CVE-2023-54026 (GCVE-0-2023-54026)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:55 – Updated: 2025-12-24 10:55
VLAI?
Title
opp: Fix use-after-free in lazy_opp_tables after probe deferral
Summary
In the Linux kernel, the following vulnerability has been resolved: opp: Fix use-after-free in lazy_opp_tables after probe deferral When dev_pm_opp_of_find_icc_paths() in _allocate_opp_table() returns -EPROBE_DEFER, the opp_table is freed again, to wait until all the interconnect paths are available. However, if the OPP table is using required-opps then it may already have been added to the global lazy_opp_tables list. The error path does not remove the opp_table from the list again. This can cause crashes later when the provider of the required-opps is added, since we will iterate over OPP tables that have already been freed. E.g.: Unable to handle kernel NULL pointer dereference when read CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 6.4.0-rc3 PC is at _of_add_opp_table_v2 (include/linux/of.h:949 drivers/opp/of.c:98 drivers/opp/of.c:344 drivers/opp/of.c:404 drivers/opp/of.c:1032) -> lazy_link_required_opp_table() Fix this by calling _of_clear_opp_table() to remove the opp_table from the list and clear other allocated resources. While at it, also add the missing mutex_destroy() calls in the error path.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7eba0c7641b0009818e469dbfcdd87a0155ab9d4 , < 39a0e723d3502f6dc4c603f57ebe8dc7bcc4a4bc (git)
Affected: 7eba0c7641b0009818e469dbfcdd87a0155ab9d4 , < 76ab057de777723ec924654502d1a260ba7d7d54 (git)
Affected: 7eba0c7641b0009818e469dbfcdd87a0155ab9d4 , < c05e76d6b249e5254c31994eedd06dd3cc90dee0 (git)
Affected: 7eba0c7641b0009818e469dbfcdd87a0155ab9d4 , < b2a2ab039bd58f51355e33d7d3fc64605d7f870d (git)
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    Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.40 , ≤ 6.1.* (semver)
Unaffected: 6.4.5 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nopp: Fix use-after-free in lazy_opp_tables after probe deferral\n\nWhen dev_pm_opp_of_find_icc_paths() in _allocate_opp_table() returns\n-EPROBE_DEFER, the opp_table is freed again, to wait until all the\ninterconnect paths are available.\n\nHowever, if the OPP table is using required-opps then it may already\nhave been added to the global lazy_opp_tables list. The error path\ndoes not remove the opp_table from the list again.\n\nThis can cause crashes later when the provider of the required-opps\nis added, since we will iterate over OPP tables that have already been\nfreed. E.g.:\n\n  Unable to handle kernel NULL pointer dereference when read\n  CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 6.4.0-rc3\n  PC is at _of_add_opp_table_v2 (include/linux/of.h:949\n  drivers/opp/of.c:98 drivers/opp/of.c:344 drivers/opp/of.c:404\n  drivers/opp/of.c:1032) -\u003e lazy_link_required_opp_table()\n\nFix this by calling _of_clear_opp_table() to remove the opp_table from\nthe list and clear other allocated resources. While at it, also add the\nmissing mutex_destroy() calls in the error path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T10:55:55.182Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/39a0e723d3502f6dc4c603f57ebe8dc7bcc4a4bc"
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          "url": "https://git.kernel.org/stable/c/76ab057de777723ec924654502d1a260ba7d7d54"
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        {
          "url": "https://git.kernel.org/stable/c/b2a2ab039bd58f51355e33d7d3fc64605d7f870d"
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      "title": "opp: Fix use-after-free in lazy_opp_tables after probe deferral",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54026",
    "datePublished": "2025-12-24T10:55:55.182Z",
    "dateReserved": "2025-12-24T10:53:46.179Z",
    "dateUpdated": "2025-12-24T10:55:55.182Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54026\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T11:15:55.610\",\"lastModified\":\"2025-12-29T15:58:56.260\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nopp: Fix use-after-free in lazy_opp_tables after probe deferral\\n\\nWhen dev_pm_opp_of_find_icc_paths() in _allocate_opp_table() returns\\n-EPROBE_DEFER, the opp_table is freed again, to wait until all the\\ninterconnect paths are available.\\n\\nHowever, if the OPP table is using required-opps then it may already\\nhave been added to the global lazy_opp_tables list. The error path\\ndoes not remove the opp_table from the list again.\\n\\nThis can cause crashes later when the provider of the required-opps\\nis added, since we will iterate over OPP tables that have already been\\nfreed. E.g.:\\n\\n  Unable to handle kernel NULL pointer dereference when read\\n  CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 6.4.0-rc3\\n  PC is at _of_add_opp_table_v2 (include/linux/of.h:949\\n  drivers/opp/of.c:98 drivers/opp/of.c:344 drivers/opp/of.c:404\\n  drivers/opp/of.c:1032) -\u003e lazy_link_required_opp_table()\\n\\nFix this by calling _of_clear_opp_table() to remove the opp_table from\\nthe list and clear other allocated resources. While at it, also add the\\nmissing mutex_destroy() calls in the error path.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/39a0e723d3502f6dc4c603f57ebe8dc7bcc4a4bc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/76ab057de777723ec924654502d1a260ba7d7d54\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b2a2ab039bd58f51355e33d7d3fc64605d7f870d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c05e76d6b249e5254c31994eedd06dd3cc90dee0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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