CVE-2026-93279: Linux kernel · staging: octeon: add missing tasklet_kill in cvm_oct_tx_shutdown
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.
References
- ubuntu.com/security/CVE-2026-93279 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-93279 (opens in a new tab)
- git.kernel.org/stable/c/41a79bd9e5a74f8f483b3b206d10567912874fb4 (opens in a new tab)
- git.kernel.org/stable/c/b6365e4186322858a82c8713b1d0bd209c8e765a (opens in a new tab)
- git.kernel.org/stable/c/a77efd85e0d48c877f66d2bc3ab89cc1b8dacd19 (opens in a new tab)
- git.kernel.org/stable/c/d15226338dfaa84ffff142d32723cdf74d0c47c4 (opens in a new tab)
- git.kernel.org/stable/c/b9af44b0d20b2247c4eb0ea5cfca907d643eea50 (opens in a new tab)
- git.kernel.org/stable/c/03d12490afd1198310ad0aba42462329832eb739 (opens in a new tab)
- git.kernel.org/stable/c/32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486 (opens in a new tab)
- git.kernel.org/stable/c/2c0c9956596e48654bb4855e2a0742748a0826a7 (opens in a new tab)