CVE-2023-2236
Use-after-free in Linux kernel's Performance Events subsystem
HIGH 7.8EPSS 0.4%
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
- Linux · Linux Kernel
- CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.43% chance of exploitation in the next 30 days, 36th percentile
- Published
- 2023-05-01
- Updated
- 2025-03-05
Proof-of-concept exploits (1)
Security advisories
- https://security.netapp.com/advisory/ntap-20230601-0010
- https://kernel.dance/9d94c04c0db024922e886c9fd429659f22f48ea4