Improper input validation in Linux kernel - CVE-2026-53245
Published: June 26, 2026
Vulnerability identifier: #VU135507
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-53245
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in mrp_pdu_parse_vecattr when parsing crafted MRP vector attributes in protocol data units. A remote attacker can send a specially crafted MRP packet to cause a denial of service.
The issue can be triggered when a VectorAttribute uses a zero-length value set or event counts that cross byte boundaries.
How to mitigate CVE-2026-53245
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/36d259711872e3b2f6cd76a4d270c21931c0f35f
- https://git.kernel.org/stable/c/42446ca0f3570663e87183c065e0b4def52dfba2
- https://git.kernel.org/stable/c/6d6e42e8e17f18d61327f8653479c5b5e161ae1d
- https://git.kernel.org/stable/c/6eea6494e542a03cdf755a593b7d74f3f7c260fd
- https://git.kernel.org/stable/c/7561c7fbc694308da73300f036719e63e42bf0b4
- https://git.kernel.org/stable/c/ae65714d96f68bb252eb20085320bdaacab36c00
- https://git.kernel.org/stable/c/cc98717e591a963a616fdf15ecf48eefaf45d758
- https://git.kernel.org/stable/c/fd9c3a47c670bec6b18f44454cea023f93b5adb3