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's 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 estadísticas en comprobación de actualidad syzbot detecta que cachestat() está vaciando estadísticas, que pueden dormir, en su sección 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 estadísticas antes de la sección de lectura de RCU de cachestat y omita el vaciado de estadísticas durante la verificación 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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