CVE-2023-1872
High
Description
A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escalation. The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedApr 12, 2023
First seenApr 12, 2023
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel5.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.7 ≤ v < 5.17 | 5.17 |
| debian debian_linux | 10.0 | — |
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