VulnerabilityPublished 25 Sep 2026Updated 30 Oct 2026

CVE-2026-97530: Linux kernel · scsi: qla2xxx: Fix soft lockup polling continuation IOCB signature

Source GCVE Database

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Authoritative record:CVE-2026-97530· High

Not known to be exploited · fixed in d7e3fa7d06bf7fcaac186d3c4d635caac166d36c : patch Linux kernel soon.

Data as of 30 Oct 2026, 17:48 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Patch: Available – fixed in d7e3fa7d06bf7fcaac186d3c4d635caac166d36c, bded2de273c5b0e50e3e23de937260436cd67df2, 428e244dd4066abd40ca1ec525b7aab9a9db8296 +4

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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-m367-5qfc-ghvx

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 9f2475fe7406b8ef5f97099c4980021344872d9f, < d7e3fa7d06bf7fcaac186d3c4d635caac166d36c	Fixed in d7e3fa7d06bf7fcaac186d3c4d635caac166d36c
LinuxLinux	Affected ≥ 9f2475fe7406b8ef5f97099c4980021344872d9f, < bded2de273c5b0e50e3e23de937260436cd67df2	Fixed in bded2de273c5b0e50e3e23de937260436cd67df2
LinuxLinux	Affected ≥ 9f2475fe7406b8ef5f97099c4980021344872d9f, < 428e244dd4066abd40ca1ec525b7aab9a9db8296	Fixed in 428e244dd4066abd40ca1ec525b7aab9a9db8296
LinuxLinux	Affected ≥ 9f2475fe7406b8ef5f97099c4980021344872d9f, < 70df7f03499046da0d28a58ec8b237ed5dfbd0a7	Fixed in 70df7f03499046da0d28a58ec8b237ed5dfbd0a7
LinuxLinux	Affected ≥ 9f2475fe7406b8ef5f97099c4980021344872d9f, < 6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16	Fixed in 6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16
LinuxLinux	Affected ≥ 9f2475fe7406b8ef5f97099c4980021344872d9f, < 6aa722fca9d2aa1f64094101587f8f4a2f83f6aa	Fixed in 6aa722fca9d2aa1f64094101587f8f4a2f83f6aa

AI-suggested

A fix has been implemented in the Linux kernel to remove the problematic signature polling and improve IOCB availability checks. Users should apply the official kernel updates that include this fix. Since the vulnerability is resolved by this patch, no additional mitigation is required.

Description

A vulnerability in the Linux kernel's qla2xxx SCSI driver causes a CPU soft lockup due to an infinite polling loop triggered by misinterpreting certain Fibre Channel frame payloads. This occurs because the driver spins waiting for a signature value that can be falsely matched by payload data, leading to a hang in interrupt context. The issue has been fixed by removing the problematic polling and relying on safer checks to detect continuation IOCBs.

Impact

This vulnerability causes a CPU soft lockup (hang) in the Linux kernel when processing certain Fibre Channel frames, potentially leading to degraded system responsiveness or denial of service conditions on affected systems running the vulnerable qla2xxx driver.

Summary

The Linux kernel qla2xxx driver contained a flaw in qla27xx_copy_multiple_pkt() and qla27xx_copy_fpin_pkt() where they polled rsp_q->ring_ptr->signature for a specific value (0xDEADDEAD) to detect arrival of continuation IOCBs. However, the signature field overlaps with raw Fibre Channel frame payload bytes, so a payload matching 0xDEADDEAD caused the polling loop to spin indefinitely, resulting in a CPU soft lockup in interrupt or deferred procedure call context. The polling was unnecessary because callers already verified IOCB availability. The fix removes the signature polling, retains the entry_type guard, and gates the FPIN path on IOCB availability to avoid reading the signature field on continuation IOCBs, eliminating the lockup.

References

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