VulnerabilityPublished 17 Sep 2026Updated 21 Oct 2026

CVE-2026-90213: Linux kernel · firewire: core: fix memory leak in error path of build_tree()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in d6037e42aa4dd29bb9d9f67ef438128c5bfe3448 : 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 d6037e42aa4dd29bb9d9f67ef438128c5bfe3448, 848eaef4d30b385eb074214b7fa58287506158ad, 45c534c5bf43a094805a79510d1ea3ca261ea042 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 17 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 ≥ 3038e353cfaf548eb94f02b172b9dbe412abd24c, < d6037e42aa4dd29bb9d9f67ef438128c5bfe3448	Fixed in d6037e42aa4dd29bb9d9f67ef438128c5bfe3448
LinuxLinux	Affected ≥ 3038e353cfaf548eb94f02b172b9dbe412abd24c, < 848eaef4d30b385eb074214b7fa58287506158ad	Fixed in 848eaef4d30b385eb074214b7fa58287506158ad
LinuxLinux	Affected ≥ 3038e353cfaf548eb94f02b172b9dbe412abd24c, < 45c534c5bf43a094805a79510d1ea3ca261ea042	Fixed in 45c534c5bf43a094805a79510d1ea3ca261ea042
LinuxLinux	Affected ≥ 3038e353cfaf548eb94f02b172b9dbe412abd24c, < 6a990e74d4e848f32eda91d69e4f885604fc326d	Fixed in 6a990e74d4e848f32eda91d69e4f885604fc326d
LinuxLinux	Affected ≥ 3038e353cfaf548eb94f02b172b9dbe412abd24c, < 05bfb1327dc5fb61528bab31cd8f0c1e4bddec23	Fixed in 05bfb1327dc5fb61528bab31cd8f0c1e4bddec23
LinuxLinux	Affected =2.6.22	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: firewire: core: fix memory leak in error path of build_tree() In the error path of build_tree(), node instances can remain in the local linked list when the function returns. Whenever an invalid value is detected in the self ID sequence, each allocated node instance is either an entry in the linked list or an entry in the ports array of its parent node. Therefore, the allocate node instances can be safely released by traversing the linked list from its head. Release the remaining node instances with for_each_fw_node() before returning to the caller.

References

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