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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 · CISA-ADP (v2.0.3)
Decision recorded 2024-09-29 15:07 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
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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)
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              "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"
            }
          ],
          "title": "soc: qcom: cmd-db: Map shared memory as WC, not WB",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-46689",
        "datePublished": "2024-09-13T05:29:19.713Z",
        "dateReserved": "2024-09-11T15:12:18.249Z",
        "dateUpdated": "2025-11-03T22:16:27.670Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
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.