CVE-2026-43221: Linux kernel · ipmi: ipmb: initialise event handler read bytes
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 11 Nov 2026, 23:24 UTC
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 evidence
Disclosed: evidence found.
CVE published 6 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 11 Nov 2026.
Description
In the Linux kernel, the following vulnerability has been resolved: ipmi: ipmb: initialise event handler read bytes IPMB doesn't use i2c reads, but the handler needs to set a value. Otherwise an i2c read will return an uninitialised value from the bus driver.
References
- git.kernel.org/stable/c/905554ebd76aeee370bfd5136ea11e0b9d75c6f1 (opens in a new tab)
- git.kernel.org/stable/c/56d5c0557e53c4d8d92a619fa83eaae178165e07 (opens in a new tab)
- git.kernel.org/stable/c/2dfbc8c17dd161885336e77e71c336cd62cf6748 (opens in a new tab)
- git.kernel.org/stable/c/f726b3a57e00bb6249c67714c11ae8b4b31719a1 (opens in a new tab)
- git.kernel.org/stable/c/102712417bb6aa9a00d852bc59cb0a276db486c4 (opens in a new tab)
- git.kernel.org/stable/c/9f235ccecd03c436cb1683eac16b12f119e54aa9 (opens in a new tab)