High severity7.8NVD Advisory· Published May 1, 2023· Updated Jun 17, 2026
CVE-2023-2236
CVE-2023-2236
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2Patches
Vulnerability mechanics
References
3- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdExploitMailing ListPatch
- kernel.dance/9d94c04c0db024922e886c9fd429659f22f48ea4nvdExploitPatch
- security.netapp.com/advisory/ntap-20230601-0010/nvdVendor Advisory
News mentions
0No linked articles in our index yet.