CVE-2026-93279
staging: octeon: add missing tasklet_kill in cvm_oct_tx_shutdown
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.
INFO
Published Date :
Sept. 24, 2026, 4:17 p.m.
Last Modified :
Sept. 24, 2026, 4:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Schedule cleanup tasklet using tasklet_kill after free_irq.
- Ensure tasklet is not scheduled or running before teardown.
- Add missing tasklet_kill in cvm_oct_tx_shutdown.
- Apply the patch to the Linux kernel.
References to Advisories, Solutions, and Tools
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CVE-2026-93279.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-93279 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-93279
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 24, 2026
Action Type Old Value New Value Added 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/93xxx/CVE-2026-93279.json">CVE-2026-93279</a> Added Reference https://git.kernel.org/stable/c/03d12490afd1198310ad0aba42462329832eb739 Added Reference https://git.kernel.org/stable/c/2c0c9956596e48654bb4855e2a0742748a0826a7 Added Reference https://git.kernel.org/stable/c/32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486 Added Reference https://git.kernel.org/stable/c/41a79bd9e5a74f8f483b3b206d10567912874fb4 Added Reference https://git.kernel.org/stable/c/a77efd85e0d48c877f66d2bc3ab89cc1b8dacd19 Added Reference https://git.kernel.org/stable/c/b6365e4186322858a82c8713b1d0bd209c8e765a Added Reference https://git.kernel.org/stable/c/b9af44b0d20b2247c4eb0ea5cfca907d643eea50 Added Reference https://git.kernel.org/stable/c/d15226338dfaa84ffff142d32723cdf74d0c47c4