CVE-2024-4418

Summary

A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the data pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer's stack frame was concurrently being "freed" when returning from virNetClientIOEventLoop(). The 'virtproxyd' daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.

Affected Software

VendorProductVersion RangeStatus
0 < 10.4.0affected
Red HatRed Hat Enterprise Linux 88100020240606142719.489197e6 < *unaffected
Red HatRed Hat Enterprise Linux 88100020240606142719.489197e6 < *unaffected
Red HatRed Hat Enterprise Linux 90:10.0.0-6.6.el9_4 < *unaffected
Red HatRed Hat Enterprise Linux 9.2 Extended Update Support0:9.0.0-10.7.el9_2 < *unaffected

Weaknesses

  • CWE-562: Return of Stack Variable Address

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References