7.8

CVE-2022-49975: bpf: Don't redirect packets with invalid pkt_len

Analyzed
AliasesUBUNTU-CVE-2022-49975DEBIAN-CVE-2022-49975
Published 18-06-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-49975 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.27%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
SUSE-SU-2025:03204-1SUSE-SU-2025:03614-1SUSE-SU-2026:0316-1

Timeline

  1. 18-06-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability 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

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.26% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu110 products
  • linuxAll versions (No fix recorded) | < 5.4.0-132.148 | < 5.15.0-57.63
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1089.97 | < 5.15.0-1027.31
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < 8b68e53d56697a59b5c53893b53f508bbdf272a0 | ≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < 6204bf78b2a903b96ba43afff6abc0b04d6e0462 | ≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < a75987714bd2d8e59840667a28e15c1fa5c47554 | ≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < 72f2dc8993f10262092745a88cb2dd0fef094f23 | ≥ 5293efe62df81908f2e90c9820c7edcc8e61f5e9, < fd1894224407c484f652ad456e1ce423e89bb3eb | 4.9
  • linux_kernel< 5.4.212 | ≥ 5.5, < 5.10.141 | ≥ 5.11, < 5.15.65 | ≥ 5.16, < 5.19.7
Debian1 product
  • linux< 6.0.2-1

3 vendors · 113 products

References

8 links