5.5

CVE-2022-50391: mm/mempolicy: fix memory leak in set_mempolicy_home_node system call

Modified
AliasesUBUNTU-CVE-2022-50391DEBIAN-CVE-2022-50391
Published 18-09-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50391 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.8% 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 (CVE.org)
EPSS score
0.16%
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 4
RHSA-2023:6583SUSE-SU-2025:03615-1SUSE-SU-2025:03628-1SUSE-SU-2025:3716-1SUSE-SU-2025:3761-1

Timeline

  1. 18-09-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: fix memory leak in set_mempolicy_home_node system call When encountering any vma in the range with policy other than MPOL_BIND or MPOL_PREFERRED_MANY, an error is returned without issuing a mpol_put on the policy just allocated with mpol_dup(). This allows arbitrary users to leak kernel memory.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.15% 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.

Ubuntu84 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≥ c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0, < 4ca0eb6b2f3add8c5daefb726ce57dc95d103d33 | ≥ c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0, < 0ce4cc6d269ddc448a825955b495f662f5d9e153 | ≥ c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0, < 38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76 | 5.17
  • linux_kernel≥ 5.17, < 6.0.17 | ≥ 6.1, < 6.1.3
Debian1 product
  • linux< 6.1.4-1

3 vendors · 87 products

References

7 links