CVE-2022-49975

Advisory lineage Upstream: 0 Downstream: 5
Analyzed
Published: 18 Jun 2025, 11:00
Last modified:11 May 2026, 19:10

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.1% LOW
0% probability +0.07%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Jun 2025, 11:00
Published
Vulnerability first disclosed
11 May 2026, 19:10
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.10%• Percentile: 26%

Affected Systems

  • linux•linux

    ≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < 8b68e53d56697a59b5c53893b53f508bbdf272a0 | ≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < 6204bf78b2a903b96ba43afff6abc0b04d6e0462 | ≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < a75987714bd2d8e59840667a28e15c1fa5c47554 | ≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < 72f2dc8993f10262092745a88cb2dd0fef094f23 | ≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < fd1894224407c484f652ad456e1ce423e89bb3eb | 4.9

  • linux•linux_kernel

    < 5.4.212 | ≥ 5.5, < 5.10.141 | ≥ 5.11, < 5.15.65 | ≥ 5.16, < 5.19.7

References (5)