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CVE-2022-50575— xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于未限制用户控制的内存分配大小，可能导致拒绝服务攻击。

AI Predicted 3.7 Difficulty: Trivial EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 3ad0876554cafa368f574d4d408468510543e9ff< 5d68ae32d132ea2af73bc223fd64c46f85302a8b affected
3ad0876554cafa368f574d4d408468510543e9ff< 4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5 affected
3ad0876554cafa368f574d4d408468510543e9ff< 46026bb057c35f5bb111bf95e00cd8366d2e34d4 affected
3ad0876554cafa368f574d4d408468510543e9ff< 0bf874183b32eae2cc20e3c5be38ec3d33e7e564 affected
3ad0876554cafa368f574d4d408468510543e9ff< e0c5f1058ed96f2b7487560c4c4cbd768d13d065 affected
3ad0876554cafa368f574d4d408468510543e9ff< 4da411086f5ab32f811a89ef804980ec106ebb65 affected
3ad0876554cafa368f574d4d408468510543e9ff< 8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79 affected
4.18 affected
… +8 more rows
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I. Basic Information for CVE-2022-50575

Vulnerability Information
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Vulnerability Title
xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource() As 'kdata.num' is user-controlled data, if user tries to allocate memory larger than(>=) MAX_ORDER, then kcalloc() will fail, it creates a stack trace and messes up dmesg with a warning. Call trace: -> privcmd_ioctl --> privcmd_ioctl_mmap_resource Add __GFP_NOWARN in order to avoid too large allocation warning. This is detected by static analysis using smatch.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于未限制用户控制的内存分配大小，可能导致拒绝服务攻击。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 3ad0876554cafa368f574d4d408468510543e9ff ~ 5d68ae32d132ea2af73bc223fd64c46f85302a8b -
Linux Linux 4.18 -

II. Public POCs for CVE-2022-50575

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III. Intelligence Information for CVE-2022-50575

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Patches & Fixes for CVE-2022-50575 (7)

Same Patch Batch · Linux · 2025-10-22 · 67 CVEs total

CVE-2023-53711 8.2 HIGH NFS: Fix a potential data corruption
CVE-2023-53705 8.2 HIGH ipv6: Fix out-of-bounds access in ipv6_find_tlv()
CVE-2023-53698 7.8 HIGH xsk: fix refcount underflow in error path
CVE-2023-53692 7.8 HIGH ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline
CVE-2022-50569 7.8 HIGH xfrm: Update ipcomp_scratches with NULL when freed
CVE-2022-50570 7.8 HIGH platform/chrome: fix memory corruption in ioctl
CVE-2022-50567 7.8 HIGH fs: jfs: fix shift-out-of-bounds in dbAllocAG
CVE-2023-53718 7.8 HIGH ring-buffer: Do not swap cpu_buffer during resize process
CVE-2023-53695 7.8 HIGH udf: Detect system inodes linked into directory hierarchy
CVE-2023-53707 7.8 HIGH drm/amdgpu: Fix integer overflow in amdgpu_cs_pass1
CVE-2022-50581 7.8 HIGH hfs: fix OOB Read in __hfs_brec_find
CVE-2023-53729 7.8 HIGH soc: qcom: qmi_encdec: Restrict string length in decode
CVE-2023-53713 7.8 HIGH arm64: sme: Use STR P to clear FFR context field in streaming SVE mode
CVE-2023-53726 7.1 HIGH arm64: csum: Fix OoB access in IP checksum code for negative lengths
CVE-2023-53704 clk: imx: clk-imx8mp: improve error handling in imx8mp_clocks_probe()
CVE-2023-53706 mm/vmemmap/devdax: fix kernel crash when probing devdax devices
CVE-2023-53710 wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read
CVE-2023-53708 ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects
CVE-2023-53712 ARM: 9317/1: kexec: Make smp stop calls asynchronous
CVE-2023-53714 drm/stm: ltdc: fix late dereference check

Showing top 20 of 67 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50575

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