VulnerabilityPublished 24 Sep 2026Updated 19 Oct 2026

CVE-2026-93279: Linux kernel · staging: octeon: add missing tasklet_kill in cvm_oct_tx_shutdown

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in d15226338dfaa84ffff142d32723cdf74d0c47c4 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

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.
Patch: Available – fixed in d15226338dfaa84ffff142d32723cdf74d0c47c4, b6365e4186322858a82c8713b1d0bd209c8e765a, b9af44b0d20b2247c4eb0ea5cfca907d643eea50 +5

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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 4898c560103fb8075c10a8e9d70e0ca26873075e, < d15226338dfaa84ffff142d32723cdf74d0c47c4	Fixed in d15226338dfaa84ffff142d32723cdf74d0c47c4
LinuxLinux	Affected ≥ 4898c560103fb8075c10a8e9d70e0ca26873075e, < b6365e4186322858a82c8713b1d0bd209c8e765a	Fixed in b6365e4186322858a82c8713b1d0bd209c8e765a
LinuxLinux	Affected ≥ 4898c560103fb8075c10a8e9d70e0ca26873075e, < b9af44b0d20b2247c4eb0ea5cfca907d643eea50	Fixed in b9af44b0d20b2247c4eb0ea5cfca907d643eea50
LinuxLinux	Affected ≥ 4898c560103fb8075c10a8e9d70e0ca26873075e, < a77efd85e0d48c877f66d2bc3ab89cc1b8dacd19	Fixed in a77efd85e0d48c877f66d2bc3ab89cc1b8dacd19
LinuxLinux	Affected ≥ 4898c560103fb8075c10a8e9d70e0ca26873075e, < 41a79bd9e5a74f8f483b3b206d10567912874fb4	Fixed in 41a79bd9e5a74f8f483b3b206d10567912874fb4
LinuxLinux	Affected ≥ 4898c560103fb8075c10a8e9d70e0ca26873075e, < 32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486	Fixed in 32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486

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

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