VulnerabilityPublished 17 Sep 2026Updated 21 Oct 2026

CVE-2026-90150: Linux kernel · pnfs/blocklayout: Fix device leaks on parse failure

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in c056f817e4200fb18079d5052c273a22f191ff0a : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in c056f817e4200fb18079d5052c273a22f191ff0a, 51d162dfb618f6cf3aa5e331c0305e27771ad884, 23e4162405c456ce12c772d5882d306135e828ae +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 ≥ 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4, < c056f817e4200fb18079d5052c273a22f191ff0a	Fixed in c056f817e4200fb18079d5052c273a22f191ff0a
LinuxLinux	Affected ≥ 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4, < 51d162dfb618f6cf3aa5e331c0305e27771ad884	Fixed in 51d162dfb618f6cf3aa5e331c0305e27771ad884
LinuxLinux	Affected ≥ 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4, < 23e4162405c456ce12c772d5882d306135e828ae	Fixed in 23e4162405c456ce12c772d5882d306135e828ae
LinuxLinux	Affected ≥ 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4, < 8a2494964edac2a13e82441c2bf887548dc3be0b	Fixed in 8a2494964edac2a13e82441c2bf887548dc3be0b
LinuxLinux	Affected ≥ 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4, < 1e1c36b206c659cf94c6755a1d821ed1babd32bc	Fixed in 1e1c36b206c659cf94c6755a1d821ed1babd32bc
LinuxLinux	Affected =3.18	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: pnfs/blocklayout: Fix device leaks on parse failure bl_parse_concat() and bl_parse_stripe() allocate a child device array and then parse each child in turn. If parsing a child fails, the failed child is not counted in nr_children and the parent may be left with a children array that bl_free_device() will not release when nr_children is zero. Release the failed child and the already parsed children before returning the error. Also make bl_free_device() release the child array whenever the children pointer is set, so that partially initialised concat or stripe devices are cleaned up correctly. bl_parse_scsi() can also fail after assigning d->bdev_file and dropping the file reference. Clear the pointer after fput() so that an outer cleanup path does not put it again.

References

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