CVE-2022-50575

published 2025-10-22

CVE-2022-50575: 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…

Priority P4 20 low 3.3

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.

Affected

19 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.1.4-1 (bookworm)	linux 6.1.4-1 (bookworm)
linux	linux	—	—
linux	linux	>= 3ad0876554cafa368f574d4d408468510543e9ff < 5d68ae32d132ea2af73bc223fd64c46f85302a8b	5d68ae32d132ea2af73bc223fd64c46f85302a8b
linux	linux	>= 3ad0876554cafa368f574d4d408468510543e9ff < 4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5	4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5
linux	linux	>= 3ad0876554cafa368f574d4d408468510543e9ff < 46026bb057c35f5bb111bf95e00cd8366d2e34d4	46026bb057c35f5bb111bf95e00cd8366d2e34d4
linux	linux	>= 3ad0876554cafa368f574d4d408468510543e9ff < 0bf874183b32eae2cc20e3c5be38ec3d33e7e564	0bf874183b32eae2cc20e3c5be38ec3d33e7e564
linux	linux	>= 3ad0876554cafa368f574d4d408468510543e9ff < e0c5f1058ed96f2b7487560c4c4cbd768d13d065	e0c5f1058ed96f2b7487560c4c4cbd768d13d065
linux	linux	>= 3ad0876554cafa368f574d4d408468510543e9ff < 4da411086f5ab32f811a89ef804980ec106ebb65	4da411086f5ab32f811a89ef804980ec106ebb65
linux	linux	>= 3ad0876554cafa368f574d4d408468510543e9ff < 8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79	8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79
linux	linux_kernel	>= 0 < 5.10.178-1	5.10.178-1
linux	linux_kernel	>= 0 < 6.1.4-1	6.1.4-1
linux	linux_kernel	>= 0 < 6.1.4-1	6.1.4-1
linux	linux_kernel	>= 0 < 6.1.4-1	6.1.4-1
linux	linux_kernel	>= 4.18.0 < 4.19.270	4.19.270
linux	linux_kernel	>= 4.20.0 < 5.4.229	5.4.229
linux	linux_kernel	>= 5.11.0 < 5.15.86	5.15.86
linux	linux_kernel	>= 5.16.0 < 6.0.16	6.0.16
linux	linux_kernel	>= 5.5.0 < 5.10.163	5.10.163
linux	linux_kernel	>= 6.1.0 < 6.1.2	6.1.2

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