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CVE PROGRAM SOURCE RECORD6.2 Medium

CVE-2024-4418

Libvirt: stack use-after-free in virnetclientioeventloop()

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Status
Published
Published
Updated
Assigning organization
redhat

Description

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 products

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

libvirt

Default version status: unaffected

  • 0 to < 10.4.0affected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 8100020240606142719.489197e6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 8100020240606142719.489197e6 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:10.0.0-6.6.el9_4 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support

Default version status: affected

  • 0:9.0.0-10.7.el9_2 to < *unaffected

Red Hat Red Hat Enterprise Linux 6

Default version status: unknown

Red Hat Red Hat Enterprise Linux 7

Default version status: unknown

Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization

Default version status: affected

References