5.5

CVE-2025-39830: net/mlx5: HWS, Fix memory leak in hws_pool_buddy_init error path

Modified
AliasesUBUNTU-CVE-2025-39830DEBIAN-CVE-2025-39830CGA-23xh-59cx-c5q7
Published 16-09-2025Last modified 21-10-2026

Vulnerability summary

CVE-2025-39830 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.15%
0%100%
Low · +0.02 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 8 · Related 9
OPENSUSE-SU-2025:20081-1SUSE-SU-2025:03601-1SUSE-SU-2025:03633-1SUSE-SU-2025:21074-1SUSE-SU-2025:21139-1SUSE-SU-2025:21179-1

Timeline

  1. 16-09-2025
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: HWS, Fix memory leak in hws_pool_buddy_init error path In the error path of hws_pool_buddy_init(), the buddy allocator cleanup doesn't free the allocator structure itself, causing a memory leak. Add the missing kfree() to properly release all allocated memory.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.13% on 22-09-2026

22-09-202622-10-2026

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

Ubuntu94 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)
Chainguard5 products
  • linux-aws-6.12< 6.12.68-r1 | < 6.12.72-r0 | < 6.12.63-r0 | < 6.12.62-r1 | < 6.12.67-r0 | < 6.12.77-r2 | < 6.12.62-r0 | < 6.12.70-r0 | < 6.12.74-r1 | < 6.12.71-r0 | < 6.12.72-r1 | < 6.12.60-r4 | < 6.12.69-r0 | < 6.12.65-r1 | < 6.12.66-r0 | < 6.12.65-r0 | < 6.12.76-r0 | < 6.12.62-r2 | < 6.12.77-r0 | < 6.12.68-r0 | < 6.12.80-r0 | < 6.12.78-r0 | < 6.12.77-r1 | < 6.12.74-r0 | < 6.12.65-r2
  • linux-azure-6.12< 6.12.70-r0 | < 6.12.62-r1 | < 6.12.74-r0 | < 6.12.72-r0 | < 6.12.77-r1 | < 6.12.60-r4 | < 6.12.65-r4 | < 6.12.69-r0 | < 6.12.65-r2 | < 6.12.63-r0 | < 6.12.71-r0 | < 6.12.65-r3 | < 6.12.77-r2 | < 6.12.77-r0 | < 6.12.74-r1 | < 6.12.80-r0 | < 6.12.76-r0 | < 6.12.78-r0 | < 6.12.66-r0 | < 6.12.65-r1 | < 6.12.68-r0 | < 6.12.62-r0 | < 6.12.67-r0 | < 6.12.62-r2
  • linux-gcp-6.12< 6.12.76-r0 | < 6.12.66-r0 | < 6.12.62-r2 | < 6.12.77-r0 | < 6.12.62-r0 | < 6.12.67-r0 | < 6.12.65-r0 | < 6.12.65-r2 | < 6.12.69-r0 | < 6.12.63-r0 | < 6.12.62-r1 | < 6.12.68-r1 | < 6.12.68-r0 | < 6.12.77-r2 | < 6.12.74-r1 | < 6.12.71-r0 | < 6.12.65-r1 | < 6.12.74-r0 | < 6.12.72-r0 | < 6.12.60-r4 | < 6.12.70-r0 | < 6.12.80-r0 | < 6.12.77-r1 | < 6.12.78-r0
  • linux-qemu-6.12< 6.12.68-r0 | < 6.12.67-r0 | < 6.12.77-r2 | < 6.12.69-r0 | < 6.12.66-r0 | < 6.12.70-r0 | < 6.12.77-r0 | < 6.12.76-r0 | < 6.12.65-r1 | < 6.12.72-r0 | < 6.12.74-r1 | < 6.12.77-r1 | < 6.12.80-r0 | < 6.12.71-r0 | < 6.12.74-r0 | < 6.12.78-r0 | < 6.12.65-r2
  • linux-vmware-6.12< 6.12.78-r0 | < 6.12.68-r0 | < 6.12.74-r0 | < 6.12.65-r1 | < 6.12.77-r2 | < 6.12.69-r0 | < 6.12.80-r0 | < 6.12.71-r0 | < 6.12.68-r1 | < 6.12.72-r0 | < 6.12.66-r0 | < 6.12.65-r2 | < 6.12.77-r1 | < 6.12.76-r0 | < 6.12.67-r0 | < 6.12.77-r0 | < 6.12.74-r1 | < 6.12.70-r0
Linux2 products
  • linux≥ c61afff94373641695cc81999e9bb10408ea84d5, < 4ccdbf50dd88a2a7399409e68887dd8077f6a562 | ≥ c61afff94373641695cc81999e9bb10408ea84d5, < 86d13a6f49cb68aa91bd718b1b627e72e77285c1 | ≥ c61afff94373641695cc81999e9bb10408ea84d5, < 2c0a959bebdc1ada13cf9a8242f177c5400299e6 | 6.12
  • linux_kernel≥ 6.12, < 6.16.5 | 6.17:rc1 | 6.17:rc2 | 6.17:rc3
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.16.5-1

4 vendors · 102 products

References

10 links