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CVE-2006-0744

Linux kernel before 2.6.16.5 does not properly handle uncanonical return addresses on Intel EM64T...

4.9 Medium

Linux kernel before 2.6.16.5 does not properly handle uncanonical return addresses on Intel EM64T CPUs, which reports an exception in the SYSRET instead of the next instruction, which causes the kernel exception handler to run on the user stack with the wrong GS.

Exploit likelihood

0.48%Down 1.1 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.9

Linux kernel before 2.6.16.5 does not properly handle uncanonical return addresses on Intel EM64T CPUs, which reports an exception in the SYSRET instead of the next instruction, which causes the kernel exception handler to run on the user stack with the wrong GS.

Record
CVE-2006-0744
CVSS 2.0
4.9 MediumAV:L/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

Linux kernel before 2.6.16.5 does not properly handle uncanonical return addresses on Intel EM64T CPUs, which reports an exception in the SYSRET instead of the next instruction, which causes the kernel exception handler to run on the user stack with the wrong GS.

Record
CVE-2006-0744
Updated
2026-11-02
EUVDEUVD-2006-0750 No score

Linux kernel before 2.6.16.5 does not properly handle uncanonical return addresses on Intel EM64T CPUs, which reports an exception in the SYSRET instead of the next instruction, which causes the kernel exception handler to run on the user stack with the wrong GS.

Record
EUVD-2006-0750
Updated
2026-11-03
GitHub AdvisoriesGHSA-58v9-vmqx-g2rc No score

Linux kernel before 2.6.16.5 does not properly handle uncanonical return addresses on Intel EM64T...

Linux kernel before 2.6.16.5 does not properly handle uncanonical return addresses on Intel EM64T CPUs, which reports an exception in the SYSRET instead of the next instruction, which causes the kernel exception handler to run on the user stack with the wrong GS.

Record
GHSA-58v9-vmqx-g2rc
Weakness
CWE-20
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
kernel-source-2.6.8
Debian:3.1
From an advisory covering 24 CVEs
 before 2.6.8-16sarge3, plus listed versions
2.6.8-162.6.8-16sarge12.6.8-16sarge2
2.6.8-16sarge3
kernel
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-BOOT
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-debuginfo
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-doc
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-hugemem
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-hugemem-unsupported
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-smp
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-smp-unsupported
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-source
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
Show 71 moreShow less
Affected packages
PackageAffectedFixed
kernel-unsupported
Red Hat:enterprise_linux:3::as
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-BOOT
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-debuginfo
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-doc
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-hugemem
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-hugemem-unsupported
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-smp
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-smp-unsupported
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-source
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-unsupported
Red Hat:enterprise_linux:3::desktop
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-BOOT
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-debuginfo
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-doc
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-hugemem
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-hugemem-unsupported
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-smp
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-smp-unsupported
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-source
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-unsupported
Red Hat:enterprise_linux:3::es
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-BOOT
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-debuginfo
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-doc
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-hugemem
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-hugemem-unsupported
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-smp
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-smp-unsupported
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-source
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel-unsupported
Red Hat:enterprise_linux:3::ws
From an advisory covering 9 CVEs
 before 0:2.4.21-47.EL
0:2.4.21-47.EL
kernel
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-doc
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-hugemem
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-hugemem-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-largesmp
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-largesmp-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-smp
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-smp-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-doc
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-hugemem
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-hugemem-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-largesmp
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-largesmp-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-smp
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-smp-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-doc
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-hugemem
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-hugemem-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-largesmp
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-largesmp-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-smp
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-smp-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-doc
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-hugemem
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-hugemem-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-largesmp
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-largesmp-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-smp
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL
kernel-smp-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 17 CVEs
 before 0:2.6.9-34.0.1.EL
0:2.6.9-34.0.1.EL

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2006-0744 is a medium vulnerability (CVSS 4.9) in Linux Kernel, published April 18, 2006. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. No source names a fixed version.

References

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Left out here: 3 references. The JSON record has them.

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