CVE-2026-72238
x86/boot: Validate console=uart8250 baud rate to fix early boot hang
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
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Affected Versions
Linux / Linux
ce0aa5dd20e44372f9617dd67c984f41fcdbed88 < c1a276a731d02cbb728d0530f327a68728f2d8b0 ce0aa5dd20e44372f9617dd67c984f41fcdbed88 < 24fbed0a2a45f5f379ef2b53bd2abe58be1142ad ce0aa5dd20e44372f9617dd67c984f41fcdbed88 < efa96a22613b86e05cd81229ce0be411c1a4a79a ce0aa5dd20e44372f9617dd67c984f41fcdbed88 < 9a77a7639dfdc3eca417cd37620ce64da79c80c4 ce0aa5dd20e44372f9617dd67c984f41fcdbed88 < b4d05032e9af7137eab8f3af2855073f896ca843 ce0aa5dd20e44372f9617dd67c984f41fcdbed88 < f7c67c97b37c11f2a95c204092fb8159f2779e8f ce0aa5dd20e44372f9617dd67c984f41fcdbed88 < 4dad7e870c7e5178f71b5e1e4f67934b9e8cc207 ce0aa5dd20e44372f9617dd67c984f41fcdbed88 < ffa0aa5b625fe0bed7463ac613f8b06676ff4542
Linux / Linux
2.6.36
References
git.kernel.org: https://git.kernel.org/stable/c/c1a276a731d02cbb728d0530f327a68728f2d8b0 git.kernel.org: https://git.kernel.org/stable/c/24fbed0a2a45f5f379ef2b53bd2abe58be1142ad git.kernel.org: https://git.kernel.org/stable/c/efa96a22613b86e05cd81229ce0be411c1a4a79a git.kernel.org: https://git.kernel.org/stable/c/9a77a7639dfdc3eca417cd37620ce64da79c80c4 git.kernel.org: https://git.kernel.org/stable/c/b4d05032e9af7137eab8f3af2855073f896ca843 git.kernel.org: https://git.kernel.org/stable/c/f7c67c97b37c11f2a95c204092fb8159f2779e8f git.kernel.org: https://git.kernel.org/stable/c/4dad7e870c7e5178f71b5e1e4f67934b9e8cc207 git.kernel.org: https://git.kernel.org/stable/c/ffa0aa5b625fe0bed7463ac613f8b06676ff4542