VulnerabilityPublished 18 Oct 2026

CVE-2026-98474: Linux kernel · s390/pci: Fix missing device lock in zpci_report_status()

Source GCVE Database

Authoritative record:CVE-2026-98474· Medium

Not known to be exploited · fixed in 743a8458978d13d84a1cf74bcd29b9959a75d3a0 : update Linux kernel 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 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 743a8458978d13d84a1cf74bcd29b9959a75d3a0, 0261aef4b15efcee2860ab857e5cb05e9bfa47b0, 1b957d5c2f737cda731cb1a1b71a7524d54538f2

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-m978-pm8w-665r

What to do

Upgrade Linux kernel to 743a8458978d13d84a1cf74bcd29b9959a75d3a0, 0261aef4b15efcee2860ab857e5cb05e9bfa47b0 or 1b957d5c2f737cda731cb1a1b71a7524d54538f2.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 4ec6054e7321dc24ebccaa08b3af0d590f5666e6, < 743a8458978d13d84a1cf74bcd29b9959a75d3a0	Fixed in 743a8458978d13d84a1cf74bcd29b9959a75d3a0
LinuxLinux	Affected ≥ 4ec6054e7321dc24ebccaa08b3af0d590f5666e6, < 0261aef4b15efcee2860ab857e5cb05e9bfa47b0	Fixed in 0261aef4b15efcee2860ab857e5cb05e9bfa47b0
LinuxLinux	Affected ≥ 4ec6054e7321dc24ebccaa08b3af0d590f5666e6, < 1b957d5c2f737cda731cb1a1b71a7524d54538f2	Fixed in 1b957d5c2f737cda731cb1a1b71a7524d54538f2
LinuxLinux	Affected =6.14	Fixed in–

AI-suggested

An official fix has been applied to the Linux kernel source code to address this issue. Users should update to a kernel version that includes this patch to ensure the device lock is properly held during zpci_report_status() execution. No additional mitigation steps are indicated.

Description

A vulnerability in the Linux kernel's s390 PCI subsystem was fixed by ensuring a missing device lock is held in the zpci_report_status() function when the device pointer (pdev) is non-NULL. This fix prevents inconsistent device driver state during recovery by expanding the critical section protected by the device lock and adding lockdep assertions.

References

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