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CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-47357

atm: iphase: fix possible use-after-free in ia_module_exit()

Description

In the Linux kernel, the following vulnerability has been resolved: atm: iphase: fix possible use-after-free in ia_module_exit() This module's remove path calls del_timer(). However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running after the driver's remove function has finished, which would result in a use-after-free. Fix by calling del_timer_sync(), which makes sure the timer handler has finished, and unable to re-schedule itself.

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

  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9e161687855175334ca93c6c3ccb221731194479affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a832ee2f2145f57443b2d565f8cb5490e8339f42affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < bcdd2be48edd8c6867fb44112cb8d18086beae29affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 89ce0b0747f319eb70f85bc820dcc43cebbd5417affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c9172498d4d62c9b64e5fb37c1ee0343e65fe51baffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < e759ff76ebbbfcdcf83b6634c54dc47828573d8baffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b58d246a058ae88484758cd4ab27b3180fd5ecf8affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < d1fb12412874c94ad037e11d0ecdd1140a439297affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 1c72e6ab66b9598cac741ed397438a52065a8f1faffected

Linux Linux

Default version status: affected

  • 2.6.12affected
  • 0 to < 2.6.12unaffected
  • 4.4.276 to ≤ 4.4.*unaffected
  • 4.9.276 to ≤ 4.9.*unaffected
  • 4.14.240 to ≤ 4.14.*unaffected
  • 4.19.198 to ≤ 4.19.*unaffected
  • 5.4.133 to ≤ 5.4.*unaffected
  • 5.10.51 to ≤ 5.10.*unaffected
  • 5.12.18 to ≤ 5.12.*unaffected
  • 5.13.3 to ≤ 5.13.*unaffected
  • 5.14 to ≤ *unaffected

References