5.5

CVE-2022-48642: netfilter: nf_tables: fix percpu memory leak at nf_tables_addchain()

Analyzed
AliasesUBUNTU-CVE-2022-48642DEBIAN-CVE-2022-48642
Published 28-04-2024Last modified 11-05-2026

Vulnerability summary

CVE-2022-48642 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 14.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.23%
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 3 · Related 3
SUSE-SU-2024:1644-1SUSE-SU-2024:1659-1SUSE-SU-2024:1663-1

Timeline

  1. 28-04-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix percpu memory leak at nf_tables_addchain() It seems to me that percpu memory for chain stats started leaking since commit 3bc158f8d0330f0a ("netfilter: nf_tables: map basechain priority to hardware priority") when nft_chain_offload_priority() returned an error.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.23% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu98 products
  • linuxAll versions (No fix recorded) | < 5.15.0-57.63
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1027.31
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 3bc158f8d0330f0ac58597c023acca2234c14616, < b043a525a3f5520abb676a7cd8f6328fdf959e88 | ≥ 3bc158f8d0330f0ac58597c023acca2234c14616, < 08d7524f366a886b99b1630a24a27dd6e0d7f852 | ≥ 3bc158f8d0330f0ac58597c023acca2234c14616, < 985b031667c3177b9e7fb9787b989628e4271714 | ≥ 3bc158f8d0330f0ac58597c023acca2234c14616, < 9a4d6dd554b86e65581ef6b6638a39ae079b17ac | 5.3
  • linux_kernel≥ 5.3, < 5.10.146 | ≥ 5.11, < 5.15.71 | ≥ 5.16, < 5.19.12 | 6.0:rc1 | 6.0:rc2 | 6.0:rc3 | 6.0:rc4 | 6.0:rc5 | 6.0:rc6
Debian1 product
  • linux< 6.0.2-1

3 vendors · 101 products

References

8 links