CVE-2021-47123

2024-03-1521:15:07

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

linux kernel

io_uring

double free

6.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.2%

JSON

In the Linux kernel, the following vulnerability has been resolved:

io_uring: fix ltout double free on completion race

Always remove linked timeout on io_link_timeout_fn() from the master
request link list, otherwise we may get use-after-free when first
io_link_timeout_fn() puts linked timeout in the fail path, and then
will be found and put on master’s free.

References

git.kernel.org/stable/c/1f64f5e903b9d1d157875721e02adadc9d6f0a5d

git.kernel.org/stable/c/447c19f3b5074409c794b350b10306e1da1ef4ba