CVE-2022-50285
Full vulnerability record from the local CVENow database.
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.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-15 15:15:39.660000
Last modified
2026-11-05 20:17:32.560000
View original CVE JSON
{
"id": "CVE-2022-50285",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-15T15:15:39.660",
"lastModified": "2026-11-05T20:17:32.560",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages\n\nThe h->*_huge_pages counters are protected by the hugetlb_lock, but\nalloc_huge_page has a corner case where it can decrement the counter\noutside of the lock.\n\nThis could lead to a corrupted value of h->resv_huge_pages, which we have\nobserved on our systems.\n\nTake the hugetlb_lock before decrementing h->resv_huge_pages to avoid a\npotential race."
}
],
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