CVE-2024-26993

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux2afc9166f79b8f6da5f347f48515215ceee4ae37 < f28bba37fe244889b81bb5c508d3f6e5c6e342c5affected
LinuxLinux2afc9166f79b8f6da5f347f48515215ceee4ae37 < 57baab0f376bec8f54b0fe6beb8f77a57c228063affected
LinuxLinux2afc9166f79b8f6da5f347f48515215ceee4ae37 < 84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17affected
LinuxLinux2afc9166f79b8f6da5f347f48515215ceee4ae37 < 43f00210cb257bcb0387e8caeb4b46375d67f30caffected
LinuxLinux2afc9166f79b8f6da5f347f48515215ceee4ae37 < 5d43e072285e81b0b63cee7189b3357c7768a43baffected
LinuxLinux2afc9166f79b8f6da5f347f48515215ceee4ae37 < ac107356aabc362aaeb77463e814fc067a5d3957affected
LinuxLinux2afc9166f79b8f6da5f347f48515215ceee4ae37 < a4c99b57d43bab45225ba92d574a8683f9edc8e4affected
LinuxLinux2afc9166f79b8f6da5f347f48515215ceee4ae37 < a90bca2228c0646fc29a72689d308e5fe03e6d78affected
LinuxLinuxe8a37b2fd5b5087bec6cbbf6946ee3caa712953baffected
LinuxLinuxa6abc93760dd07fcd29760b70e6e7520f22cb288affected
LinuxLinux461a6385e58e8247e6ba2005aa5d1b8d980ee4a2affected
LinuxLinux8a5e02a0f46ea33ed19e48e096a8e8d28e73d10aaffected
LinuxLinuxc984f4d1d40a2f349503b3faf946502ccbf02f9faffected
LinuxLinux807d1d299a04e9ad9a9dac55419c1137a105254baffected
LinuxLinux3.16.62 < 3.17affected
LinuxLinux3.18.121 < 3.19affected
LinuxLinux4.4.154 < 4.5affected
LinuxLinux4.9.125 < 4.10affected
LinuxLinux4.14.68 < 4.15affected
LinuxLinux4.18.6 < 4.19affected
LinuxLinux4.19affected
LinuxLinux0 < 4.19unaffected
LinuxLinux4.19.313 <= 4.19.*unaffected
LinuxLinux5.4.275 <= 5.4.*unaffected
LinuxLinux5.10.216 <= 5.10.*unaffected
LinuxLinux5.15.157 <= 5.15.*unaffected
LinuxLinux6.1.88 <= 6.1.*unaffected
LinuxLinux6.6.29 <= 6.6.*unaffected
LinuxLinux6.8.8 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

Additional References

References