Bug 2540364 (CVE-2026-93279) - CVE-2026-93279 kernel: staging: octeon: add missing tasklet_kill in cvm_oct_tx_shutdown
Summary: CVE-2026-93279 kernel: staging: octeon: add missing tasklet_kill in cvm_oct_t...
Keywords:
Status: NEW
Alias: CVE-2026-93279
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 16:24 UTC by OSIDB Bzimport
Modified: 2026-09-28 13:28 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-09-24 16:24:14 UTC
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.


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