AZL-102156
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-102156.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-102156
- Upstream
- Published
- 2026-09-17T17:17:32Z
- Modified
- 2026-09-18T14:17:49Z
- Summary
- CVE-2026-90336 affecting package kernel 6.6.150.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
serial: core: clear freed pointers on uart_register_driver() failure
uart_register_driver() leaves drv->state pointing to freed memory when tty_alloc_driver() fails. If tty_register_driver() fails, drv->tty_driver also retains a pointer after its reference is dropped.
Drivers that use drv->state as an "already registered" flag can then skip registration on the next probe and pass the freed state to uart_add_one_port().
This issue was found with failslab on QEMU's raspi1ap board by failing registration and binding the PL011 port again.
Clear both pointers on their failure paths, as uart_unregister_driver() already does.
- References