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NVD / CVE Program· CNA Linux

CVE-2026-89852: scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 13d645a2cdb224d27205368f3e3c68bb160daf97, 1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79, 2f847f06bb223aa895eea91fc9e5e2d6314038eb; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 13d645a2cdb224d27205368f3e3c68bb160daf97, 1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79, 2f847f06bb223aa895eea91fc9e5e2d6314038eb; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state() The mbx_cmd_t is allocated on the stack but left uninitialized. qla2x00_mailbox_command() has several early-return paths (PCI permanent failure, device failed, EEH busy, ISP abort pending, mailbox access timeout, purge mbox) that return without writing the input mailbox registers back into mcp->mb[]. qla2x00_get_firmware_state() then unconditionally copies mcp->mb[1..6] (and mb[12]) into the caller's states[] array regardless of the return value. On such a failure the copied values are uninitialized kernel stack memory, which is then exposed to userspace via the fw_state and mpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query yields deterministic zeroed state instead of leaking stack contents.

—No exploit Fix available
Published
Sep 16, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.26affected
    • 4d4df1932b6b116aecc81039066fec27f2050762 and later · before f8fc5cc6b3284506c6ab83c822c48133377668bbaffected · git
    • 4d4df1932b6b116aecc81039066fec27f2050762 and later · before f29695b1138ae2539c5cd6cdaba9b1b072aaa81aaffected · git
    • 4d4df1932b6b116aecc81039066fec27f2050762 and later · before 13d645a2cdb224d27205368f3e3c68bb160daf97affected · git
    • 4d4df1932b6b116aecc81039066fec27f2050762 and later · before 2f847f06bb223aa895eea91fc9e5e2d6314038ebaffected · git
    • 4d4df1932b6b116aecc81039066fec27f2050762 and later · before 1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79affected · git
    • 4d4df1932b6b116aecc81039066fec27f2050762 and later · before e6cfb1ee18336aab41a0941d6d3ea5009aaafc05affected · git
    • 4d4df1932b6b116aecc81039066fec27f2050762 and later · before 9f31de4d07e4cde91dfc24522993a5fbb4d67083affected · git
    • 4d4df1932b6b116aecc81039066fec27f2050762 and later · before 9efaa782845b4d5fb3e01242be0d06ebc7428d8faffected · git
    • before 2.6.26not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-89850Sep 16, 2026 · scsi: qla2xxx: Don't query firmware state while chip is down
    0Monitor
  • ← EarlierCVE-2026-89851Sep 16, 2026 · scsi: qla2xxx: Fix FCE trace enable parsing in debugfs
    0Monitor
  • Later →CVE-2026-89853Sep 16, 2026 · scsi: qla2xxx: Fix FCE trace use-after-free during firmware dump
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux13d645a2cdb224d27205368f3e3c68bb160daf97Vendor (CNA)
Linux Linux1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79Vendor (CNA)
Linux Linux2f847f06bb223aa895eea91fc9e5e2d6314038ebVendor (CNA)
Linux Linux9efaa782845b4d5fb3e01242be0d06ebc7428d8fVendor (CNA)
Linux Linux9f31de4d07e4cde91dfc24522993a5fbb4d67083Vendor (CNA)
Linux Linuxe6cfb1ee18336aab41a0941d6d3ea5009aaafc05Vendor (CNA)
Linux Linuxf29695b1138ae2539c5cd6cdaba9b1b072aaa81aVendor (CNA)
Linux Linuxf8fc5cc6b3284506c6ab83c822c48133377668bbVendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0—Microsoft (MSRC)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.06.6.157.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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