scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 7 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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().
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.273, 5.15.224, 6.1.191, 6.6.160, 6.12.112, 6.18.53, 7.2.5, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-89859
- 2026-10-03 Alias added: GHSA-77jx-g549-23wh
- 2026-10-03 Fix available: Linux/Linux@5dfc77099c7d9fde9520a229794b0154d7ccccc1, Linux/[email protected] · CNA
- 2026-10-03 1 new reference · CNA
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Fix available: Linux/Linux@2ecc30066c2284d2ed11bbd576ec97156b384054, Linux/[email protected] · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-30 Fix available: Linux/[email protected], Linux/[email protected], Linux/Linux@504b177ad58c45be7e1cfa81f9b42f7f040737c5 +3 · CNA
- 2026-10-30 3 new references · CNA
- 2026-11-04 Affected versions changed · Red Hat
- 2026-11-04 CVSS score added · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/eeef4fa993b3f962de9b45999f12ff25a5c79ce7
- https://git.kernel.org/stable/c/504b177ad58c45be7e1cfa81f9b42f7f040737c5
- https://git.kernel.org/stable/c/c3e4c716909a053391b06a9a816c8588b652e3d2
- https://git.kernel.org/stable/c/2ecc30066c2284d2ed11bbd576ec97156b384054
- https://git.kernel.org/stable/c/5dfc77099c7d9fde9520a229794b0154d7ccccc1
- https://git.kernel.org/stable/c/d6e2411516bb95e52cb74c9c56b60ad2548a2730
- https://git.kernel.org/stable/c/9fc03be982763a131913f84fe73b240ae45bca37
- https://git.kernel.org/stable/c/a152edab3854f01dd2daf3eaf8f32cbabdb3834e
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Sources
- CVE-2026-89859 · CVE Program
- CVE-2026-89859 · NVD
- FIRST EPSS
- GHSA-77jx-g549-23wh · GitHub Advisory Database · CC BY 4.0
- CVE-2026-89859 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences