VulnerabilityPublished 27 May 2026Updated 6 Nov 2026

CVE-2026-46095: Linux kernel · md/md-llbitmap: raise barrier before state machine transition

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in ef4ca3d4bf09716cff9ba00eb0351deadc8417ab : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 UTC

Severity

Unrated

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

Thin evidence

One scorer or none

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, 2026-11-06.

Patch

Available – fixed in ef4ca3d4bf09716cff9ba00eb0351deadc8417ab, 9701d51dd378380ba05293fa391e8ba01065ae8d, 9142f00a9287ca38152717e3e88a033a27774e7f

Exploitation evidence

Disclosed: evidence found.
CVE published 27 May 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 6 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 ef4ca3d4bf09716cff9ba00eb0351deadc8417ab, 9701d51dd378380ba05293fa391e8ba01065ae8d or 9142f00a9287ca38152717e3e88a033a27774e7f.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 5ab829f1971dc99f2aac10846c378e67fc875abc, < ef4ca3d4bf09716cff9ba00eb0351deadc8417ab	Fixed in ef4ca3d4bf09716cff9ba00eb0351deadc8417ab
LinuxLinux	Affected ≥ 5ab829f1971dc99f2aac10846c378e67fc875abc, < 9701d51dd378380ba05293fa391e8ba01065ae8d	Fixed in 9701d51dd378380ba05293fa391e8ba01065ae8d
LinuxLinux	Affected ≥ 5ab829f1971dc99f2aac10846c378e67fc875abc, < 9142f00a9287ca38152717e3e88a033a27774e7f	Fixed in 9142f00a9287ca38152717e3e88a033a27774e7f
LinuxLinux	Affected =6.18	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: raise barrier before state machine transition Move the barrier raise operation before calling llbitmap_state_machine() in both llbitmap_start_write() and llbitmap_start_discard(). This ensures the barrier is in place before any state transitions occur, preventing potential race conditions where the state machine could complete before the barrier is properly raised.

References

Community reviews

Loading reviews…