Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2022-50285

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/09/2025
Last modified:
04/12/2025

Description

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

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.3.6 (including) 4.4 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.4.1 (including) 4.9.332 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.10 (including) 4.14.298 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.15 (including) 4.19.264 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.20 (including) 5.4.223 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5 (including) 5.10.153 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.76 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 6.0.6 (excluding)
cpe:2.3:o:linux:linux_kernel:4.4:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.4:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.4:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.4:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.4:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools