CVE-2023-54299
Description
In the Linux kernel, the following vulnerability has been resolved: usb: typec: bus: verify partner exists in typec_altmode_attention Some usb hubs will negotiate DisplayPort Alt mode with the device but will then negotiate a data role swap after entering the alt mode. The data role swap causes the device to unregister all alt modes, however the usb hub will still send Attention messages even after failing to reregister the Alt Mode. type_altmode_attention currently does not verify whether or not a device's altmode partner exists, which results in a NULL pointer error when dereferencing the typec_altmode and typec_altmode_ops belonging to the altmode partner. Verify the presence of a device's altmode partner before sending the Attention message to the Alt Mode driver.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2023-54299
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2023-54299.html
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2024:9315
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.1.55-1 |
| debian | bullseye | fixed | 5.10.197-1 |
| debian | forky | fixed | 6.5.3-1 |
| debian | sid | fixed | 6.5.3-1 |
| debian | trixie | fixed | 6.5.3-1 |
References
Verify integrity in audit chain (admin only). AS-IS.