fkie_cve-2022-49747
Vulnerability from fkie_nvd
Published
2025-03-27 17:15
Modified
2025-03-28 18:11
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: erofs/zmap.c: Fix incorrect offset calculation Effective offset to add to length was being incorrectly calculated, which resulted in iomap->length being set to 0, triggering a WARN_ON in iomap_iter_done(). Fix that, and describe it in comments. This was reported as a crash by syzbot under an issue about a warning encountered in iomap_iter_done(), but unrelated to erofs. C reproducer: https://syzkaller.appspot.com/text?tag=ReproC&x=1037a6b2880000 Kernel config: https://syzkaller.appspot.com/text?tag=KernelConfig&x=e2021a61197ebe02 Dashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs/zmap.c: Fix incorrect offset calculation\n\nEffective offset to add to length was being incorrectly calculated,\nwhich resulted in iomap-\u003elength being set to 0, triggering a WARN_ON\nin iomap_iter_done().\n\nFix that, and describe it in comments.\n\nThis was reported as a crash by syzbot under an issue about a warning\nencountered in iomap_iter_done(), but unrelated to erofs.\n\nC reproducer: https://syzkaller.appspot.com/text?tag=ReproC\u0026x=1037a6b2880000\nKernel config: https://syzkaller.appspot.com/text?tag=KernelConfig\u0026x=e2021a61197ebe02\nDashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: erofs/zmap.c: Se corrigi\u00f3 el c\u00e1lculo incorrecto del desplazamiento. El desplazamiento efectivo para a\u00f1adir a length se calculaba incorrectamente, lo que provocaba que iomap-\u0026gt;length se estableciera en 0, lo que activaba un WARN_ON en iomap_iter_done(). Se corrigi\u00f3 y se describi\u00f3 en los comentarios. syzbot report\u00f3 esto como un fallo en un problema relacionado con una advertencia encontrada en iomap_iter_done(), pero no relacionada con erofs. Reproductor C: https://syzkaller.appspot.com/text?tag=ReproC\u0026amp;x=1037a6b2880000 Configuraci\u00f3n del kernel: https://syzkaller.appspot.com/text?tag=KernelConfig\u0026amp;x=e2021a61197ebe02 Enlace del panel: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6"
    }
  ],
  "id": "CVE-2022-49747",
  "lastModified": "2025-03-28T18:11:49.747",
  "metrics": {},
  "published": "2025-03-27T17:15:39.477",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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