CVE-2022-47946

An issue was discovered in the Linux kernel 5.10.x before 5.10.155. A use-after-free in io_sqpoll_wait_sq in fs/io_uring.c allows an attacker to crash the kernel, resulting in denial of service. finish_wait can be skipped. An attack can occur in some situations by forking a process and then quickly terminating it. NOTE: later kernel versions, such as the 5.15 longterm series, substantially changed the implementation of io_sqpoll_wait_sq.

Score

CVSS 3.1 5.5 Medium

Status

Modified - cve@mitre.org

Published

2022-12-23

Last modified

2026-10-14

Weaknesses

CWE-416

Affected products

• Linux Kernel (Linux)
• Simatic S7-1500 Tm Mfp - Gnulinux Subsystem (Siemens)

References

• https://www.openwall.com/lists/oss-security/2022/12/22/2
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.161&id=0f544353fec8e717d37724d95b92538…
• http://www.openwall.com/lists/oss-security/2022/12/27/1
• https://cert-portal.siemens.com/productcert/html/ssa-794697.html