CVE-2026-64402 coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer()

🗓️ 25 Jul 2026 08:50:45Reported by GoogleType

osv

osv🔗 osv.dev👁 2 Views

Fix OOB write in coresight ultrasoc-smb by normalizing head modulo AUX buffer size.

Reporter	Title	Published	Views	Family All 9
CVE	CVE-2026-64402	25 Jul 202608:50	–	cve
Cvelist	CVE-2026-64402 coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer()	25 Jul 202608:50	–	cvelist
Debian CVE	CVE-2026-64402	25 Jul 202608:50	–	debiancve
EUVD	EUVD-2026-48946	25 Jul 202608:50	–	euvd
NVD	CVE-2026-64402	25 Jul 202610:17	–	nvd
OSV	DEBIAN-CVE-2026-64402	25 Jul 202610:17	–	osv
Positive Technologies	PT-2026-64623	25 Jul 202600:00	–	ptsecurity
SUSE CVE	SUSE CVE-2026-64402	25 Jul 202616:00	–	susecve
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-64402	25 Jul 202600:00	–	nessus

Source	Link
git	www.git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
git	www.git.kernel.org/stable/c/38dbc8db8341ccdf8e1e1a067453d33ad751864b
git	www.git.kernel.org/stable/c/4c5a0a946373da99a80398289b28845b5ae40cd1
git	www.git.kernel.org/stable/c/661a019ac0413ecec9e5d1dfcc12fbca8e78d5fb
git	www.git.kernel.org/stable/c/98495b5a4d77dd22e106f462b76e1093a55b29a7
git	www.git.kernel.org/stable/c/daf6246ab988fc8bdc82ad7c8d0b1c182d11b15f
github	www.github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64402.json
nvd	www.nvd.nist.gov/vuln/detail/CVE-2026-64402

26 Jul 2026 05:17Current

5.9Medium risk

Vulners AI Score5.9

EPSS0.00209

coresight ultrasoc smb sync perf buffer out of bounds auxiliary buffer head normalization ring buffer