Linux Kernel up to 7.2.5 coreboot coreboot_table_probe memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.5$5k-$25k0.40+

Summaryinfo

A vulnerability marked as very critical has been reported in Linux Kernel up to 7.2.5. Affected by this vulnerability is the function coreboot_table_probe of the component coreboot. This manipulation causes memory corruption. The identification of this vulnerability is CVE-2026-90341. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.5. It has been declared as very critical. Affected by this vulnerability is the function coreboot_table_probe of the component coreboot. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-90341 since 09/11/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/17/2026).

Upgrading to version 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch 3cca0d6dd4c2636d2514234233cb02db76621607/f79f621215a0944c4a0e1b3b86b99e433ae8c527/d848fac90c6f0566e7b93066b0b86024f65f395e/88027241c1d2c3213bac937a1c2cb89a5775a413/fd93859ecfa5b6495a6863c18fd923a7666def26/2d98a3b89394f283f054a4a54587c14ee89acaf9/e82f260a74dea8cdd7857f2cc66f73d0da522bb3/a58a57a1076f8c5dae0327e3710899478c3be901 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: 3cca0d6dd4c2636d2514234233cb02db76621607/f79f621215a0944c4a0e1b3b86b99e433ae8c527/d848fac90c6f0566e7b93066b0b86024f65f395e/88027241c1d2c3213bac937a1c2cb89a5775a413/fd93859ecfa5b6495a6863c18fd923a7666def26/2d98a3b89394f283f054a4a54587c14ee89acaf9/e82f260a74dea8cdd7857f2cc66f73d0da522bb3/a58a57a1076f8c5dae0327e3710899478c3be901

Timelineinfo

09/11/2026 CVE reserved
09/17/2026 +6 days Advisory disclosed
09/17/2026 +0 days VulDB entry created
09/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-90341 (🔒)
GCVE (CVE): GCVE-0-2026-90341
GCVE (VulDB): GCVE-100-406879

Entryinfo

Created: 09/17/2026 21:43
Changes: 09/17/2026 21:43 (59)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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