CVE-2022-47946
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2022-47946
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2022-47946.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 6.2-1 | |
| debian | bookworm | fixed | 5.14.6-1 |
| debian | bullseye | fixed | 5.10.158-1 |
| debian | forky | fixed | 5.14.6-1 |
| debian | sid | fixed | 5.14.6-1 |
| debian | trixie | fixed | 5.14.6-1 |
| sles | affected | |
References
Verify integrity in audit chain (admin only). AS-IS.