VulnerabilityPublished 25 Mar 2026Updated 5 Nov 2026

CVE-2026-23282: Linux kernel · smb: client: fix oops due to uninitialised var in smb2_unlink()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in dc710c87af3341554d02d634ada1d2036c49a94a : update Linux kernel when convenient.

Data as of 5 Nov 2026, 23:24 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

EPSS

0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in dc710c87af3341554d02d634ada1d2036c49a94a, 86163b98891aa9800f6103252e5acc7bb98afb91, 048efe129a297256d3c2088cf8d79515ff5ec864

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 5 Nov 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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 Linux kernel to dc710c87af3341554d02d634ada1d2036c49a94a, 86163b98891aa9800f6103252e5acc7bb98afb91 or 048efe129a297256d3c2088cf8d79515ff5ec864.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 1cf9f2a6a544288516a7b9e883a48eba6246bcf2, < dc710c87af3341554d02d634ada1d2036c49a94a	Fixed in dc710c87af3341554d02d634ada1d2036c49a94a
LinuxLinux	Affected ≥ 1cf9f2a6a544288516a7b9e883a48eba6246bcf2, < 86163b98891aa9800f6103252e5acc7bb98afb91	Fixed in 86163b98891aa9800f6103252e5acc7bb98afb91
LinuxLinux	Affected ≥ 1cf9f2a6a544288516a7b9e883a48eba6246bcf2, < 048efe129a297256d3c2088cf8d79515ff5ec864	Fixed in 048efe129a297256d3c2088cf8d79515ff5ec864
LinuxLinux	Affected =6.17	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix oops due to uninitialised var in smb2_unlink() If SMB2_open_init() or SMB2_close_init() fails (e.g. reconnect), the iovs set @rqst will be left uninitialised, hence calling SMB2_open_free(), SMB2_close_free() or smb2_set_related() on them will oops. Fix this by initialising @close_iov and @open_iov before setting them in @rqst.

References

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