{"id":"CVE-2026-90341","published":"2026-09-17T17:17:32.740","lastModified":"2026-09-18T18:17:54.583","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: coreboot: Validate table bounds\n\nThe existing coreboot_table_populate() bounds checks limit individual\nentries to the mapped length.  However, coreboot_table_probe() replaces\nthe platform resource length with header and table sizes supplied by\nfirmware before mapping the full table.\n\nA malformed table can overflow the 32-bit size addition or advertise an\nextent beyond the resource, causing the driver to map and parse memory\noutside the resource.  A resource shorter than the fixed header is also\nmapped as though it contained a complete header.\n\nReject resources shorter than the fixed header.  After validating the\nsignature, require a complete header, calculate the advertised extent\nwith overflow checking, and reject extents beyond the resource before\nremapping the table.","cvssScore":7.7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/2d98a3b89394f283f054a4a54587c14ee89acaf9","tags":[]},{"url":"https://git.kernel.org/stable/c/3cca0d6dd4c2636d2514234233cb02db76621607","tags":[]},{"url":"https://git.kernel.org/stable/c/88027241c1d2c3213bac937a1c2cb89a5775a413","tags":[]},{"url":"https://git.kernel.org/stable/c/a58a57a1076f8c5dae0327e3710899478c3be901","tags":[]},{"url":"https://git.kernel.org/stable/c/d848fac90c6f0566e7b93066b0b86024f65f395e","tags":[]},{"url":"https://git.kernel.org/stable/c/e82f260a74dea8cdd7857f2cc66f73d0da522bb3","tags":[]},{"url":"https://git.kernel.org/stable/c/f79f621215a0944c4a0e1b3b86b99e433ae8c527","tags":[]},{"url":"https://git.kernel.org/stable/c/fd93859ecfa5b6495a6863c18fd923a7666def26","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}