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CVE PROGRAM SOURCE RECORDUnscored

CVE-2024-26993

fs: sysfs: Fix reference leak in sysfs_break_active_protection()

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to < f28bba37fe244889b81bb5c508d3f6e5c6e342c5affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to < 57baab0f376bec8f54b0fe6beb8f77a57c228063affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to < 84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to < 43f00210cb257bcb0387e8caeb4b46375d67f30caffected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to < 5d43e072285e81b0b63cee7189b3357c7768a43baffected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to < ac107356aabc362aaeb77463e814fc067a5d3957affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to < a4c99b57d43bab45225ba92d574a8683f9edc8e4affected
  • 2afc9166f79b8f6da5f347f48515215ceee4ae37 to < a90bca2228c0646fc29a72689d308e5fe03e6d78affected
  • e8a37b2fd5b5087bec6cbbf6946ee3caa712953baffected
  • a6abc93760dd07fcd29760b70e6e7520f22cb288affected
  • 461a6385e58e8247e6ba2005aa5d1b8d980ee4a2affected
  • 8a5e02a0f46ea33ed19e48e096a8e8d28e73d10aaffected
  • c984f4d1d40a2f349503b3faf946502ccbf02f9faffected
  • 807d1d299a04e9ad9a9dac55419c1137a105254baffected
  • 3.16.62 to < 3.17affected
  • 3.18.121 to < 3.19affected
  • 4.4.154 to < 4.5affected
  • 4.9.125 to < 4.10affected
  • 4.14.68 to < 4.15affected
  • 4.18.6 to < 4.19affected

Linux Linux

Default version status: affected

  • 4.19affected
  • 0 to < 4.19unaffected
  • 4.19.313 to ≤ 4.19.*unaffected
  • 5.4.275 to ≤ 5.4.*unaffected
  • 5.10.216 to ≤ 5.10.*unaffected
  • 5.15.157 to ≤ 5.15.*unaffected
  • 6.1.88 to ≤ 6.1.*unaffected
  • 6.6.29 to ≤ 6.6.*unaffected
  • 6.8.8 to ≤ 6.8.*unaffected
  • 6.9 to ≤ *unaffected

References