CVE-2021-47486

In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fix potential NULL dereference The bpf_jit_binary_free() function requires a non-NULL argument. When the RISC-V BPF JIT fails to converge in NR_JIT_ITERATIONS steps, jit_data->header will be NULL, which triggers a NULL dereference. Avoid this by checking the argument, prior calling the function.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b	Patch
https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d	Patch
https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41	Patch
https://git.kernel.org/stable/c/27de809a3d83a6199664479ebb19712533d6fd9b	Patch
https://git.kernel.org/stable/c/cac6b043cea3e120f4fccec16f7381747cbfdc0d	Patch
https://git.kernel.org/stable/c/e1b80a5ebe5431caeb20f88c32d4a024777a2d41	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:5.15:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc4::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc5::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc6::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc7::::::

History

No history.

Information

Published : 2024-05-22 09:15

Updated : 2025-04-01 18:40

NVD link : CVE-2021-47486

Mitre link : CVE-2021-47486

CVE.ORG link : CVE-2021-47486

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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