Description
In the Linux kernel, the following vulnerability has been resolved:
usb: storage: realtek_cr: fix use-after-free on disconnect
realtek_cr_destructor() calls timer_delete() before the chip containing the timer is freed. The timer callback may still be running and can rearm itself, resulting in a use-after-free.
Use timer_shutdown_sync() to wait for the callback and prevent further rearming. Do this unconditionally because ss_en may be changed after the timer is armed.
Move timer_setup() into init_realtek_cr() so the timer is initialized before any failure path can invoke the destructor.
Found by static analysis.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= e931830bb877e2aad9a1be83506f9bdb26c91e4e, < f98c2f119fcd81cfede114d2fd3463a17aed8209; >= e931830bb877e2aad9a1be83506f9bdb26c91e4e, < 0935e57ede003bbe35de9c5d6a49260999ca0314; >= e931830bb877e2aad9a1be83506f9bdb26c91e4e, < c1e7e35100efffba7c9e1dfa76519d6cd323ba3d; >= e931830bb877e2aad9a1be83506f9bdb26c91e4e, < 524d4257f741cd95eb85e2817c9c890928fcfef7; >= e931830bb877e2aad9a1be83506f9bdb26c91e4e, < 7c4e2f964c65dea4ea22386799d5fb10ef1e3e54; >= e931830bb877e2aad9a1be83506f9bdb26c91e4e, < cae9dbba6adae21a04a3bd045e07b489847ff2c6; >= e931830bb877e2aad9a1be83506f9bdb26c91e4e, < 4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc |
| Linux | Linux | 3.1 |
References
- https://git.kernel.org/stable/c/0935e57ede003bbe35de9c5d6a49260999ca0314
- https://git.kernel.org/stable/c/4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc
- https://git.kernel.org/stable/c/524d4257f741cd95eb85e2817c9c890928fcfef7
- https://git.kernel.org/stable/c/7c4e2f964c65dea4ea22386799d5fb10ef1e3e54
- https://git.kernel.org/stable/c/c1e7e35100efffba7c9e1dfa76519d6cd323ba3d
- https://git.kernel.org/stable/c/cae9dbba6adae21a04a3bd045e07b489847ff2c6
- https://git.kernel.org/stable/c/f98c2f119fcd81cfede114d2fd3463a17aed8209
Timeline
- Published
- Sep 16, 2026
- Last modified
- Oct 30, 2026
- NVD status
- Received