VulnerabilityPublished 28 Oct 2026

CVE-2026-99206: Linux kernel · scsi: target: iscsi: Fix race in discovery auth updates

Source GCVE Database

Authoritative record:CVE-2026-99206

Not known to be exploited · fixed in e15b81f602edbdee39c335546f25486a1747f3f0 : update Linux kernel when convenient.

Data as of 28 Oct 2026, 13:30 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Patch: Available – fixed in e15b81f602edbdee39c335546f25486a1747f3f0, 9b07828b133b326cb4fb59f144ca37f8db535999, 6caa2b3edb7da4f50a38e16561b75fcae21d4099

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Oct 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.

ghsa-mw2h-565q-xw3m

What to do

Upgrade Linux kernel to e15b81f602edbdee39c335546f25486a1747f3f0, 9b07828b133b326cb4fb59f144ca37f8db535999 or 6caa2b3edb7da4f50a38e16561b75fcae21d4099.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ e48354ce078c079996f89d715dfa44814b4eba01, < e15b81f602edbdee39c335546f25486a1747f3f0	Fixed in e15b81f602edbdee39c335546f25486a1747f3f0
LinuxLinux	Affected ≥ e48354ce078c079996f89d715dfa44814b4eba01, < 9b07828b133b326cb4fb59f144ca37f8db535999	Fixed in 9b07828b133b326cb4fb59f144ca37f8db535999
LinuxLinux	Affected ≥ e48354ce078c079996f89d715dfa44814b4eba01, < 6caa2b3edb7da4f50a38e16561b75fcae21d4099	Fixed in 6caa2b3edb7da4f50a38e16561b75fcae21d4099
LinuxLinux	Affected =3.1	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel by adding proper locking to prevent concurrent updates causing double-free. Users should apply the official kernel updates that include this fix once available.

Description

A race condition vulnerability in the Linux kernel's iSCSI target discovery authentication updates could cause a double-free memory error. This occurs when separate configfs opens concurrently update the discovery AuthMethod parameter without proper synchronization.

References

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