CVE-2024-46689 (GCVE-0-2024-46689)

Vulnerability from cvelistv5 – Published: 2024-09-13 05:29 – Updated: 2026-05-11 20:34
VLAI
Title
soc: qcom: cmd-db: Map shared memory as WC, not WB
Summary
In the Linux kernel, the following vulnerability has been resolved: soc: qcom: cmd-db: Map shared memory as WC, not WB Linux does not write into cmd-db region. This region of memory is write protected by XPU. XPU may sometime falsely detect clean cache eviction as "write" into the write protected region leading to secure interrupt which causes an endless loop somewhere in Trust Zone. The only reason it is working right now is because Qualcomm Hypervisor maps the same region as Non-Cacheable memory in Stage 2 translation tables. The issue manifests if we want to use another hypervisor (like Xen or KVM), which does not know anything about those specific mappings. Changing the mapping of cmd-db memory from MEMREMAP_WB to MEMREMAP_WT/WC removes dependency on correct mappings in Stage 2 tables. This patch fixes the issue by updating the mapping to MEMREMAP_WC. I tested this on SA8155P with Xen.
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: 312416d9171a1460b7ed8d182b5b540c910ce80d , < 0ee9594c974368a17e85a431e9fe1c14fb65c278 (git)
Affected: 312416d9171a1460b7ed8d182b5b540c910ce80d , < f5a5a5a0e95f36e2792d48e6e4b64e665eb01374 (git)
Affected: 312416d9171a1460b7ed8d182b5b540c910ce80d , < eaff392c1e34fb77cc61505a31b0191e5e46e271 (git)
Affected: 312416d9171a1460b7ed8d182b5b540c910ce80d , < d9d48d70e922b272875cda60d2ada89291c840cf (git)
Affected: 312416d9171a1460b7ed8d182b5b540c910ce80d , < ef80520be0ff78ae5ed44cb6eee1525e65bebe70 (git)
Affected: 312416d9171a1460b7ed8d182b5b540c910ce80d , < 62c2d63605ca25b5db78a347ed303c0a0a77d5b4 (git)
Affected: 312416d9171a1460b7ed8d182b5b540c910ce80d , < f9bb896eab221618927ae6a2f1d566567999839d (git)
Create a notification for this product.
Linux Linux Affected: 4.18
Unaffected: 0 , < 4.18 (semver)
Unaffected: 5.4.283 , ≤ 5.4.* (semver)
Unaffected: 5.10.225 , ≤ 5.10.* (semver)
Unaffected: 5.15.166 , ≤ 5.15.* (semver)
Unaffected: 6.1.108 , ≤ 6.1.* (semver)
Unaffected: 6.6.49 , ≤ 6.6.* (semver)
Unaffected: 6.10.8 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "soc: qcom: cmd-db: Map shared memory as WC not WB",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-46689.json",
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The issue manifests if we want to use another hypervisor (like\\nXen or KVM), which does not know anything about those specific mappings.\\n\\nChanging the mapping of cmd-db memory from MEMREMAP_WB to MEMREMAP_WT/WC\\nremoves dependency on correct mappings in Stage 2 tables. This patch\\nfixes the issue by updating the mapping to MEMREMAP_WC.\\n\\nI tested this on SA8155P with Xen.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: soc: qcom: cmd-db: Asignar memoria compartida como WC, no como WB Linux no escribe en la regi\u00f3n cmd-db. Esta regi\u00f3n de memoria est\u00e1 protegida contra escritura por XPU. En ocasiones, XPU puede detectar err\u00f3neamente la expulsi\u00f3n de cach\u00e9 limpia como \\\"escritura\\\" en la regi\u00f3n protegida contra escritura, lo que genera una interrupci\u00f3n segura que provoca un bucle sin fin en alg\u00fan lugar de la Zona de confianza. La \u00fanica raz\u00f3n por la que funciona en este momento es porque Qualcomm Hypervisor asigna la misma regi\u00f3n que la memoria no almacenable en cach\u00e9 en las tablas de traducci\u00f3n de la Etapa 2. El problema se manifiesta si queremos usar otro hipervisor (como Xen o KVM), que no sabe nada sobre esas asignaciones espec\u00edficas. Cambiar la asignaci\u00f3n de memoria cmd-db de MEMREMAP_WB a MEMREMAP_WT/WC elimina la dependencia de las asignaciones correctas en las tablas de la Etapa 2. Este parche corrige el problema actualizando la asignaci\u00f3n a MEMREMAP_WC. Prob\u00e9 esto en SA8155P con Xen.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/soc/qcom/cmd-db.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"312416d9171a1460b7ed8d182b5b540c910ce80d\",\"lessThan\":\"0ee9594c974368a17e85a431e9fe1c14fb65c278\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"312416d9171a1460b7ed8d182b5b540c910ce80d\",\"lessThan\":\"f5a5a5a0e95f36e2792d48e6e4b64e665eb01374\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"312416d9171a1460b7ed8d182b5b540c910ce80d\",\"lessThan\":\"eaff392c1e34fb77cc61505a31b0191e5e46e271\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"312416d9171a1460b7ed8d182b5b540c910ce80d\",\"lessThan\":\"d9d48d70e922b272875cda60d2ada89291c840cf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"312416d9171a1460b7ed8d182b5b540c910ce80d\",\"lessThan\":\"ef80520be0ff78ae5ed44cb6eee1525e65bebe70\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"312416d9171a1460b7ed8d182b5b540c910ce80d\",\"lessThan\":\"62c2d63605ca25b5db78a347ed303c0a0a77d5b4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"312416d9171a1460b7ed8d182b5b540c910ce80d\",\"lessThan\":\"f9bb896eab221618927ae6a2f1d566567999839d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/soc/qcom/cmd-db.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.283\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.225\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.166\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.108\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.49\",\"lessThanOrEqual\":\"6.6.*\",\"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\":\"2024-09-29T15:07:23.732311Z\",\"id\":\"CVE-2024-46689\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:27:51+00:00",
