up a 32-bit CPU, ask the firmware about the\\nBTLB information to set up the static (block) TLB entries.\\n\\nFor that write access to the static btlb_info struct is needed, but\\nsince it is marked __ro_after_init the kernel segfaults with missing\\nwrite permissions.\\n\\nFix the crash by dropping the __ro_after_init annotation.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.18\", \"versionStartIncluding\": \"6.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.6\", \"versionStartIncluding\": \"6.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"6.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:02:35.261Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26705\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:02:35.261Z\", \"dateReserved\": \"2024-02-19T14:20:24.158Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-03T14:55:08.733Z\", \"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.


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.