CVE-2026-23443 (GCVE-0-2026-23443)
Vulnerability from cvelistv5
Published
2026-04-03 15:15
Modified
2026-04-18 08:58
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: Fix previous acpi_processor_errata_piix4() fix After commi f132e089fe89 ("ACPI: processor: Fix NULL-pointer dereference in acpi_processor_errata_piix4()"), device pointers may be dereferenced after dropping references to the device objects pointed to by them, which may cause a use-after-free to occur. Moreover, debug messages about enabling the errata may be printed if the errata flags corresponding to them are unset. Address all of these issues by moving message printing to the points in the code where the errata flags are set.
References
Impacted products
Vendor Product Version
Linux Linux Version: 06724a60cfa9767ea90b0f5d3dfb5cdd251b64f5
Version: ad86ac604f8391c0212a91412d4f764c7a85f254
Version: 01e8751b37a366b1ca561add0042f2ceb18c03bf
Version: b803811485ac0b2f774b6bf3abc8b999ba3b7033
Version: 29f60d3d06818d40118a30d663231f027ae87a05
Version: 0398b641be2b66c2fc7e0163c606ef19372e7ad5
Version: f132e089fe89cadc2098991f0a3cb05c3f824ac6
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   Linux Linux Version: 5.15.202   ≤
Version: 6.1.165   ≤
Version: 6.6.128   ≤
Version: 6.12.75   ≤
Version: 6.18.16   ≤
Version: 6.19.6   ≤
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: processor: Fix previous acpi_processor_errata_piix4() fix\n\nAfter commi f132e089fe89 (\"ACPI: processor: Fix NULL-pointer dereference\nin acpi_processor_errata_piix4()\"), device pointers may be dereferenced\nafter dropping references to the device objects pointed to by them,\nwhich may cause a use-after-free to occur.\n\nMoreover, debug messages about enabling the errata may be printed\nif the errata flags corresponding to them are unset.\n\nAddress all of these issues by moving message printing to the points\nin the code where the errata flags are set."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-04-18T08:58:56.805Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/bf504b229cb8d534eccbaeaa23eba34c05131e25"
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      "title": "ACPI: processor: Fix previous acpi_processor_errata_piix4() fix",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23443",
    "datePublished": "2026-04-03T15:15:27.698Z",
    "dateReserved": "2026-01-13T15:37:46.018Z",
    "dateUpdated": "2026-04-18T08:58:56.805Z",
    "state": "PUBLISHED"
  },
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}


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