CVE-2026-72040: ipmi: fix refcount leak in i_ipmi_request()

Received
AliasesUBUNTU-CVE-2026-72040DEBIAN-CVE-2026-72040
Published 15-08-2026Last modified 23-08-2026

Vulnerability summary

CVE-2026-72040 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11.4% of scored vulnerabilities.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
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 17 · Related 17
OPENSUSE-SU-2026:22167-1SUSE-SU-2026:24371-1SUSE-SU-2026:24379-1SUSE-SU-2026:24386-1SUSE-SU-2026:24422-1SUSE-SU-2026:24437-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 23-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ipmi: fix refcount leak in i_ipmi_request() When a caller provides a `supplied_recv` message to i_ipmi_request(), the function increments the user's `nr_msgs` reference count. If an error occurs later, the out_err cleanup path only frees the recv_msg if the function allocated it itself (i.e., !supplied_recv). In the supplied_recv case the cleanup is skipped, leaving the reference count elevated. The caller ipmi_request_supply_msgs() does not release the supplied_recv on error, so the reference is permanently leaked. Fix this by explicitly reverting the reference count operations when a supplied recv_msg with a valid user pointer is present in the error path: decrement nr_msgs and drop the user's kref.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.21% 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: not stated in public data.

Ubuntu142 products
  • linuxAll versions (No fix recorded) | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.101-1 | < 7.1.5-1
  • linux-6.12< 6.12.101-1~deb12u1
Linux1 product
  • linux≥ f63723ca7d7623f9dae1990973cd158671f03c56, < 122ca6b2af714e114c9b872a48372ace31a9ab1f | ≥ 348121b29594d42d1635648fd3ed31dfa25351d5, < 9409e18ffe7378d202efe1cf69989df9f67b0369 | ≥ 53d6e403affbf6df2c859a0ea00ccfc1e72090ca, < e2a3b77df6aef031455dd83ea8ed4344b7dca1f9 | ≥ b52da4054ee0bf9ecb44996f2c83236ff50b3812, < f5c5065963024390ddad51bd455d1adc710de575 | ≥ b52da4054ee0bf9ecb44996f2c83236ff50b3812, < 0fd23994ec8c5436d9f0b50848deb87ed933e6b3 | ≥ b52da4054ee0bf9ecb44996f2c83236ff50b3812, < a3f3859cecacb64f18fd446271ece9a3b3f2d4de | 0ed73be9a2547ffb9b5c1d879ad9bfab73d920b5 | ≥ 6.1.157, < 6.1.184 | ≥ 6.6.113, < 6.6.148 | ≥ 6.12.54, < 6.12.101 | ≥ 6.17.4, < 6.18 | 6.18

3 vendors · 145 products

References

18 links
Show all 18 references