CVE-2026-89850: Linux kernel · scsi: qla2xxx: Don't query firmware state while chip is down
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 16 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.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| 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 this issue by modifying the qla2xxx driver behavior as described. Users should apply the updated kernel versions containing this fix to mitigate the vulnerability. Patch status is not explicitly stated in the input data; therefore, check the vendor advisory for current remediation guidance.
Description
A vulnerability in the Linux kernel's qla2xxx SCSI driver could cause the adapter to hang during ISP reset or PCI error recovery. The issue arises from querying firmware state while the chip is down or EEH is busy, leading to unsynchronized mailbox commands and potential hangs. The flaw has been resolved by ensuring mailbox commands are issued only once, inside a mutex, and only when the chip is operational.
References
- ubuntu.com/security/CVE-2026-89850 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-89850 (opens in a new tab)
- git.kernel.org/linus/e0cebe20dcffbed9c078fe30e2d18cd5046d9eff (opens in a new tab)
- msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-89850.json (opens in a new tab)
- support.microsoft.com/lifecycle (opens in a new tab)
- first.org/cvss (opens in a new tab)