CVE-2026-64474: Linux kernel · vfio: prevent infinite loop in vfio_mig_get_next_state() on blocked arc
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 3 Nov 2026, 19:29 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 25 Jul 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 3 Nov 2026.
What to do
AI-suggested
Until a fix is applied, avoid configurations or device states that trigger the blocked transitions causing the infinite loop. Monitor vendor channels for an official fix.
Description
A vulnerability in the Linux kernel's vfio driver causes an infinite loop in the vfio_mig_get_next_state() function when encountering a blocked transition state. This infinite loop occurs due to improper handling of an ERROR sentinel value during state transitions, which can lead to a soft lockup or kernel panic if softlockup_panic is enabled.
References
- git.kernel.org/stable/c/8e872c07e40d51a66dee7b280a23a460a2e1e3fa (opens in a new tab)
- git.kernel.org/stable/c/ed7d5599e6c398da74845767cd1e6a8370a160fc (opens in a new tab)
- git.kernel.org/stable/c/7f2d6b31089e48db4653df832c9a6afdde9a1c29 (opens in a new tab)
- git.kernel.org/stable/c/a3a8afa2f6e7f0dc266d08f02be3f3054241ba47 (opens in a new tab)
- git.kernel.org/stable/c/a26b499b757cfc8bbff1088bb1b844639e250893 (opens in a new tab)