ghsa-xcjg-g59x-3948
Vulnerability from github
Published
2024-12-27 15:31
Modified
2024-12-27 15:31
Details

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

ALSA: usx2y: Use snd_card_free_when_closed() at disconnection

The USB disconnect callback is supposed to be short and not too-long waiting. OTOH, the current code uses snd_card_free() at disconnection, but this waits for the close of all used fds, hence it can take long. It eventually blocks the upper layer USB ioctls, which may trigger a soft lockup.

An easy workaround is to replace snd_card_free() with snd_card_free_when_closed(). This variant returns immediately while the release of resources is done asynchronously by the card device release at the last close.

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{
   affected: [],
   aliases: [
      "CVE-2024-56533",
   ],
   database_specific: {
      cwe_ids: [],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-12-27T14:15:32Z",
      severity: null,
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usx2y: Use snd_card_free_when_closed() at disconnection\n\nThe USB disconnect callback is supposed to be short and not too-long\nwaiting.  OTOH, the current code uses snd_card_free() at\ndisconnection, but this waits for the close of all used fds, hence it\ncan take long.  It eventually blocks the upper layer USB ioctls, which\nmay trigger a soft lockup.\n\nAn easy workaround is to replace snd_card_free() with\nsnd_card_free_when_closed().  This variant returns immediately while\nthe release of resources is done asynchronously by the card device\nrelease at the last close.",
   id: "GHSA-xcjg-g59x-3948",
   modified: "2024-12-27T15:31:53Z",
   published: "2024-12-27T15:31:53Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-56533",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/24fe9f7ca83ec9acf765339054951f5cd9ae5c5d",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/7bd8838c0ea886679a32834fdcacab296d072fbe",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/befcca1777525e37c659b4129d8ac7463b07ef67",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/dafb28f02be407e07a6f679e922a626592b481b0",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/e07605d855c4104d981653146a330ea48f6266ed",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/e869642a77a9b3b98b0ab2c8fec7af4385140909",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/ffbfc6c4330fc233698529656798bee44fea96f5",
      },
   ],
   schema_version: "1.4.0",
   severity: [],
}


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