NULL pointer dereference in Linux
CVE-2022-49944
In the Linux kernel, the following vulnerability has been resolved: Revert "usb: typec: ucsi: add a common function ucsi_unregister_connectors()" The recent commit 87d0e2f41b8c ("usb: typec: ucsi: add a common function ucsi_unregister_connectors()") introduced a regression that caused NULL dereference at reading the power supply sysfs. It's a stale sysfs entry that should have been removed but remains with NULL ops. The commit changed the error handling to skip the entries after a NULL con->wq, and this leaves the power device unreleased. For addressing the regression, the straight revert is applied here. Further code improvements can be done from the scratch again.
EPSS: 0.002 (7.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions 87d0e2f41b8cc2018499be4e8003fa8c09b6f2fb, 5.19, 0
- Linux Linux_kernel — versions 6.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2022-49944?
- CVE-2022-49944 is a high-severity vulnerability in Linux, classified under NULL Pointer Dereference. CVSS score: 7.8/10. Published 2025-06-18.
- How severe is CVE-2022-49944?
- High severity. CVSS v3 base score is 7.8 out of 10.