CVE-2026-43178 procfs: fix possible double mmput() in do_procmap_query()

🗓️ 06 May 2026 11:27:51Reported by GoogleType

osv🔗 osv.dev👁 3 Views

CVE-2026-43178 fixes double mmput in do_procmap_query when PROCMAP_QUERY buffer is too small, avoiding -ENAMETOOLONG.

Reporter	Title	Published	Views	Family All 20
ATTACKERKB	CVE-2026-43178	6 May 202611:27	–	attackerkb
Tenable Nessus	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1543)	7 Apr 202600:00	–	nessus
Tenable Nessus	Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50293)	4 Jun 202600:00	–	nessus
Tenable Nessus	Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50372)	6 Jul 202600:00	–	nessus
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-43178	7 May 202600:00	–	nessus
AstraLinux	Astra Linux – Vulnerability in Linux 6.12	24 Jun 202615:11	–	astralinux
CNNVD	Linux kernel 安全漏洞	6 May 202600:00	–	cnnvd
CVE	CVE-2026-43178	6 May 202611:27	–	cve
Cvelist	CVE-2026-43178 procfs: fix possible double mmput() in do_procmap_query()	6 May 202611:27	–	cvelist
Debian CVE	CVE-2026-43178	6 May 202611:27	–	debiancve

Source	Link
git	www.git.kernel.org/stable/c/61dc9f776705d6db6847c101b98fa4f0e9eb6fa3
git	www.git.kernel.org/stable/c/8adaff87db143583e08eec4f4e7788f1ef8af94d
git	www.git.kernel.org/stable/c/90f5e87c9b75833b9ef3a4415b92c0247f28ab2f
git	www.git.kernel.org/stable/c/f9fe092084cd04deea18747f58a2304026e76aaa
security	www.security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43178.json
access	www.access.redhat.com/security/cve/CVE-2026-43178
github	www.github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43178.json
nvd	www.nvd.nist.gov/vuln/detail/CVE-2026-43178
bugzilla	www.bugzilla.redhat.com/show_bug.cgi
git	www.git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

15 Jul 2026 01:49Current

6.6Medium risk

Vulners AI Score6.6

CVSS 3.17.8

EPSS0.00132