CVE-2022-50285None▾ SunlitIn 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 c…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= a88c769548047b21f76fd71e04b6a3300ff17160 < 3e50a07b6a5fcd39df1534d3fdaca4292a65efe6Linux >= a88c769548047b21f76fd71e04b6a3300ff17160 < 629c986e19fe9481227c7cdfd9a105bbc104d245Linux >= a88c769548047b21f76fd71e04b6a3300ff17160 < 2b35432d324898ec41beb27031d2a1a864a4d40eLinux >= a88c769548047b21f76fd71e04b6a3300ff17160 < 11993652d0b49e27272db0a37aa828d8a3a4b92bLinux >= a88c769548047b21f76fd71e04b6a3300ff17160 < 568e3812b1778b4c0c229649b59977d88f400eceLinux >= a88c769548047b21f76fd71e04b6a3300ff17160 < 112a005d1ded04a4b41b6d01833cc0bda90625ccLinux >= a88c769548047b21f76fd71e04b6a3300ff17160 < c828fab903725279aa9dc6ae3d44bb7e4778f92cLinux >= a88c769548047b21f76fd71e04b6a3300ff17160 < 12df140f0bdfae5dcfc81800970dd7f6f632e00cLinux 3f5fae4d1a3189d95b02b4b45e1218df147122bcLinux >= 4.3.6 < 4.4Linux 4.4Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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