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CVE-2023-2236 A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege…

Description

A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Both io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability. We recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.

Affected products and versions

Product Affected versions Fixed in
Linux Kernel 5.19 5.19 → < 6.1 6.1

References

Timeline

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