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NVD / CVE Program· CNA Linux

CVE-2026-89859: scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak

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: 0.23% (FIRST EPSS).
  • Fixed version: Linux Linux 2ecc30066c2284d2ed11bbd576ec97156b384054, 504b177ad58c45be7e1cfa81f9b42f7f040737c5, 5dfc77099c7d9fde9520a229794b0154d7ccccc1; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 2ecc30066c2284d2ed11bbd576ec97156b384054, 504b177ad58c45be7e1cfa81f9b42f7f040737c5, 5dfc77099c7d9fde9520a229794b0154d7ccccc1; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 Release Notes; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes 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 dport diagnostics buffer to avoid info leak qla2x00_do_dport_diagnostics() allocates the qla_dport_diag response buffer with kmalloc_obj() (non-zeroing) and, on success, copies the full sizeof(*dd) back to user space via sg_copy_from_buffer(). The inbound sg_copy_to_buffer() only fills as many bytes as the user request payload provides, and qla26xx_dport_diagnostics() zeroes only dd->buf. The options and unused[] fields are therefore copied out uninitialized, leaking kernel heap contents to user space. Allocate with kzalloc_obj(), matching qla2x00_do_dport_diagnostics_v2().

—No exploit Fix available
Published
Sep 16, 2026
Updated
Oct 30, 2026
EPSS
0.2% · 14th 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%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • 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

    • 4.8affected
    • ec89146215d124c429bff84b498dccdc4919ffa7 and later · before eeef4fa993b3f962de9b45999f12ff25a5c79ce7affected · git
    • ec89146215d124c429bff84b498dccdc4919ffa7 and later · before 504b177ad58c45be7e1cfa81f9b42f7f040737c5affected · git
    • ec89146215d124c429bff84b498dccdc4919ffa7 and later · before c3e4c716909a053391b06a9a816c8588b652e3d2affected · git
    • ec89146215d124c429bff84b498dccdc4919ffa7 and later · before 2ecc30066c2284d2ed11bbd576ec97156b384054affected · git
    • ec89146215d124c429bff84b498dccdc4919ffa7 and later · before 5dfc77099c7d9fde9520a229794b0154d7ccccc1affected · git
    • ec89146215d124c429bff84b498dccdc4919ffa7 and later · before d6e2411516bb95e52cb74c9c56b60ad2548a2730affected · git
    • ec89146215d124c429bff84b498dccdc4919ffa7 and later · before 9fc03be982763a131913f84fe73b240ae45bca37affected · git
    • ec89146215d124c429bff84b498dccdc4919ffa7 and later · before a152edab3854f01dd2daf3eaf8f32cbabdb3834eaffected · git
    • before 4.8not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
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-2026-89857Sep 16, 2026 · scsi: qla2xxx: Hold qpair lock when sending NVMe LS reject
    39Monitor
  • ← EarlierCVE-2026-89858Sep 16, 2026 · scsi: qla2xxx: Bound image count in qla2x00_update_fru_versions()
    0Monitor
  • Later →CVE-2026-89860Sep 16, 2026 · scsi: qla2xxx: Initialize NVMe abort_work once at submission
    35Monitor

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 Linux2ecc30066c2284d2ed11bbd576ec97156b384054Vendor (CNA)
Linux Linux504b177ad58c45be7e1cfa81f9b42f7f040737c5Vendor (CNA)
Linux Linux5dfc77099c7d9fde9520a229794b0154d7ccccc1Vendor (CNA)
Linux Linux9fc03be982763a131913f84fe73b240ae45bca37Vendor (CNA)
Linux Linuxa152edab3854f01dd2daf3eaf8f32cbabdb3834eVendor (CNA)
Linux Linuxc3e4c716909a053391b06a9a816c8588b652e3d2Vendor (CNA)
Linux Linuxd6e2411516bb95e52cb74c9c56b60ad2548a2730Vendor (CNA)
Linux Linuxeeef4fa993b3f962de9b45999f12ff25a5c79ce7Vendor (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 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 kernel 6.6.159.1-1 on Azure Linux 3.06.6.161.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux7.2.6-1 · Debian:14Package registry (OSV)
debian:linux-6.126.12.113-1~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.

All records