CVE-2026-23169 (GCVE-0-2026-23169)
Vulnerability from cvelistv5
Published
2026-02-14 16:01
Modified
2026-04-03 13:32
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race in mptcp_pm_nl_flush_addrs_doit() syzbot and Eulgyu Kim reported crashes in mptcp_pm_nl_get_local_id() and/or mptcp_pm_nl_is_backup() Root cause is list_splice_init() in mptcp_pm_nl_flush_addrs_doit() which is not RCU ready. list_splice_init_rcu() can not be called here while holding pernet->lock spinlock. Many thanks to Eulgyu Kim for providing a repro and testing our patches.
References
Impacted products
Vendor Product Version
Linux Linux Version: 141694df6573b49aa4143c92556544b4b0bbda72
Version: 141694df6573b49aa4143c92556544b4b0bbda72
Version: 141694df6573b49aa4143c92556544b4b0bbda72
Version: 141694df6573b49aa4143c92556544b4b0bbda72
Version: 141694df6573b49aa4143c92556544b4b0bbda72
Version: 141694df6573b49aa4143c92556544b4b0bbda72
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix race in mptcp_pm_nl_flush_addrs_doit()\n\nsyzbot and Eulgyu Kim reported crashes in mptcp_pm_nl_get_local_id()\nand/or mptcp_pm_nl_is_backup()\n\nRoot cause is list_splice_init() in mptcp_pm_nl_flush_addrs_doit()\nwhich is not RCU ready.\n\nlist_splice_init_rcu() can not be called here while holding pernet-\u003elock\nspinlock.\n\nMany thanks to Eulgyu Kim for providing a repro and testing our patches."
        }
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            "version": "3.1"
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        "dateUpdated": "2026-04-03T13:32:08.297Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/338d40bab283da2639780ee3e458fb61f1567d8c"
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          "url": "https://git.kernel.org/stable/c/7896dbe990d56d5bb8097863b2645355633665eb"
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        {
          "url": "https://git.kernel.org/stable/c/e2a9eeb69f7d4ca4cf4c70463af77664fdb6ab1d"
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    "datePublished": "2026-02-14T16:01:32.139Z",
    "dateReserved": "2026-01-13T15:37:45.982Z",
    "dateUpdated": "2026-04-03T13:32:08.297Z",
    "state": "PUBLISHED"
  },
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}


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