fs: sysfs: Fix reference leak in sysfs_break_active_protection()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-26993
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-05-01 06:15:17 UTC
Updated2026-05-12 12:16:29 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: NVD-CWE-Other

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2afc9166f79b8f6da5f347f48515215ceee4ae37 f28bba37fe244889b81bb5c508d3f6e5c6e342c5 git Not specified
CNA Linux Linux affected 2afc9166f79b8f6da5f347f48515215ceee4ae37 57baab0f376bec8f54b0fe6beb8f77a57c228063 git Not specified
CNA Linux Linux affected 2afc9166f79b8f6da5f347f48515215ceee4ae37 84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17 git Not specified
CNA Linux Linux affected 2afc9166f79b8f6da5f347f48515215ceee4ae37 43f00210cb257bcb0387e8caeb4b46375d67f30c git Not specified
CNA Linux Linux affected 2afc9166f79b8f6da5f347f48515215ceee4ae37 5d43e072285e81b0b63cee7189b3357c7768a43b git Not specified
CNA Linux Linux affected 2afc9166f79b8f6da5f347f48515215ceee4ae37 ac107356aabc362aaeb77463e814fc067a5d3957 git Not specified
CNA Linux Linux affected 2afc9166f79b8f6da5f347f48515215ceee4ae37 a4c99b57d43bab45225ba92d574a8683f9edc8e4 git Not specified
CNA Linux Linux affected 2afc9166f79b8f6da5f347f48515215ceee4ae37 a90bca2228c0646fc29a72689d308e5fe03e6d78 git Not specified
CNA Linux Linux affected e8a37b2fd5b5087bec6cbbf6946ee3caa712953b git Not specified
CNA Linux Linux affected a6abc93760dd07fcd29760b70e6e7520f22cb288 git Not specified
CNA Linux Linux affected 461a6385e58e8247e6ba2005aa5d1b8d980ee4a2 git Not specified
CNA Linux Linux affected 8a5e02a0f46ea33ed19e48e096a8e8d28e73d10a git Not specified
CNA Linux Linux affected c984f4d1d40a2f349503b3faf946502ccbf02f9f git Not specified
CNA Linux Linux affected 807d1d299a04e9ad9a9dac55419c1137a105254b git Not specified
CNA Linux Linux affected 4.19 Not specified
CNA Linux Linux unaffected 4.19 semver Not specified
CNA Linux Linux unaffected 4.19.313 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.275 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.216 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.157 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.88 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.29 6.6.* semver Not specified
CNA Linux Linux unaffected 6.8.8 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified
ADP Siemens RUGGEDCOM RST2428P affected V3.1 custom Not specified
ADP Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 Family unaffected * custom Not specified
ADP Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 Family affected V3.1 custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
git.kernel.org/stable/c/f28bba37fe244889b81bb5c508d3f6e5c6e342c5 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43b af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-613116.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
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