CVE - CVE-2022-49975

CVE-ID
CVE-2022-49975	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/6204bf78b2a903b96ba43afff6abc0b04d6e0462 URL:https://git.kernel.org/stable/c/6204bf78b2a903b96ba43afff6abc0b04d6e0462 MISC:https://git.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23 URL:https://git.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23 MISC:https://git.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0 URL:https://git.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0 MISC:https://git.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554 URL:https://git.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554 MISC:https://git.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb URL:https://git.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb
Assigning CNA
kernel.org
Date Record Created
20250618	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250618)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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