CVE-2023-2236
High
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.
SeverityHigh
CVSS7.8
Exploit probability37. percentile0.4%
Product
Linux Kernel
PublishedMay 1, 2023
First seenMay 1, 2023
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel6.0.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.19 ≤ v < 6.0.11 | 6.0.11 |
| netapp hci_baseboard_management_controller | h300s, h410c, h410s, h500s, h700s | — |
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