CVE-2026-31780 wifi: wilc1000: fix u8 overflow in SSID scan buffer size calculation

🗓️ 01 May 2026 14:15:07Reported by GoogleType

osv

osv🔗 osv.dev👁 3 Views

Linux kernel wifi wilc1000 fix: widen valuesize from u8 to u32 to prevent SSID scan buffer overflow.

Reporter	Title	Published	Views	Family All 34
circl	CVE-2026-31780	5 May 202620:00	–	circl
cnnvd	Linux kernel 安全漏洞	1 May 202600:00	–	cnnvd
cnvd	Linux Kernel wilc1000 Integer Overflow Vulnerability	9 May 202600:00	–	cnvd
cve	CVE-2026-31780	1 May 202614:15	–	cve
cvelist	CVE-2026-31780 wifi: wilc1000: fix u8 overflow in SSID scan buffer size calculation	1 May 202614:15	–	cvelist
debian	[SECURITY] [DLA 4561-1] linux-6.1 security update	2 May 202608:40	–	debian
debian	[SECURITY] [DLA 4606-1] linux security update	29 May 202616:36	–	debian
debian	[SECURITY] [DSA 6243-1] linux security update	1 May 202619:10	–	debian
debiancve	CVE-2026-31780	1 May 202614:15	–	debiancve
nessus	Debian dla-4561 : linux-config-6.1 - security update	2 May 202600:00	–	nessus

Source	Link
git	www.git.kernel.org/stable/c/0c7f21d8bd2f93998b72b7a7f93152336aeca4dd
git	www.git.kernel.org/stable/c/34a23fd9ddd683a03c7e8cc0ceded3e59e354b99
git	www.git.kernel.org/stable/c/549f02d8ec94d39092ab6d9b103d0d6783a4b024
git	www.git.kernel.org/stable/c/9907ac9b9a18b92fc34b9e4cb9e10f208dc1d3f7
git	www.git.kernel.org/stable/c/bfbddeadd4779651403035ee177ae2f22f9f5521
git	www.git.kernel.org/stable/c/c97b2a00059608592ad0d86fbb813a4f8cf9464b
git	www.git.kernel.org/stable/c/d049e56b1739101d1c4d81deedb269c52a8dbba0
git	www.git.kernel.org/stable/c/d8388614de613c28eeb659c10115060a83739924
github	www.github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31780.json
nvd	www.nvd.nist.gov/vuln/detail/CVE-2026-31780

15 Jul 2026 01:49Current

5.9Medium risk

Vulners AI Score5.9

CVSS 3.17.8

EPSS0.00143

linux kernel wifi wilc1000 valuesize type ssid scan buffer overflow