In the Linux kernel, the following vulnerability has been resolved: mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages The h->*_huge_pages counters are protected by the hugetlb_lock, but alloc_huge_page has a corner case where it can decrement the counter outside of the lock. This could lead to a corrupted value of h->resv_huge_pages, which we have observed on our systems. Take the hugetlb_lock before decrementing h->resv_huge_pages to avoid a potential race.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625cc cve-icon cve-icon
https://git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92b cve-icon cve-icon
https://git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00c cve-icon cve-icon
https://git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40e cve-icon cve-icon
https://git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6 cve-icon cve-icon
https://git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ece cve-icon cve-icon
https://git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245 cve-icon cve-icon
https://git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92c cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025091507-CVE-2022-50285-955c@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50285 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50285 cve-icon
History

Wed, 17 Sep 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Tue, 16 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Mon, 15 Sep 2025 14:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages The h->*_huge_pages counters are protected by the hugetlb_lock, but alloc_huge_page has a corner case where it can decrement the counter outside of the lock. This could lead to a corrupted value of h->resv_huge_pages, which we have observed on our systems. Take the hugetlb_lock before decrementing h->resv_huge_pages to avoid a potential race.
Title mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-15T14:21:21.504Z

Updated: 2025-09-15T14:21:21.504Z

Reserved: 2025-09-15T13:58:00.977Z

Link: CVE-2022-50285

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-15T15:15:39.660

Modified: 2025-09-15T15:22:27.090

Link: CVE-2022-50285

cve-icon Redhat

Severity : Low

Publid Date: 2025-09-15T00:00:00Z

Links: CVE-2022-50285 - Bugzilla