CVE-2024-39494

Summary

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

ima: Fix use-after-free on a dentry's dname.name

->d_name.name can change on rename and the earlier value can be freed; there are conditions sufficient to stabilize it (->d_lock on dentry, ->d_lock on its parent, ->i_rwsem exclusive on the parent's inode, rename_lock), but none of those are met at any of the sites. Take a stable snapshot of the name instead.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2fe5d6def1672ae6635dd71867bf36dcfaa7434b < 480afcbeb7aaaa22677d3dd48ec590b441eaac1aaffected
LinuxLinux2fe5d6def1672ae6635dd71867bf36dcfaa7434b < edf287bc610b18d7a9c0c0c1cb2e97b9348c71bbaffected
LinuxLinux2fe5d6def1672ae6635dd71867bf36dcfaa7434b < 0b31e28fbd773aefb6164687e0767319b8199829affected
LinuxLinux2fe5d6def1672ae6635dd71867bf36dcfaa7434b < 7fb374981e31c193b1152ed8d3b0a95b671330d4affected
LinuxLinux2fe5d6def1672ae6635dd71867bf36dcfaa7434b < dd431c3ac1fc34a9268580dd59ad3e3c76b32a8caffected
LinuxLinux2fe5d6def1672ae6635dd71867bf36dcfaa7434b < a78a6f0da57d058e2009e9958fdcef66f165208caffected
LinuxLinux2fe5d6def1672ae6635dd71867bf36dcfaa7434b < be84f32bb2c981ca670922e047cdde1488b233deaffected
LinuxLinux3.7affected
LinuxLinux0 < 3.7unaffected
LinuxLinux5.4.291 <= 5.4.*unaffected
LinuxLinux5.10.235 <= 5.10.*unaffected
LinuxLinux5.15.174 <= 5.15.*unaffected
LinuxLinux6.1.97 <= 6.1.*unaffected
LinuxLinux6.6.35 <= 6.6.*unaffected
LinuxLinux6.9.6 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References