CVE-2022-48770

In the Linux kernel, the following vulnerability has been resolved: bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack() task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0bcd484587b3b3092e448d27dc369e347e1810c3	Patch
https://git.kernel.org/stable/c/b82ef4985a6d05e80f604624332430351df7b79a	Patch
https://git.kernel.org/stable/c/b992f01e66150fc5e90be4a96f5eb8e634c8249e	Patch
https://git.kernel.org/stable/c/ff6bdc205fd0a83bd365405d4e31fb5905826996	Patch
https://git.kernel.org/stable/c/0bcd484587b3b3092e448d27dc369e347e1810c3	Patch
https://git.kernel.org/stable/c/b82ef4985a6d05e80f604624332430351df7b79a	Patch
https://git.kernel.org/stable/c/b992f01e66150fc5e90be4a96f5eb8e634c8249e	Patch
https://git.kernel.org/stable/c/ff6bdc205fd0a83bd365405d4e31fb5905826996	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::::::

History

No history.

Information

Published : 2024-06-20 12:15

Updated : 2025-01-06 21:43

NVD link : CVE-2022-48770

Mitre link : CVE-2022-48770

CVE.ORG link : CVE-2022-48770

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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