fkie_cve-2024-41034
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: nilfs2: fix kernel bug on rename operation of broken directory Syzbot reported that in rename directory operation on broken directory on nilfs2, __block_write_begin_int() called to prepare block write may fail BUG_ON check for access exceeding the folio/page size. This is because nilfs_dotdot(), which gets parent directory reference entry ("..") of the directory to be moved or renamed, does not check consistency enough, and may return location exceeding folio/page size for broken directories. Fix this issue by checking required directory entries ("." and "..") in the first chunk of the directory in nilfs_dotdot().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a8879c0771a68d70ee2e5e66eea34207e8c6231
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24c1c8566a9b6be51f5347be2ea76e25fc82b11e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/298cd810d7fb687c90a14d8f9fd1b8719a7cb8a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60f61514374e4a0c3b65b08c6024dd7e26150bfd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7000b438dda9d0f41a956fc9bffed92d2eb6be0d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9a466a69b85059b341239766a10efdd3ee68a4b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9e1ddc09ca55746079cc479aa3eb6411f0d99d4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff9767ba2cb949701e45e6e4287f8af82986b703
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1a8879c0771a68d70ee2e5e66eea34207e8c6231
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/24c1c8566a9b6be51f5347be2ea76e25fc82b11e
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/298cd810d7fb687c90a14d8f9fd1b8719a7cb8a5
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/60f61514374e4a0c3b65b08c6024dd7e26150bfd
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7000b438dda9d0f41a956fc9bffed92d2eb6be0d
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a9a466a69b85059b341239766a10efdd3ee68a4b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a9e1ddc09ca55746079cc479aa3eb6411f0d99d4
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ff9767ba2cb949701e45e6e4287f8af82986b703
Impacted products
Vendor Product Version


To clipboard 

{
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix kernel bug on rename operation of broken directory\n\nSyzbot reported that in rename directory operation on broken directory on\nnilfs2, __block_write_begin_int() called to prepare block write may fail\nBUG_ON check for access exceeding the folio/page size.\n\nThis is because nilfs_dotdot(), which gets parent directory reference\nentry (\"..\") of the directory to be moved or renamed, does not check\nconsistency enough, and may return location exceeding folio/page size for\nbroken directories.\n\nFix this issue by checking required directory entries (\".\" and \"..\") in\nthe first chunk of the directory in nilfs_dotdot().",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se resolvió la siguiente vulnerabilidad: nilfs2: corrige el error del kernel en la operación de cambio de nombre de un directorio roto Syzbot informó que en la operación de cambio de nombre de directorio en un directorio roto en nilfs2, __block_write_begin_int() llamado para preparar la escritura en bloque puede fallar en la verificación BUG_ON de acceso exceder el tamaño del folio/página. Esto se debe a que nilfs_dotdot(), que obtiene la entrada de referencia del directorio principal (\"..\") del directorio que se va a mover o cambiar de nombre, no verifica la coherencia lo suficiente y puede devolver una ubicación que exceda el tamaño de folio/página para directorios rotos. Solucione este problema verificando las entradas de directorio requeridas (\".\" y \"..\") en el primer fragmento del directorio en nilfs_dotdot().",
      },
   ],
   id: "CVE-2024-41034",
   lastModified: "2024-11-21T09:32:06.463",
   metrics: {},
   published: "2024-07-29T15:15:11.990",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/1a8879c0771a68d70ee2e5e66eea34207e8c6231",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/24c1c8566a9b6be51f5347be2ea76e25fc82b11e",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/298cd810d7fb687c90a14d8f9fd1b8719a7cb8a5",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/60f61514374e4a0c3b65b08c6024dd7e26150bfd",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/7000b438dda9d0f41a956fc9bffed92d2eb6be0d",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/a9a466a69b85059b341239766a10efdd3ee68a4b",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/a9e1ddc09ca55746079cc479aa3eb6411f0d99d4",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/ff9767ba2cb949701e45e6e4287f8af82986b703",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/1a8879c0771a68d70ee2e5e66eea34207e8c6231",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/24c1c8566a9b6be51f5347be2ea76e25fc82b11e",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/298cd810d7fb687c90a14d8f9fd1b8719a7cb8a5",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/60f61514374e4a0c3b65b08c6024dd7e26150bfd",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/7000b438dda9d0f41a956fc9bffed92d2eb6be0d",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/a9a466a69b85059b341239766a10efdd3ee68a4b",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/a9e1ddc09ca55746079cc479aa3eb6411f0d99d4",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/ff9767ba2cb949701e45e6e4287f8af82986b703",
      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Awaiting Analysis",
}


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