CVE-2023-3354
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Improper i/o watch removal in tls handshake can lead to remote unauthenticated denial of service
A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
qemu
- Vendor
- n/a
- Product
- qemu
- Platforms
- Unknown
- Default status
affected
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 6
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 6
- Platforms
- Unknown
- Default status
unaffected- Package
- qemu-kvm
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 7
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 7
- Platforms
- Unknown
- Default status
unaffected- Package
- qemu-kvm
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 7
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 7
- Platforms
- Unknown
- Default status
affected- Package
- qemu-kvm-ma
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 8
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 8
- Platforms
- Unknown
- Default status
affected- Package
- virt:rhel/qemu-kvm
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 8 Advanced Virtualization
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 8 Advanced Virtualization
- Platforms
- Unknown
- Default status
affected- Package
- virt:av/qemu-kvm
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 9
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 9
- Platforms
- Unknown
- Default status
affected- Package
- qemu-kvm
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat OpenStack Platform 13 (Queens)
- Vendor
- Red Hat
- Product
- Red Hat OpenStack Platform 13 (Queens)
- Platforms
- Unknown
- Default status
affected- Package
- qemu-kvm-rhev
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Fedora
- Vendor
- Fedora
- Product
- Fedora
- Platforms
- Unknown
- Default status
affected- Package
- qemu
- Package collection
- https://packages.fedoraproject.org/
No explicit version tuples; consult this entry's default status.
Extra Packages for Enterprise Linux
- Vendor
- Fedora
- Product
- Extra Packages for Enterprise Linux
- Platforms
- Unknown
- Default status
unaffected- Package
- qemu
- Package collection
- https://packages.fedoraproject.org/
No explicit version tuples; consult this entry's default status.