CVE-2026-72238

Summary

In the Linux kernel, the following vulnerability has been resolved:

x86/boot: Validate console=uart8250 baud rate to fix early boot hang

When the baud rate is empty, 0, invalid, or overflows to 0 when stored as an int, the system will hang during early boot because of a division by zero in early_serial_init().

Fall back to DEFAULT_BAUD when the resulting baud rate is 0 to prevent an early system hang.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxce0aa5dd20e44372f9617dd67c984f41fcdbed88 < c1a276a731d02cbb728d0530f327a68728f2d8b0affected
LinuxLinuxce0aa5dd20e44372f9617dd67c984f41fcdbed88 < 24fbed0a2a45f5f379ef2b53bd2abe58be1142adaffected
LinuxLinuxce0aa5dd20e44372f9617dd67c984f41fcdbed88 < efa96a22613b86e05cd81229ce0be411c1a4a79aaffected
LinuxLinuxce0aa5dd20e44372f9617dd67c984f41fcdbed88 < 9a77a7639dfdc3eca417cd37620ce64da79c80c4affected
LinuxLinuxce0aa5dd20e44372f9617dd67c984f41fcdbed88 < b4d05032e9af7137eab8f3af2855073f896ca843affected
LinuxLinuxce0aa5dd20e44372f9617dd67c984f41fcdbed88 < f7c67c97b37c11f2a95c204092fb8159f2779e8faffected
LinuxLinuxce0aa5dd20e44372f9617dd67c984f41fcdbed88 < 4dad7e870c7e5178f71b5e1e4f67934b9e8cc207affected
LinuxLinuxce0aa5dd20e44372f9617dd67c984f41fcdbed88 < ffa0aa5b625fe0bed7463ac613f8b06676ff4542affected
LinuxLinux2.6.36affected
LinuxLinux0 < 2.6.36unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References