7.8

CVE-2022-50048: netfilter: nf_tables: possible module reference underflow in error path

Modified
AliasesUBUNTU-CVE-2022-50048DEBIAN-CVE-2022-50048
Published 18-06-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-50048 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10.1% 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 (CVE.org)
EPSS score
0.20%
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
RHSA-2022:8267RHSA-2023:2951RHSA-2024:3421

Timeline

  1. 18-06-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: possible module reference underflow in error path dst->ops is set on when nft_expr_clone() fails, but module refcount has not been bumped yet, therefore nft_expr_destroy() leads to module reference underflow.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.20% 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.

Ubuntu94 products
  • linux< 5.15.0-53.59
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1023.27
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 8cfd9b0f8515e7c361bba27e2a2684cbd427fe01, < b59bee8b05b0e789b5a298cacb09e8aaa3367a29 | ≥ 8cfd9b0f8515e7c361bba27e2a2684cbd427fe01, < 1e52e6cfec6342c3d0df47dc3a76724fb3dabf56 | ≥ 8cfd9b0f8515e7c361bba27e2a2684cbd427fe01, < c485c35ff6783ccd12c160fcac6a0e504e83e0bf | 5.11
  • linux_kernel≥ 5.11, < 5.15.63 | ≥ 5.16, < 5.19.4 | 6.0:rc1
Debian1 product
  • linux< 6.0.2-1

3 vendors · 97 products

References

6 links