CVE-2026-93279
Description
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.
How to fix
- Linux Linux32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486, d15226338dfaa84ffff142d32723cdf74d0c47c4, a77efd85e0d48c877f66d2bc3ab89cc1b8dacd19, b6365e4186322858a82c8713b1d0bd209c8e765a, 03d12490afd1198310ad0aba42462329832eb739, 2c0c9956596e48654bb4855e2a0742748a0826a7, 41a79bd9e5a74f8f483b3b206d10567912874fb4, b9af44b0d20b2247c4eb0ea5cfca907d643eea50 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 4898c560103fb8075c10a8e9d70e0ca26873075e ≤ v < 32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486, 4898c560103fb8075c10a8e9d70e0ca26873075e ≤ v < d15226338dfaa84ffff142d32723cdf74d0c47c4, 4898c560103fb8075c10a8e9d70e0ca26873075e ≤ v < a77efd85e0d48c877f66d2bc3ab89cc1b8dacd19, 4898c560103fb8075c10a8e9d70e0ca26873075e ≤ v < b6365e4186322858a82c8713b1d0bd209c8e765a, 4898c560103fb8075c10a8e9d70e0ca26873075e ≤ v < 03d12490afd1198310ad0aba42462329832eb739, 4898c560103fb8075c10a8e9d70e0ca26873075e ≤ v < 2c0c9956596e48654bb4855e2a0742748a0826a7, 4898c560103fb8075c10a8e9d70e0ca26873075e ≤ v < 41a79bd9e5a74f8f483b3b206d10567912874fb4, 4898c560103fb8075c10a8e9d70e0ca26873075e ≤ v < b9af44b0d20b2247c4eb0ea5cfca907d643eea50, 2.6.34 | 32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486, d15226338dfaa84ffff142d32723cdf74d0c47c4, a77efd85e0d48c877f66d2bc3ab89cc1b8dacd19, b6365e4186322858a82c8713b1d0bd209c8e765a, 03d12490afd1198310ad0aba42462329832eb739, 2c0c9956596e48654bb4855e2a0742748a0826a7, 41a79bd9e5a74f8f483b3b206d10567912874fb4, b9af44b0d20b2247c4eb0ea5cfca907d643eea50 |
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