CVE-2022-48714

In the Linux kernel, the following vulnerability has been resolved: bpf: Use VM_MAP instead of VM_ALLOC for ringbuf After commit 2fd3fb0be1d1 ("kasan, vmalloc: unpoison VM_ALLOC pages after mapping"), non-VM_ALLOC mappings will be marked as accessible in __get_vm_area_node() when KASAN is enabled. But now the flag for ringbuf area is VM_ALLOC, so KASAN will complain out-of-bound access after vmap() returns. Because the ringbuf area is created by mapping allocated pages, so use VM_MAP instead. After the change, info in /proc/vmallocinfo also changes from [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmalloc user to [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmap user

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/5e457aeab52a5947619e1f18047f4d2f3212b3eb	Patch
https://git.kernel.org/stable/c/6304a613a97d6dcd49b93fbad31e9f39d1e138d6	Patch
https://git.kernel.org/stable/c/b293dcc473d22a62dc6d78de2b15e4f49515db56	Patch
https://git.kernel.org/stable/c/d578933f6226d5419af9306746efa1c693cbaf9c	Patch
https://git.kernel.org/stable/c/5e457aeab52a5947619e1f18047f4d2f3212b3eb	Patch
https://git.kernel.org/stable/c/6304a613a97d6dcd49b93fbad31e9f39d1e138d6	Patch
https://git.kernel.org/stable/c/b293dcc473d22a62dc6d78de2b15e4f49515db56	Patch
https://git.kernel.org/stable/c/d578933f6226d5419af9306746efa1c693cbaf9c	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.17:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.17:rc2::::::

History

No history.

Information

Published : 2024-06-20 11:15

Updated : 2025-09-17 17:12

NVD link : CVE-2022-48714

Mitre link : CVE-2022-48714

CVE.ORG link : CVE-2022-48714

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-125

Out-of-bounds Read

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