GHSA-6PC7-4X73-WWC6

Vulnerability from github – Published: 2024-02-26 18:30 – Updated: 2024-06-27 12:30
VLAI?
Details

In the Linux kernel, the following vulnerability has been resolved:

binder: signal epoll threads of self-work

In (e)poll mode, threads often depend on I/O events to determine when data is ready for consumption. Within binder, a thread may initiate a command via BINDER_WRITE_READ without a read buffer and then make use of epoll_wait() or similar to consume any responses afterwards.

It is then crucial that epoll threads are signaled via wakeup when they queue their own work. Otherwise, they risk waiting indefinitely for an event leaving their work unhandled. What is worse, subsequent commands won't trigger a wakeup either as the thread has pending work.

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-26606"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-26T16:28:00Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: signal epoll threads of self-work\n\nIn (e)poll mode, threads often depend on I/O events to determine when\ndata is ready for consumption. Within binder, a thread may initiate a\ncommand via BINDER_WRITE_READ without a read buffer and then make use\nof epoll_wait() or similar to consume any responses afterwards.\n\nIt is then crucial that epoll threads are signaled via wakeup when they\nqueue their own work. Otherwise, they risk waiting indefinitely for an\nevent leaving their work unhandled. What is worse, subsequent commands\nwon\u0027t trigger a wakeup either as the thread has pending work.",
  "id": "GHSA-6pc7-4x73-wwc6",
  "modified": "2024-06-27T12:30:43Z",
  "published": "2024-02-26T18:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26606"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42beab162dcee1e691ee4934292d51581c29df61"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82722b453dc2f967b172603e389ee7dc1b3137cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90e09c016d72b91e76de25f71c7b93d94cc3c769"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93b372c39c40cbf179e56621e6bc48240943af69"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/97830f3c3088638ff90b20dfba2eb4d487bf14d7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a423042052ec2bdbf1e552e621e6a768922363cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a7ae586f6f6024f490b8546c8c84670f96bb9b68"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd64bb8329ce0ea27bc557e4160c2688835402ac"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.