CVE-2026-90029usb: storage: realtek_cr: fix use-after-free on disconnect
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from e931830bb877e2aad9a1be83506f9bdb26c91e4e before 524d4257f741cd95eb85e2817c9c890928fcfef7; from e931830bb877e2aad9a1be83506f9bdb26c91e4e before 7c4e2f964c65dea4ea22386799d5fb10ef1e3e54; from e931830bb877e2aad9a1be83506f9bdb26c91e4e before cae9dbba6adae21a04a3bd045e07b489847ff2c6; from e931830bb877e2aad9a1be83506f9bdb26c91e4e before 4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc | CNA record |
References
- https://git.kernel.org/stable/c/524d4257f741cd95eb85e2817c9c890928fcfef7
- https://git.kernel.org/stable/c/7c4e2f964c65dea4ea22386799d5fb10ef1e3e54
- https://git.kernel.org/stable/c/cae9dbba6adae21a04a3bd045e07b489847ff2c6
- https://git.kernel.org/stable/c/4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.