CVE-2023-52672

CVE-2023-52672 affects the Linux kernel pipe handling code. A regression in pipe resizing caused writers to deadlock when a pipe was full during a resize because wakeups on pipe->wr_wait could occur before pipe->max_usage was updated. The fix changes the sequence: set max_usage (and nr_acco...

kernel: watch queue race condition can lead to privilege escalation

A race condition was found in the Linux kernel's watch queue due to a missing lock in the piperesizering. The race condition occurs when a thread uses ioctlIOCWATCHQUEUESETSIZE to resize the pipe buffer and free the old pipe buffer, while another thread uses keyctl to trigger a notification in th...