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    CVE-2008-4539

    Heap-based buffer overflow in the Cirrus VGA implementation in (1) KVM before kvm-82 and (2) QEMU on Debian GNU/Linux and Ubuntu might allow local users to gain privileges by using the VNC console for a connection, aka the LGD-54XX "bitblt" heap overflow. NOTE: this issue exists because of an incorrect fix for CVE-2007-1320.

    Published:Oct 29, 2008
    Last Modified:Apr 23, 2026
    EPS:Dec 29, 2008
    EPSS Score:0.00048
    CVSS Score:7.2

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Kvm Qumranet
    Product
    Kvm
    Vendor
    Qemu
    Product
    Qemu

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://git.kernel.dk/?p=qemu.git%3Ba=commitdiff%3Bh=65d35a09979e63541afc5bfc595b9f1b1b4ae069
    http://groups.google.com/group/linux.debian.changes.devel/msg/9e0dc008572f2867?dmode=source
    http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html
    http://secunia.com/advisories/25073
    http://secunia.com/advisories/29129
    http://secunia.com/advisories/33350
    http://secunia.com/advisories/34642
    http://secunia.com/advisories/35031
    http://secunia.com/advisories/35062
    http://svn.savannah.gnu.org/viewvc/?view=rev&root=qemu&revision=5587
    http://www.debian.org/security/2009/dsa-1799
    http://www.mail-archive.com/cvs-all%40freebsd.org/msg129730.html
    http://www.mail-archive.com/secure-testing-commits%40lists.alioth.debian.org/msg09322.html
    http://www.ubuntu.com/usn/usn-776-1
    https://bugzilla.redhat.com/show_bug.cgi?id=237342
    https://bugzilla.redhat.com/show_bug.cgi?id=448525
    https://bugzilla.redhat.com/show_bug.cgi?id=466890
    https://exchange.xforce.ibmcloud.com/vulnerabilities/47736
    https://launchpad.net/ubuntu/jaunty/+source/qemu/0.9.1+svn20081112-1ubuntu1
    https://www.redhat.com/archives/fedora-package-announce/2008-December/msg01223.html
    http://git.kernel.dk/?p=qemu.git%3Ba=commitdiff%3Bh=65d35a09979e63541afc5bfc595b9f1b1b4ae069
    http://groups.google.com/group/linux.debian.changes.devel/msg/9e0dc008572f2867?dmode=source
    http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html
    http://secunia.com/advisories/25073
    http://secunia.com/advisories/29129
    http://secunia.com/advisories/33350
    http://secunia.com/advisories/34642
    http://secunia.com/advisories/35031
    http://secunia.com/advisories/35062
    http://svn.savannah.gnu.org/viewvc/?view=rev&root=qemu&revision=5587
    http://www.debian.org/security/2009/dsa-1799
    http://www.mail-archive.com/cvs-all%40freebsd.org/msg129730.html
    http://www.mail-archive.com/secure-testing-commits%40lists.alioth.debian.org/msg09322.html
    http://www.ubuntu.com/usn/usn-776-1
    https://bugzilla.redhat.com/show_bug.cgi?id=237342
    https://bugzilla.redhat.com/show_bug.cgi?id=448525
    https://bugzilla.redhat.com/show_bug.cgi?id=466890
    https://exchange.xforce.ibmcloud.com/vulnerabilities/47736
    https://launchpad.net/ubuntu/jaunty/+source/qemu/0.9.1+svn20081112-1ubuntu1
    https://www.redhat.com/archives/fedora-package-announce/2008-December/msg01223.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High