fkie_cve-2024-41033
Vulnerability from fkie_nvd
Published
2024-07-29 15:15
Modified
2024-11-21 09:32
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: cachestat: do not flush stats in recency check syzbot detects that cachestat() is flushing stats, which can sleep, in its RCU read section (see [1]). This is done in the workingset_test_recent() step (which checks if the folio's eviction is recent). Move the stat flushing step to before the RCU read section of cachestat, and skip stat flushing during the recency check. [1]: https://lore.kernel.org/cgroups/000000000000f71227061bdf97e0@google.com/
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1d1ba14e00d290b1ed616ed78c8c49bf897ce390
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1d1ba14e00d290b1ed616ed78c8c49bf897ce390
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachestat: do not flush stats in recency check\n\nsyzbot detects that cachestat() is flushing stats, which can sleep, in its\nRCU read section (see [1]).  This is done in the workingset_test_recent()\nstep (which checks if the folio\u0027s eviction is recent).\n\nMove the stat flushing step to before the RCU read section of cachestat,\nand skip stat flushing during the recency check.\n\n[1]: https://lore.kernel.org/cgroups/000000000000f71227061bdf97e0@google.com/"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cachestat: no vaciar estad\u00edsticas en comprobaci\u00f3n de actualidad syzbot detecta que cachestat() est\u00e1 vaciando estad\u00edsticas, que pueden dormir, en su secci\u00f3n de lectura de RCU (ver [1]). Esto se hace en el pasoworkingset_test_recent() (que verifica si el desalojo del folio es reciente). Mueva el paso de vaciado de estad\u00edsticas antes de la secci\u00f3n de lectura de RCU de cachestat y omita el vaciado de estad\u00edsticas durante la verificaci\u00f3n reciente. [1]: https://lore.kernel.org/cgroups/000000000000f71227061bdf97e0@google.com/"
    }
  ],
  "id": "CVE-2024-41033",
  "lastModified": "2024-11-21T09:32:06.363",
  "metrics": {},
  "published": "2024-07-29T15:15:11.920",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1d1ba14e00d290b1ed616ed78c8c49bf897ce390"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/1d1ba14e00d290b1ed616ed78c8c49bf897ce390"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/5a4d8944d6b1e1aaaa83ea42c116b520b4ed0394"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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