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CVE PROGRAM SOURCE RECORD7.0 High

CVE-2023-52672

pipe: wakeup wr_wait after setting max_usage

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: pipe: wakeup wr_wait after setting max_usage Commit c73be61cede5 ("pipe: Add general notification queue support") a regression was introduced that would lock up resized pipes under certain conditions. See the reproducer in [1]. The commit resizing the pipe ring size was moved to a different function, doing that moved the wakeup for pipe->wr_wait before actually raising pipe->max_usage. If a pipe was full before the resize occured it would result in the wakeup never actually triggering pipe_write. Set @max_usage and @nr_accounted before waking writers if this isn't a watch queue. [Christian Brauner <brauner@kernel.org>: rewrite to account for watch queues]

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

  • c73be61cede5882f9605a852414db559c0ebedfd to < 162ae0e78bdabf84ef10c1293c4ed7865cb7d3c8affected
  • c73be61cede5882f9605a852414db559c0ebedfd to < 3efbd114b91525bb095b8ae046382197d92126b9affected
  • c73be61cede5882f9605a852414db559c0ebedfd to < b87a1229d8668fbc78ebd9ca0fc797a76001c60faffected
  • c73be61cede5882f9605a852414db559c0ebedfd to < 68e51bdb1194f11d3452525b99c98aff6f837b24affected
  • c73be61cede5882f9605a852414db559c0ebedfd to < 6fb70694f8d1ac34e45246b0ac988f025e1e5b55affected
  • c73be61cede5882f9605a852414db559c0ebedfd to < e95aada4cb93d42e25c30a0ef9eb2923d9711d4aaffected

Linux Linux

Default version status: affected

  • 5.8affected
  • 0 to < 5.8unaffected
  • 5.10.210 to ≤ 5.10.*unaffected
  • 5.15.149 to ≤ 5.15.*unaffected
  • 6.1.76 to ≤ 6.1.*unaffected
  • 6.6.15 to ≤ 6.6.*unaffected
  • 6.7.3 to ≤ 6.7.*unaffected
  • 6.8 to ≤ *unaffected

References