CVE-2022-3910
Use after free in IO_uring in the Linux Kernel
HIGH 7.8EPSS 1.1%
Use After Free vulnerability in Linux Kernel allows Privilege Escalation. An improper Update of Reference Count in io_uring leads to Use-After-Free and Local Privilege Escalation.When io_msg_ring was invoked with a fixed file, it called io_fput_file() which improperly decreased its reference count (leading to Use-After-Free and Local Privilege Escalation). Fixed files are permanently registered to the ring, and should not be put separately.We recommend upgrading past commit https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679 https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679
- 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
- 1.05% chance of exploitation in the next 30 days, 64th percentile
- Published
- 2022-11-22
- Updated
- 2025-04-21
Proof-of-concept exploits (2)
- TLD1027/CVE-2022-39101★ · 2025-03-03
- veritas501/CVE-2022-391012★ · 2023-03-14
Security advisories
- torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679
- https://kernel.dance/#fc7222c3a9f56271fba02aabbfbae999042f1679