CVE-2026-97600

Summary

In the Linux kernel, the following vulnerability has been resolved:

ieee802154: cc2520: fix FIFOP work use-after-free

The FIFOP interrupt handler queues cc2520_fifop_irqwork. On removal, cc2520_remove() only flushes the work. The devm-managed FIFOP IRQ remains active until after ->remove() returns and can queue the work again after that flush, allowing it to run after the private data is released.

Disable the work with disable_work_sync() instead of flushing it, so the handler can no longer queue it once removal begins. Destroy the buffer mutex last, since the worker and the stop callback invoked through ieee802154_unregister_hw() both take it.

Found by an in-house static analysis tool.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0da6bc8cc3417a5e452efb886ff2c61e72b743d6 < 56a9919d8494fb118eebf167bef0622528fbf2e7affected
LinuxLinux0da6bc8cc3417a5e452efb886ff2c61e72b743d6 < c68fd52c73b676aee67020011e98fea125a978f4affected
LinuxLinux0da6bc8cc3417a5e452efb886ff2c61e72b743d6 < 890a80d516a1447db5c21bf92841a82914ea897daffected
LinuxLinux0da6bc8cc3417a5e452efb886ff2c61e72b743d6 < ff5891b266a7fc6a062710836be84f1cc19338b5affected
LinuxLinux3.17affected
LinuxLinux0 < 3.17unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc3 <= *unaffected

Weaknesses

References