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CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-47360

binder: make sure fd closes complete

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: binder: make sure fd closes complete During BC_FREE_BUFFER processing, the BINDER_TYPE_FDA object cleanup may close 1 or more fds. The close operations are completed using the task work mechanism -- which means the thread needs to return to userspace or the file object may never be dereferenced -- which can lead to hung processes. Force the binder thread back to userspace if an fd is closed during BC_FREE_BUFFER handling.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 80cd795630d6526ba729a089a435bf74a57af927 to < aa2c274c279ff365a06a4cba263f04965895166eaffected
  • 80cd795630d6526ba729a089a435bf74a57af927 to < d5b0473707fa53b03a5db0256ce62b2874bddbc7affected
  • 80cd795630d6526ba729a089a435bf74a57af927 to < b95483d8d94b41fa31a84c1d86710b7907a37621affected
  • 80cd795630d6526ba729a089a435bf74a57af927 to < 5fdb55c1ac9585eb23bb2541d5819224429e103daffected
  • 27564d8d5d12d2ff197055346069c6bdbe08a8c2affected
  • 4.20.1 to < 4.21affected

Linux Linux

Default version status: affected

  • 5.0affected
  • 0 to < 5.0unaffected
  • 5.4.150 to ≤ 5.4.*unaffected
  • 5.10.70 to ≤ 5.10.*unaffected
  • 5.14.9 to ≤ 5.14.*unaffected
  • 5.15 to ≤ *unaffected

References