CVE-2026-93279

Summary

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

staging: octeon: add missing tasklet_kill in cvm_oct_tx_shutdown

The TX cleanup tasklet can be scheduled by the watchdog IRQ handler to execute cvm_oct_tx_do_cleanup. There can be a pending tasklet in the queue which might run after the cvm_oct_remove() frees net_device structures, causing a use-after-free in cvm_oct_tx_do_cleanup() as it iterates cvm_oct_device[] which is an array of netdevice pointers. Add tasklet_kill() after free_irq() to ensure the tasklet is no longer scheduled or running before teardown proceeds.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4898c560103fb8075c10a8e9d70e0ca26873075e < 32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486affected
LinuxLinux4898c560103fb8075c10a8e9d70e0ca26873075e < d15226338dfaa84ffff142d32723cdf74d0c47c4affected
LinuxLinux4898c560103fb8075c10a8e9d70e0ca26873075e < a77efd85e0d48c877f66d2bc3ab89cc1b8dacd19affected
LinuxLinux4898c560103fb8075c10a8e9d70e0ca26873075e < b6365e4186322858a82c8713b1d0bd209c8e765aaffected
LinuxLinux4898c560103fb8075c10a8e9d70e0ca26873075e < 03d12490afd1198310ad0aba42462329832eb739affected
LinuxLinux4898c560103fb8075c10a8e9d70e0ca26873075e < 2c0c9956596e48654bb4855e2a0742748a0826a7affected
LinuxLinux4898c560103fb8075c10a8e9d70e0ca26873075e < 41a79bd9e5a74f8f483b3b206d10567912874fb4affected
LinuxLinux4898c560103fb8075c10a8e9d70e0ca26873075e < b9af44b0d20b2247c4eb0ea5cfca907d643eea50affected
LinuxLinux2.6.34affected
LinuxLinux0 < 2.6.34unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References