VulnerabilityPublished 16 Sep 2026Updated 21 Oct 2026

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

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in d6e2411516bb95e52cb74c9c56b60ad2548a2730 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in d6e2411516bb95e52cb74c9c56b60ad2548a2730, a152edab3854f01dd2daf3eaf8f32cbabdb3834e, 9fc03be982763a131913f84fe73b240ae45bca37 +2

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.

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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ ec89146215d124c429bff84b498dccdc4919ffa7, < d6e2411516bb95e52cb74c9c56b60ad2548a2730	Fixed in d6e2411516bb95e52cb74c9c56b60ad2548a2730
LinuxLinux	Affected ≥ ec89146215d124c429bff84b498dccdc4919ffa7, < a152edab3854f01dd2daf3eaf8f32cbabdb3834e	Fixed in a152edab3854f01dd2daf3eaf8f32cbabdb3834e
LinuxLinux	Affected ≥ ec89146215d124c429bff84b498dccdc4919ffa7, < 9fc03be982763a131913f84fe73b240ae45bca37	Fixed in 9fc03be982763a131913f84fe73b240ae45bca37
LinuxLinux	Affected ≥ ec89146215d124c429bff84b498dccdc4919ffa7, < 5dfc77099c7d9fde9520a229794b0154d7ccccc1	Fixed in 5dfc77099c7d9fde9520a229794b0154d7ccccc1
LinuxLinux	Affected ≥ ec89146215d124c429bff84b498dccdc4919ffa7, < 2ecc30066c2284d2ed11bbd576ec97156b384054	Fixed in 2ecc30066c2284d2ed11bbd576ec97156b384054
LinuxLinux	Affected =4.8	Fixed in–

Description

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().

References

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