CVE-2026-64123 net: hsr: defer node table free until after RCU readers

🗓️ 19 Jul 2026 15:40:21Reported by GoogleType

osv🔗 osv.dev👁 3 Views

Linux kernel defers HSR node table freeing until after read copy update readers to prevent use after free.

Reporter	Title	Published	Views	Family All 10
ATTACKERKB	CVE-2026-64123	19 Jul 202615:40	–	attackerkb
CVE	CVE-2026-64123	19 Jul 202615:40	–	cve
Cvelist	CVE-2026-64123 net: hsr: defer node table free until after RCU readers	19 Jul 202615:40	–	cvelist
EUVD	EUVD-2026-45808	19 Jul 202615:40	–	euvd
NVD	CVE-2026-64123	19 Jul 202616:17	–	nvd
OSV	DEBIAN-CVE-2026-64123	19 Jul 202616:17	–	osv
OSV	UBUNTU-CVE-2026-64123	20 Jul 202600:00	–	osv
Positive Technologies	PT-2026-61440	19 Jul 202600:00	–	ptsecurity
RedhatCVE	CVE-2026-64123	20 Jul 202607:54	–	redhatcve
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-64123	20 Jul 202600:00	–	nessus

Source	Link
git	www.git.kernel.org/stable/c/0ea70fb46940620848c08d9d399455c9e82fecdb
git	www.git.kernel.org/stable/c/6324423a8e6591f41a16c09a8f9a84e554ac147c
git	www.git.kernel.org/stable/c/7713f4aafb577ff49fa67f0488d9c7dddc64d6ce
git	www.git.kernel.org/stable/c/8be6685cdd1255bcc85f9b59e4bfc313aefc5c1b
git	www.git.kernel.org/stable/c/8c3af18bb0d7c921a5219194037509463eb2ffde
git	www.git.kernel.org/stable/c/aaec7096f9961eb223b5b149abe9495525c205d9
git	www.git.kernel.org/stable/c/c5580114e0492bcd2e0a37613ed4c311e3fa3d4d
github	www.github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64123.json
nvd	www.nvd.nist.gov/vuln/detail/CVE-2026-64123
git	www.git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

21 Jul 2026 03:47Current

5.3Medium risk

Vulners AI Score5.3

CVSS 3.17.8

EPSS0.00172