CVE-2026-31575 mm/userfaultfd: fix hugetlb fault mutex hash calculation

🗓️ 24 Apr 2026 14:42:07Reported by GoogleType

osv🔗 osv.dev👁 1 Views

Linux kernel fixes hugetlb fault mutex hash calculation by using huge page indices via hugetlb_linear_page_index() and replacing linear_page_index(), preventing races.

Reporter	Title	Published	Views	Family All 56
ATTACKERKB	CVE-2026-31575	24 Apr 202614:42	–	attackerkb
Tenable Nessus	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1693)	9 May 202600:00	–	nessus
Tenable Nessus	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1816)	8 Jun 202600:00	–	nessus
Tenable Nessus	Debian dsa-6238 : ata-modules-6.12.74+deb13+1-armmp-di - security update	30 Apr 202600:00	–	nessus
Tenable Nessus	openSUSE 16 Security Update : kernel (openSUSE-SU-2026:20912-1)	11 Jun 202600:00	–	nessus
Tenable Nessus	Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50372)	6 Jul 202600:00	–	nessus
Tenable Nessus	Photon OS 5.0: Linux PHSA-2026-5.0-0849	3 Jun 202600:00	–	nessus
Tenable Nessus	Ubuntu 26.04 LTS : Linux kernel vulnerabilities (USN-8488-1)	3 Jul 202600:00	–	nessus
Tenable Nessus	Ubuntu 26.04 LTS : Linux kernel (NVIDIA) vulnerabilities (USN-8507-1)	7 Jul 202600:00	–	nessus
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-31575	24 Apr 202600:00	–	nessus

Source	Link
git	www.git.kernel.org/stable/c/0217c7fb4de4a40cee667eb21901f3204effe5ac
git	www.git.kernel.org/stable/c/08282b1bf74c69fc8ecd25493e7fdb5460f01290
git	www.git.kernel.org/stable/c/574501ede47ac439afd67ba9812bc66722d500ba
git	www.git.kernel.org/stable/c/5a525c43baaba0bf3063f86996ca3623b71e4172
git	www.git.kernel.org/stable/c/f4689fc089765d36c026063fb22d23533e883eb6
github	www.github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31575.json
nvd	www.nvd.nist.gov/vuln/detail/CVE-2026-31575
git	www.git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

15 Jul 2026 01:49Current

6.1Medium risk

Vulners AI Score6.1

CVSS 3.15.5

EPSS0.00122