Riskcovery

CVE-2024-26993

fs: sysfs: Fix reference leak in sysfs_break_active_protection()

State
Published
Severity
Not scored
Published
May 1, 2024
Updated
Oct 15, 2026
Reserved
Feb 19, 2024

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to before f28bba37fe244889b81bb5c508d3f6e5c6e342c5Affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to before 57baab0f376bec8f54b0fe6beb8f77a57c228063Affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to before 84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17Affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to before 43f00210cb257bcb0387e8caeb4b46375d67f30cAffected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to before 5d43e072285e81b0b63cee7189b3357c7768a43bAffected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to before ac107356aabc362aaeb77463e814fc067a5d3957Affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to before a4c99b57d43bab45225ba92d574a8683f9edc8e4Affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to before a90bca2228c0646fc29a72689d308e5fe03e6d78Affected
  • e8a37b2fd5b5087bec6cbbf6946ee3caa712953bAffected
  • a6abc93760dd07fcd29760b70e6e7520f22cb288Affected
  • 461a6385e58e8247e6ba2005aa5d1b8d980ee4a2Affected
  • 8a5e02a0f46ea33ed19e48e096a8e8d28e73d10aAffected
  • c984f4d1d40a2f349503b3faf946502ccbf02f9fAffected
  • 807d1d299a04e9ad9a9dac55419c1137a105254bAffected
  • 3.16.62 to before 3.17Affected
  • 3.18.121 to before 3.19Affected
  • 4.4.154 to before 4.5Affected
  • 4.9.125 to before 4.10Affected
  • 4.14.68 to before 4.15Affected
  • 4.18.6 to before 4.19Affected
LinuxLinux
  • 4.19Affected
  • before 4.19Not affected
  • 4.19.313 through 4.19.*Not affected
  • 5.4.275 through 5.4.*Not affected
  • 5.10.216 through 5.10.*Not affected
  • 5.15.157 through 5.15.*Not affected
  • 6.1.88 through 6.1.*Not affected
  • 6.6.29 through 6.6.*Not affected
  • 6.8.8 through 6.8.*Not affected
  • 6.9 and laterNot affected

References

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