fkie_cve-2022-49220
Vulnerability from fkie_nvd
Published
2025-02-26 07:00
Modified
2025-02-26 07:00
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: dax: make sure inodes are flushed before destroy cache A bug can be triggered by following command $ modprobe nd_pmem && modprobe -r nd_pmem [ 10.060014] BUG dax_cache (Not tainted): Objects remaining in dax_cache on __kmem_cache_shutdown() [ 10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node) [ 10.062433] Call Trace: [ 10.062673] dump_stack_lvl+0x34/0x44 [ 10.062865] slab_err+0x90/0xd0 [ 10.063619] __kmem_cache_shutdown+0x13b/0x2f0 [ 10.063848] kmem_cache_destroy+0x4a/0x110 [ 10.064058] __x64_sys_delete_module+0x265/0x300 This is caused by dax_fs_exit() not flushing inodes before destroy cache. To fix this issue, call rcu_barrier() before destroy cache.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/770d42fff12d8595adda9025a0b92091f543e775
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a7e8de822e0b1979f08767c751f6c8a9c1d4ad86
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b786abe7c67c6ef71410c8e23292b3091d616ad1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e2951eaa9398415ac054b7bd80b8163b6838ead4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ec376f5c11c88c0215d173599db8449cd4196759
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f2a1e0eb70c2d954176c07d75d28742bde30e9f3
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndax: make sure inodes are flushed before destroy cache\n\nA bug can be triggered by following command\n\n$ modprobe nd_pmem \u0026\u0026 modprobe -r nd_pmem\n\n[   10.060014] BUG dax_cache (Not tainted): Objects remaining in dax_cache on __kmem_cache_shutdown()\n[   10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node)\n[   10.062433] Call Trace:\n[   10.062673]  dump_stack_lvl+0x34/0x44\n[   10.062865]  slab_err+0x90/0xd0\n[   10.063619]  __kmem_cache_shutdown+0x13b/0x2f0\n[   10.063848]  kmem_cache_destroy+0x4a/0x110\n[   10.064058]  __x64_sys_delete_module+0x265/0x300\n\nThis is caused by dax_fs_exit() not flushing inodes before destroy cache.\nTo fix this issue, call rcu_barrier() before destroy cache."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dax: aseg\u00farese de que los inodos se vac\u00eden antes de destruir la cach\u00e9. Se puede activar un error con el siguiente comando $ modprobe nd_pmem \u0026amp;\u0026amp; modprobe -r nd_pmem [ 10.060014] ERROR dax_cache (no contaminado): objetos restantes en dax_cache en __kmem_cache_shutdown() [ 10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node) [ 10.062433] Seguimiento de llamadas: [ 10.062673] dump_stack_lvl+0x34/0x44 [ 10.062865] slab_err+0x90/0xd0 [ 10.063619] __kmem_cache_shutdown+0x13b/0x2f0 [ 10.063848] kmem_cache_destroy+0x4a/0x110 [ 10.064058] __x64_sys_delete_module+0x265/0x300 Esto se debe a que dax_fs_exit() no vac\u00eda los inodos antes de destruir la cach\u00e9. Para solucionar este problema, llame a rcu_barrier() antes de destruir la cach\u00e9."
    }
  ],
  "id": "CVE-2022-49220",
  "lastModified": "2025-02-26T07:00:59.070",
  "metrics": {},
  "published": "2025-02-26T07:00:59.070",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/770d42fff12d8595adda9025a0b92091f543e775"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a7e8de822e0b1979f08767c751f6c8a9c1d4ad86"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b786abe7c67c6ef71410c8e23292b3091d616ad1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e2951eaa9398415ac054b7bd80b8163b6838ead4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ec376f5c11c88c0215d173599db8449cd4196759"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f2a1e0eb70c2d954176c07d75d28742bde30e9f3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.