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CVE-2022-50285— mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages

EPSS 0.02% · P4

Affected Version Matrix 19

VendorProductVersion RangeStatus
LinuxLinuxa88c769548047b21f76fd71e04b6a3300ff17160< 3e50a07b6a5fcd39df1534d3fdaca4292a65efe6affected
a88c769548047b21f76fd71e04b6a3300ff17160< 629c986e19fe9481227c7cdfd9a105bbc104d245affected
a88c769548047b21f76fd71e04b6a3300ff17160< 2b35432d324898ec41beb27031d2a1a864a4d40eaffected
a88c769548047b21f76fd71e04b6a3300ff17160< 11993652d0b49e27272db0a37aa828d8a3a4b92baffected
a88c769548047b21f76fd71e04b6a3300ff17160< 568e3812b1778b4c0c229649b59977d88f400eceaffected
a88c769548047b21f76fd71e04b6a3300ff17160< 112a005d1ded04a4b41b6d01833cc0bda90625ccaffected
a88c769548047b21f76fd71e04b6a3300ff17160< c828fab903725279aa9dc6ae3d44bb7e4778f92caffected
a88c769548047b21f76fd71e04b6a3300ff17160< 12df140f0bdfae5dcfc81800970dd7f6f632e00caffected
… +11 more rows
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I. Basic Information for CVE-2022-50285

Vulnerability Information
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Vulnerability Title
mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未在减少h->resv_huge_pages前获取hugetlb_lock锁，可能导致计数器值损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux a88c769548047b21f76fd71e04b6a3300ff17160 ~ 3e50a07b6a5fcd39df1534d3fdaca4292a65efe6 -
LinuxLinux 4.4 -

II. Public POCs for CVE-2022-50285

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III. Intelligence Information for CVE-2022-50285

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Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50293btrfs: do not BUG_ON() on ENOMEM when dropping extent items for a range
CVE-2023-53232mt76: mt7921: fix kernel panic by accessing unallocated eeprom.data
CVE-2023-53233net/smc: fix deadlock triggered by cancel_delayed_work_syn()
CVE-2023-53234watchdog: Fix kmemleak in watchdog_cdev_register
CVE-2023-53235drm/tests: helpers: Avoid a driver uaf
CVE-2023-53236iommufd: Do not corrupt the pfn list when doing batch carry
CVE-2023-53237drm/amdgpu: fix amdgpu_irq_put call trace in gmc_v11_0_hw_fini
CVE-2023-53238phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe()
CVE-2023-53239drm/msm/mdp5: Add check for kzalloc
CVE-2023-53240xsk: check IFF_UP earlier in Tx path
CVE-2023-53241nfsd: call op_release, even when op_func returns an error
CVE-2023-53242thermal/drivers/hisi: Drop second sensor hi3660
CVE-2022-50291kcm: annotate data-races around kcm->rx_psock
CVE-2022-50292drm/msm/dp: fix bridge lifetime
CVE-2022-50303drm/amdkfd: Fix double release compute pasid
CVE-2022-50300btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
CVE-2022-50301iommu/omap: Fix buffer overflow in debugfs
CVE-2022-50302lockd: set other missing fields when unlocking files
CVE-2022-50299md: Replace snprintf with scnprintf
CVE-2022-50304mtd: core: fix possible resource leak in init_mtd()

Showing top 20 of 210 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50285

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