Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.10, < 5.10.155 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2022/12/27/1Mailing ListThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10Mailing ListPatchThird Party Advisory
- https://www.openwall.com/lists/oss-security/2022/12/22/2ExploitMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2022/12/27/1Mailing ListThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10Mailing ListPatchThird Party Advisory
- https://www.openwall.com/lists/oss-security/2022/12/22/2ExploitMailing ListThird Party Advisory
FAQ
What is CVE-2022-47946?
CVE-2022-47946 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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. finis...
How severe is CVE-2022-47946?
CVE-2022-47946 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-47946?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.