IT

Tracker / CVE-2023-52672

CVE-2023-52672

Medium 5.5

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 <[email protected]>: rewrite to account for watch queues]

Affected products and versions

debian debian_linux
linux linux_kernel · 5.11 → 5.15.149
linux linux_kernel · 5.16 → 6.1.76
linux linux_kernel · 5.8 → 5.10.210
linux linux_kernel · 6.2 → 6.6.15
linux linux_kernel · 6.7 → 6.7.3

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References