CVE-2022-1043

Description

A flaw was found in the Linux kernel’s io_uring implementation. This flaw allows an attacker with a local account to corrupt system memory, crash the system or escalate privileges.

Affected products

Vendor	Product	Affected	Fixed
—	Kernel	Fixed in kernel v5.14 rc7	—

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗

Release	Package	Fixed in	Advisory
Debian 14	linux	5.14.6-1	—
Debian 13	linux	5.14.6-1	—
Debian 12	linux	5.14.6-1	—

Ubuntu

Security tracker ↗

Release	Package	Fixed in	Advisory
Ubuntu 20.04 LTS	linux-riscv +17	No fix yet	—
Ubuntu 18.04 LTS	linux-gcp +12	No fix yet	—
Ubuntu 16.04 LTS	linux-hwe-edge	No fix yet	—

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Metasploit 1 module

io_uring Same Type Object Reuse Priv Esc
exploit/linux/local/cve_2022_1043_io_uring_priv_esc

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 1

WID-SEC-2022-1323 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 27, 2023

A flaw was found in the Linux kernel’s io_uring implementation. This flaw allows an attacker with a local account to corrupt system memory,…