      "cve": "CVE-2024-46689",
      "id": "CVE-2024-46689",
      "initial_release_date": "2024-09-13T00:00:00+00:00",
      "product_status:fixed": "930",
      "product_status:known_affected": "98",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: soc: qcom: cmd-db: Map shared memory as WC, not WB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-46689.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-15T19:27:24Z",
      "cve": "CVE-2024-46689",
      "id": "CVE-2024-46689",
      "initial_release_date": "2024-09-14T02:51:20Z",
      "product_status:known_affected": "468",
      "product_status:known_not_affected": "113",
      "product_status:recommended": "659",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-46689",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-46689.json",
      "version": "52"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:16:27.670Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-46689\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-29T15:07:23.732311Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-29T15:07:27.872Z\"}}], \"cna\": {\"title\": \"soc: qcom: cmd-db: Map shared memory as WC, not WB\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"312416d9171a1460b7ed8d182b5b540c910ce80d\", \"lessThan\": \"0ee9594c974368a17e85a431e9fe1c14fb65c278\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"312416d9171a1460b7ed8d182b5b540c910ce80d\", \"lessThan\": \"f5a5a5a0e95f36e2792d48e6e4b64e665eb01374\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"312416d9171a1460b7ed8d182b5b540c910ce80d\", \"lessThan\": \"eaff392c1e34fb77cc61505a31b0191e5e46e271\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"312416d9171a1460b7ed8d182b5b540c910ce80d\", \"lessThan\": \"d9d48d70e922b272875cda60d2ada89291c840cf\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"312416d9171a1460b7ed8d182b5b540c910ce80d\", \"lessThan\": \"ef80520be0ff78ae5ed44cb6eee1525e65bebe70\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"312416d9171a1460b7ed8d182b5b540c910ce80d\", \"lessThan\": \"62c2d63605ca25b5db78a347ed303c0a0a77d5b4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"312416d9171a1460b7ed8d182b5b540c910ce80d\", \"lessThan\": \"f9bb896eab221618927ae6a2f1d566567999839d\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/soc/qcom/cmd-db.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.18\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.18\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.283\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.225\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.166\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.108\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.49\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/soc/qcom/cmd-db.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0ee9594c974368a17e85a431e9fe1c14fb65c278\"}, {\"url\": \"https://git.kernel.org/stable/c/f5a5a5a0e95f36e2792d48e6e4b64e665eb01374\"}, {\"url\": \"https://git.kernel.org/stable/c/eaff392c1e34fb77cc61505a31b0191e5e46e271\"}, {\"url\": \"https://git.kernel.org/stable/c/d9d48d70e922b272875cda60d2ada89291c840cf\"}, {\"url\": \"https://git.kernel.org/stable/c/ef80520be0ff78ae5ed44cb6eee1525e65bebe70\"}, {\"url\": \"https://git.kernel.org/stable/c/62c2d63605ca25b5db78a347ed303c0a0a77d5b4\"}, {\"url\": \"https://git.kernel.org/stable/c/f9bb896eab221618927ae6a2f1d566567999839d\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsoc: qcom: cmd-db: Map shared memory as WC, not WB\\n\\nLinux does not write into cmd-db region. This region of memory is write\\nprotected by XPU. XPU may sometime falsely detect clean cache eviction\\nas \\\"write\\\" into the write protected region leading to secure interrupt\\nwhich causes an endless loop somewhere in Trust Zone.\\n\\nThe only reason it is working right now is because Qualcomm Hypervisor\\nmaps the same region as Non-Cacheable memory in Stage 2 translation\\ntables. The issue manifests if we want to use another hypervisor (like\\nXen or KVM), which does not know anything about those specific mappings.\\n\\nChanging the mapping of cmd-db memory from MEMREMAP_WB to MEMREMAP_WT/WC\\nremoves dependency on correct mappings in Stage 2 tables. This patch\\nfixes the issue by updating the mapping to MEMREMAP_WC.\\n\\nI tested this on SA8155P with Xen.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.283\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.225\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.166\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.108\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.49\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.8\", \"versionStartIncluding\": \"4.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"4.18\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:31:57.015Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-46689\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T22:16:27.670Z\", \"dateReserved\": \"2024-09-11T15:12:18.249Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-13T05:29:19.713Z\", \"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

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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.