VulnerabilityPublished 17 Sep 2026Updated 21 Oct 2026

CVE-2026-90267: Linux kernel · scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in e90f746f4ca3896ca560e820b7b6b0a467026938 : 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 e90f746f4ca3896ca560e820b7b6b0a467026938, bb31844d88b77138b67aa20c3600203baff40140, 744a65e113094756e6c1cfba9ff1bf4247cb68d4 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 17 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 ≥ 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87, < e90f746f4ca3896ca560e820b7b6b0a467026938	Fixed in e90f746f4ca3896ca560e820b7b6b0a467026938
LinuxLinux	Affected ≥ 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87, < bb31844d88b77138b67aa20c3600203baff40140	Fixed in bb31844d88b77138b67aa20c3600203baff40140
LinuxLinux	Affected ≥ 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87, < 744a65e113094756e6c1cfba9ff1bf4247cb68d4	Fixed in 744a65e113094756e6c1cfba9ff1bf4247cb68d4
LinuxLinux	Affected ≥ 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87, < 710a2448a06a8215ba8acb4a2791954800f7db0a	Fixed in 710a2448a06a8215ba8acb4a2791954800f7db0a
LinuxLinux	Affected ≥ 81d926e8b5520e38f1f72dd7bb7cfc81c1a69d87, < 5d7d1b8b525e5eff33a01d07dfcf7bdd3b6d790d	Fixed in 5d7d1b8b525e5eff33a01d07dfcf7bdd3b6d790d
LinuxLinux	Affected =4.12	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails sd_set_special_bvec() allocates a special payload page for UNMAP and WRITE SAME commands. If scsi_alloc_sgtables() fails afterward in sd_setup_unmap_cmnd() or sd_setup_write_same{10,16}_cmnd(), the SCSI midlayer does not call uninit_command() because RQF_DONTPREP is not set yet, leaking the page. Call sd_uninit_command() on error, and clear RQF_SPECIAL_PAYLOAD after freeing the page.

References

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