VulnerabilityPublished 18 Oct 2026

CVE-2026-98587: Linux kernel · firewire: cdev: fix back-transition for iso_resource_auto client resource

Source GCVE Database

Authoritative record:CVE-2026-98587

Not known to be exploited : upgrade to ee1df60a0d0e8ab4b00137135733bdadd6d33dab or c6b51091cafff9ce6c03c1416aa13864d17ab97c when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in ee1df60a0d0e8ab4b00137135733bdadd6d33dab, c6b51091cafff9ce6c03c1416aa13864d17ab97c

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Oct 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.

ghsa-7hq7-xmgm-jjr4

What to do

Upgrade Linux kernel to ee1df60a0d0e8ab4b00137135733bdadd6d33dab or c6b51091cafff9ce6c03c1416aa13864d17ab97c.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ fcabbf40fae501379b4f3a057febe92d4b0ebdd8, < ee1df60a0d0e8ab4b00137135733bdadd6d33dab	Fixed in ee1df60a0d0e8ab4b00137135733bdadd6d33dab
LinuxLinux	Affected ≥ fcabbf40fae501379b4f3a057febe92d4b0ebdd8, < c6b51091cafff9ce6c03c1416aa13864d17ab97c	Fixed in c6b51091cafff9ce6c03c1416aa13864d17ab97c
LinuxLinux	Affected =7.2	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to prevent the back-transition of the iso_resource_auto client resource state. Users should apply the official kernel update containing this fix once available. Patch status is not explicitly confirmed in the provided data; check the vendor advisory for current remediation guidance.

Description

A vulnerability in the Linux kernel's FireWire cdev component involving improper state transitions in the iso_resource_auto client resource has been resolved. The issue allowed the state to incorrectly transition backwards due to concurrent access, potentially causing inconsistent resource management.

References

Community reviews

Loading reviews…