VulnerabilityPublished 18 Oct 2026

CVE-2026-98697: Linux kernel · USB: serial: fix dynamic id driver deregistration race

Source GCVE Database

Authoritative record:CVE-2026-98697

Not known to be exploited · fixed in ebd8fcaaacb66c15ae7e19d14619abe3762e0701 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in ebd8fcaaacb66c15ae7e19d14619abe3762e0701, 29172161236154f362e35694864cacbdeb07d060, 63594e8ffe097bc0b7639936f33799a7653dded2 +2

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-5qfj-x2wc-wcf3

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 93bacefc4cc0b53e1cb6a336d43847154fdf6886, < ebd8fcaaacb66c15ae7e19d14619abe3762e0701	Fixed in ebd8fcaaacb66c15ae7e19d14619abe3762e0701
LinuxLinux	Affected ≥ 93bacefc4cc0b53e1cb6a336d43847154fdf6886, < 29172161236154f362e35694864cacbdeb07d060	Fixed in 29172161236154f362e35694864cacbdeb07d060
LinuxLinux	Affected ≥ 93bacefc4cc0b53e1cb6a336d43847154fdf6886, < 63594e8ffe097bc0b7639936f33799a7653dded2	Fixed in 63594e8ffe097bc0b7639936f33799a7653dded2
LinuxLinux	Affected ≥ 93bacefc4cc0b53e1cb6a336d43847154fdf6886, < 380f57cd58e26e0f3687451196ec446c473c52d9	Fixed in 380f57cd58e26e0f3687451196ec446c473c52d9
LinuxLinux	Affected ≥ 93bacefc4cc0b53e1cb6a336d43847154fdf6886, < 4d6da6867b4ac6468d634a0dd3c35dfc0dc8af81	Fixed in 4d6da6867b4ac6468d634a0dd3c35dfc0dc8af81
LinuxLinux	Affected =2.6.21	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to address this race condition. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.

Description

A race condition vulnerability in the Linux kernel's USB serial driver related to dynamic ID driver deregistration has been resolved. The fix ensures that dynamic IDs are only freed after the driver is deregistered and the 'new_id' attribute is removed, preventing potential ID leaks caused by racing writes to the attribute.

References

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