🛡️ AZL-40511 — hyperv-daemons

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2024-26993 affecting package hyperv-daemons for versions less than 5.15.158.1-1

In the Linux kernel, the following vulnerability has been resolved:

fs: sysfs: Fix reference leak in sysfs_break_active_protection()

The sysfs_break_active_protection() routine has an obvious reference

leak in its error path. If the call to kernfs_find_and_get() fails then

kn will be NULL, so the companion sysfs_unbreak_active_protection()

routine won't get called (and would only cause an access violation by

trying to dereference kn->parent if it was called). As a result, the

reference to kobj acquired at the start of the function will never be

released.

Fix the leak by adding an explicit kobject_put() call when kn is NULL.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

AZL-40511 is recorded against 1 package.

  • hyperv-daemons (fixed in 5.15.158.1-1)

Timeline and source

Published on 1 May 2024 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-05-01
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
hyperv-daemons — 5.15.158.1-1

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