# CVE-2026-90341: linux: In the Linux kernel, the following vulnerability has been resolved:  firmware: coreboot: Validate table bounds  The e...

CVE-2026-90341 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-90341, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-90341
- Priority: High
- CVSS: 7.7 (high)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 17, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  firmware: coreboot: Validate table bounds  The existing coreboot_table_populate() bounds checks limit individual entries to the mapped length.  However, coreboot_table_probe() replaces the platform resource length with header and table sizes supplied by firmware before mapping the full table.  A malformed table can overflow the 32-bit size addition or advertise an extent beyond the resource, causing the driver to map and parse memory outside the resource.  A resource shorter than the fixed header is also mapped as though it contained a complete header.  Reject resources shorter than the fixed header.  After validating the signature, require a complete header, calculate the advertised extent with overflow checking, and reject extents beyond the resource before remapping the table.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.190-1 | [DEBIAN-CVE-2026-90341](https://patchblox.com/security/data/fix/linux/debian-cve-2026-90341.md) | Sep 23, 2026 |
| Linux | linux Debian 13.5 (trixie) | 6.12.111-1 | [DEBIAN-CVE-2026-90341](https://patchblox.com/security/data/fix/linux/debian-cve-2026-90341.md) | Sep 23, 2026 |
| Linux | linux Debian 14 | 7.2.6-1 | [DEBIAN-CVE-2026-90341](https://patchblox.com/security/data/fix/linux/debian-cve-2026-90341.md) | Sep 23, 2026 |
| Linux | linux-6.12 Debian 12.15 (bookworm) | 6.12.111-1~deb12u1 | [DEBIAN-CVE-2026-90341](https://patchblox.com/security/data/fix/linux/debian-cve-2026-90341.md) | Sep 23, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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