CVE-2022-49975

HIGH EPSS 11.9%
Published Jun 18, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
11.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel* <5.4.212
linuxlinux_kernel*≥5.5  –  <5.10.141
linuxlinux_kernel*≥5.11  –  <5.15.65
linuxlinux_kernel*≥5.16  –  <5.19.7

References 5

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

Remediation

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