Vulnerability Description
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
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.18, < 5.19.11 |
Related Weaknesses (CWE)
References
- https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f167PatchThird Party Advisory
- https://kernel.dance/#fc7222c3a9f56271fba02aabbfbae999042f1679PatchThird Party Advisory
- https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f167PatchThird Party Advisory
- https://kernel.dance/#fc7222c3a9f56271fba02aabbfbae999042f1679PatchThird Party Advisory
FAQ
What is CVE-2022-3910?
CVE-2022-3910 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2022-3910?
CVE-2022-3910 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-3910?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.