CVE-2022-48699

Summary

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

sched/debug: fix dentry leak in update_sched_domain_debugfs

Kuyo reports that the pattern of using debugfs_remove(debugfs_lookup()) leaks a dentry and with a hotplug stress test, the machine eventually runs out of memory.

Fix this up by using the newly created debugfs_lookup_and_remove() call instead which properly handles the dentry reference counting logic.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3b87f136f8fccddf7da016ab7d04bb3cf9b180f0 < 26e9a1ded8923510e5529fbb28390b22228700c2affected
LinuxLinux3b87f136f8fccddf7da016ab7d04bb3cf9b180f0 < 0c32a93963e03c03e561d5a066eedad211880ba3affected
LinuxLinux3b87f136f8fccddf7da016ab7d04bb3cf9b180f0 < c2e406596571659451f4b95e37ddfd5a8ef1d0dcaffected
LinuxLinux5.13affected
LinuxLinux0 < 5.13unaffected
LinuxLinux5.15.68 <= 5.15.*unaffected
LinuxLinux5.19.9 <= 5.19.*unaffected
LinuxLinux6.0 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References