CVE-2022-49975

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't redirect packets with invalid pkt_len Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs, that is, the flow->head is null. The root cause, as the [2] says, is because that bpf_prog_test_run_skb() run a bpf prog which redirects empty skbs. So we should determine whether the length of the packet modified by bpf prog or others like bpf_prog_test is valid before forwarding it directly.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/6204bf78b2a903b96ba43afff6abc0b04d6e0462	Patch
https://git.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23	Patch
https://git.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0	Patch
https://git.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554	Patch
https://git.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb	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::::::::

History

No history.

Information

Published : 2025-06-18 11:15

Updated : 2025-11-13 21:28

NVD link : CVE-2022-49975

Mitre link : CVE-2022-49975

CVE.ORG link : CVE-2022-49975

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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