CVE-2026-17523

High

A flaw was found in the Linux kernel in net/can/bcm.c in can: bcm, where an unprivileged local user can exploit this vulnerability to execute arbitrary code within the kernel, which leads to a local privilege escalation (LPE). This allows the attacker to gain root privileges and take full control of the affected system.

Package Linux Kernel
Published 2026-07-27
Last modified 2026-07-29
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

7.8

out of 10
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-825

CVE-2026-17523 is classified as CWE-825

See CWE-825 on MITRE CWE for full details on this weakness type.

References

3 total

Frequently asked questions

  • What is CVE-2026-17523?

    CVE-2026-17523 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2026-17523 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2026-17523?

    CVE-2026-17523 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2026-17523?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2026-17523 patch availability.

  • Is CVE-2026-17523 actively exploited?

    No. CVE-2026-17523 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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