7.5

CVE-2022-48748: net: bridge: vlan: fix memory leak in __allowed_ingress

Analyzed
AliasesUBUNTU-CVE-2022-48748DEBIAN-CVE-2022-48748
Published 20-06-2024Last modified 11-05-2026

Vulnerability summary

CVE-2022-48748 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in linux. EPSS estimates a 1.13% chance of exploitation in the next 30 days, higher than 66.3% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.13%
0%100%
Low · 0.00 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 5 · Related 5
SUSE-SU-2024:2362-1SUSE-SU-2024:2372-1SUSE-SU-2024:2384-1SUSE-SU-2024:2394-1SUSE-SU-2024:2939-1

Timeline

  1. 20-06-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: bridge: vlan: fix memory leak in __allowed_ingress When using per-vlan state, if vlan snooping and stats are disabled, untagged or priority-tagged ingress frame will go to check pvid state. If the port state is forwarding and the pvid state is not learning/forwarding, untagged or priority-tagged frame will be dropped but skb memory is not freed. Should free skb when __allowed_ingress returns false.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

1.13%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.13% 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

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu62 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ a580c76d534c7360ba68042b19cb255e8420e987, < 446ff1fc37c74093e81db40811a07b5a19f1d797 | ≥ a580c76d534c7360ba68042b19cb255e8420e987, < c5e216e880fa6f2cd9d4a6541269377657163098 | ≥ a580c76d534c7360ba68042b19cb255e8420e987, < 14be8d448fca6fe7b2a413831eedd55aef6c6511 | ≥ a580c76d534c7360ba68042b19cb255e8420e987, < fd20d9738395cf8e27d0a17eba34169699fccdff | 5.6
  • linux_kernel≥ 5.6, < 5.10.96 | ≥ 5.11, < 5.15.19 | ≥ 5.16, < 5.16.5 | 5.17:rc1
Debian1 product
  • linux< 5.16.7-1

3 vendors · 65 products

References

8 links