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.

A flaw was found in the Linux kernel's Intelligent Platform Management Bus (IPMB) component. The IPMB event handler fails to initialize read bytes, which can lead to an uninitialized value being returned during an I2C (Inter-Integrated Circuit) read operation. This could allow a local attacker to obtain sensitive information from the system.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43221 https://nvd.nist.gov/vuln/detail/CVE-2026-43221 https://lore.kernel.org/linux-cve-announce/2026050653-CVE-2026-43221-a254@gregkh/T