VulnerabilityPublished 28 Aug 2026Updated 21 Oct 2026

CVE-2026-80607: Linux kernel · tracing/probes: Remove WARN_ON_ONCE from parse_btf_arg

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f148f86c65b8f9ef2466ad8506e721749e4957fb : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f148f86c65b8f9ef2466ad8506e721749e4957fb, e177f1530af440d9330c149080aa3b24ddefa18b, 251a8fe1b9aedccd298b77bc28426d564c5a923f +2

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Aug 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 ≥ b576e09701c7d045bbe5cd85d53e2f34426aa214, < f148f86c65b8f9ef2466ad8506e721749e4957fb	Fixed in f148f86c65b8f9ef2466ad8506e721749e4957fb
LinuxLinux	Affected ≥ b576e09701c7d045bbe5cd85d53e2f34426aa214, < e177f1530af440d9330c149080aa3b24ddefa18b	Fixed in e177f1530af440d9330c149080aa3b24ddefa18b
LinuxLinux	Affected ≥ b576e09701c7d045bbe5cd85d53e2f34426aa214, < 251a8fe1b9aedccd298b77bc28426d564c5a923f	Fixed in 251a8fe1b9aedccd298b77bc28426d564c5a923f
LinuxLinux	Affected ≥ b576e09701c7d045bbe5cd85d53e2f34426aa214, < 24a753a49d06813a156695e3804dcc11c7fdef07	Fixed in 24a753a49d06813a156695e3804dcc11c7fdef07
LinuxLinux	Affected ≥ b576e09701c7d045bbe5cd85d53e2f34426aa214, < 8a662d8c05e2cf16f7a047c81bc1eb5d3b29bacd	Fixed in 8a662d8c05e2cf16f7a047c81bc1eb5d3b29bacd
LinuxLinux	Affected =6.5	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: tracing/probes: Remove WARN_ON_ONCE from parse_btf_arg Sashiko found that user can cause this WARN_ON_ONCE() easily with adding a kprobe event based on a raw address with BTF parameter. Since this is not an unexpected condition, remove the WARN_ON_ONCE().

References

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