VulnerabilityPublished 18 Oct 2026

CVE-2026-98562: Linux kernel · net: libwx: fix races in Tx timestamp handling

Source GCVE Database

Authoritative record:CVE-2026-98562· Medium

Not known to be exploited : upgrade to e78b95cfd5df25d0c562aaef95d3c7fe6c7e0e66 or 3173cba1170131816972ed2b6185cb970ba8b747 when convenient.

Data as of 26 Oct 2026, 13:47 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 e78b95cfd5df25d0c562aaef95d3c7fe6c7e0e66, 3173cba1170131816972ed2b6185cb970ba8b747

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-44w9-74gm-gcrx

What to do

Upgrade Linux kernel to e78b95cfd5df25d0c562aaef95d3c7fe6c7e0e66 or 3173cba1170131816972ed2b6185cb970ba8b747.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 06e75161b9d4833518a7c266310a0635eab50616, < e78b95cfd5df25d0c562aaef95d3c7fe6c7e0e66	Fixed in e78b95cfd5df25d0c562aaef95d3c7fe6c7e0e66
LinuxLinux	Affected ≥ 06e75161b9d4833518a7c266310a0635eab50616, < 3173cba1170131816972ed2b6185cb970ba8b747	Fixed in 3173cba1170131816972ed2b6185cb970ba8b747
LinuxLinux	Affected =6.15	Fixed in–
Debiandebian/linux`pkg:deb/debian/linux`Other threats	Affected =6.15	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix has been implemented in the Linux kernel to address the race conditions by adding a dedicated spinlock and improving synchronization in the Tx timestamp handling paths. Users should update to the patched kernel version containing this fix. No additional mitigation steps are indicated.

Description

A race condition vulnerability in the Linux kernel's net: libwx Tx timestamp handling was resolved. The issue involved improper synchronization of shared skb pointers between transmission, timestamp worker, and cleanup paths, potentially causing double frees or reference leaks. A dedicated spinlock was introduced to serialize access and prevent these race conditions. This fix addresses stability and memory management issues in the affected kernel component.

References

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