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CVE-2024-4418

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2024-4757-03
Posted Jul 24, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-4757-03 - An update for libvirt is now available for Red Hat Enterprise Linux 9. Issues addressed include a use-after-free vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2024-4418
SHA-256 | 791358d78547fbdfa6aef1937437d97deaee9956bc41ea04b0e20efcf5b2f77f
Red Hat Security Advisory 2024-4432-03
Posted Jul 10, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-4432-03 - An update for libvirt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include a use-after-free vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2024-4418
SHA-256 | fbd602ab1adca906d3a2063e368f400c721e8eb7551605f5e2eaee4487869c5e
Red Hat Security Advisory 2024-4351-03
Posted Jul 8, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-4351-03 - An update for the virt:rhel and virt-devel:rhel modules is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Issues addressed include a use-after-free vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2024-4418
SHA-256 | af8ebb64489a8787b50d2f7d00035c9fbc4d29b0f2722c28ed8300b38da3a1ff
Ubuntu Security Notice USN-6763-1
Posted May 9, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6763-1 - Martin Å irokov discovered that libvirt incorrectly handled certain memory operations. A local attacker could possibly use this issue to access virtproxyd without authorization.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2024-4418
SHA-256 | bf2c08727c2512c2e1c685708d13693662d532ce0a0e38ceac2e34041c213272
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