CVE-2024-40948 (GCVE-0-2024-40948)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:31 – Updated: 2026-05-11 20:22
VLAI
Title
mm/page_table_check: fix crash on ZONE_DEVICE
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/page_table_check: fix crash on ZONE_DEVICE Not all pages may apply to pgtable check. One example is ZONE_DEVICE pages: they map PFNs directly, and they don't allocate page_ext at all even if there's struct page around. One may reference devm_memremap_pages(). When both ZONE_DEVICE and page-table-check enabled, then try to map some dax memories, one can trigger kernel bug constantly now when the kernel was trying to inject some pfn maps on the dax device: kernel BUG at mm/page_table_check.c:55! While it's pretty legal to use set_pxx_at() for ZONE_DEVICE pages for page fault resolutions, skip all the checks if page_ext doesn't even exist in pgtable checker, which applies to ZONE_DEVICE but maybe more.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: df4e817b710809425d899340dbfa8504a3ca4ba5 , < 51897f99351fff7b57f4f141940fa93b4e90fd2b (git)
Affected: df4e817b710809425d899340dbfa8504a3ca4ba5 , < 84d3549d54f5ff9fa3281257be3019386f51d1a0 (git)
Affected: df4e817b710809425d899340dbfa8504a3ca4ba5 , < dec2382247860d2134c8d41e103e26460c099629 (git)
Affected: df4e817b710809425d899340dbfa8504a3ca4ba5 , < 8bb592c2eca8fd2bc06db7d80b38da18da4a2f43 (git)
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Linux Linux Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 6.1.96 , ≤ 6.1.* (semver)
Unaffected: 6.6.36 , ≤ 6.6.* (semver)
Unaffected: 6.9.7 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/51897f99351fff7b57f4f141940fa93b4e90fd2b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/84d3549d54f5ff9fa3281257be3019386f51d1a0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/dec2382247860d2134c8d41e103e26460c099629\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/8bb592c2eca8fd2bc06db7d80b38da18da4a2f43\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T04:39:55.324Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-40948\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:04:08.155956Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:22.516Z\"}}], \"cna\": {\"title\": \"mm/page_table_check: fix crash on ZONE_DEVICE\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"df4e817b710809425d899340dbfa8504a3ca4ba5\", \"lessThan\": \"51897f99351fff7b57f4f141940fa93b4e90fd2b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"df4e817b710809425d899340dbfa8504a3ca4ba5\", \"lessThan\": \"84d3549d54f5ff9fa3281257be3019386f51d1a0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"df4e817b710809425d899340dbfa8504a3ca4ba5\", \"lessThan\": \"dec2382247860d2134c8d41e103e26460c099629\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"df4e817b710809425d899340dbfa8504a3ca4ba5\", \"lessThan\": \"8bb592c2eca8fd2bc06db7d80b38da18da4a2f43\", \"versionType\": \"git\"}], \"programFiles\": [\"mm/page_table_check.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.17\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.17\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.96\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.36\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"mm/page_table_check.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/51897f99351fff7b57f4f141940fa93b4e90fd2b\"}, {\"url\": \"https://git.kernel.org/stable/c/84d3549d54f5ff9fa3281257be3019386f51d1a0\"}, {\"url\": \"https://git.kernel.org/stable/c/dec2382247860d2134c8d41e103e26460c099629\"}, {\"url\": \"https://git.kernel.org/stable/c/8bb592c2eca8fd2bc06db7d80b38da18da4a2f43\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/page_table_check: fix crash on ZONE_DEVICE\\n\\nNot all pages may apply to pgtable check.  One example is ZONE_DEVICE\\npages: they map PFNs directly, and they don\u0027t allocate page_ext at all\\neven if there\u0027s struct page around.  One may reference\\ndevm_memremap_pages().\\n\\nWhen both ZONE_DEVICE and page-table-check enabled, then try to map some\\ndax memories, one can trigger kernel bug constantly now when the kernel\\nwas trying to inject some pfn maps on the dax device:\\n\\n kernel BUG at mm/page_table_check.c:55!\\n\\nWhile it\u0027s pretty legal to use set_pxx_at() for ZONE_DEVICE pages for page\\nfault resolutions, skip all the checks if page_ext doesn\u0027t even exist in\\npgtable checker, which applies to ZONE_DEVICE but maybe more.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.96\", \"versionStartIncluding\": \"5.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.36\", \"versionStartIncluding\": \"5.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.7\", \"versionStartIncluding\": \"5.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"5.17\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:18:34.368Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-40948\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:18:34.368Z\", \"dateReserved\": \"2024-07-12T12:17:45.591Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:31:53.478Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.