MEDIUM
security flaw
Published Apr 18, 2006
4.9
MEDIUMCVSS 2.0
EPSS 0.46%
Description
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.
Affected products
No data.
OR
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.0
- 2.6.1
- 2.6.1
- 2.6.1
- 2.6.1
- 2.6.2
- 2.6.2
- 2.6.2
- 2.6.2
- 2.6.3
- 2.6.3
- 2.6.3
- 2.6.3
- 2.6.3
- 2.6.4
- 2.6.4
- 2.6.4
- 2.6.4
- 2.6.5
- 2.6.5
- 2.6.5
- 2.6.5
- 2.6.6
- 2.6.6
- 2.6.6
- 2.6.6
- 2.6.7
- 2.6.7
- 2.6.7
- 2.6.7
- 2.6.8
- 2.6.8
- 2.6.8
- 2.6.8
- 2.6.8
- 2.6.9
- 2.6.9
- 2.6.9
- 2.6.9
- 2.6.9
- 2.6.9
- 2.6.10
- 2.6.10
- 2.6.10
- 2.6.10
- 2.6.11
- 2.6.11
- 2.6.11
- 2.6.11
- 2.6.11
- 2.6.11
- 2.6.11.1
- 2.6.11.2
- 2.6.11.3
- 2.6.11.4
- 2.6.11.5
- 2.6.11.6
- 2.6.11.7
- 2.6.11.8
- 2.6.11.9
- 2.6.11.10
- 2.6.11.11
- 2.6.11.12
- 2.6.12
- 2.6.12
- 2.6.12
- 2.6.12
- 2.6.12
- 2.6.12
- 2.6.12.1
- 2.6.12.2
- 2.6.12.3
- 2.6.12.4
- 2.6.12.5
- 2.6.12.6
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13
- 2.6.13.1
- 2.6.13.2
- 2.6.13.3
- 2.6.13.4
- 2.6.14
- 2.6.14
- 2.6.14
- 2.6.14
- 2.6.14
- 2.6.14
- 2.6.14.1
- 2.6.14.2
- 2.6.14.3
- 2.6.14.4
- 2.6.14.5
- 2.6.14.6
- 2.6.14.7
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15
- 2.6.15.1
- 2.6.15.2
- 2.6.15.3
- 2.6.15.4
- 2.6.15.5
- 2.6.15.6
- 2.6.15.7
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16
- 2.6.16.1
- 2.6.16.2
- 2.6.16.3
- 2.6.16.4
- 2.6.16_rc7
- 2.6_test9_cvs
No data.
Red Hat Enterprise Linux 3
kernel-0:2.4.21-47.EL
Fixed · RHSA-2006:0437
Red Hat Enterprise Linux 4
kernel-0:2.6.9-34.0.1.EL
Fixed · RHSA-2006:0493
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 3 | kernel-0:2.4.21-47.EL | Fixed | RHSA-2006:0437 |
| Red Hat Enterprise Linux 4 | kernel-0:2.6.9-34.0.1.EL | Fixed | RHSA-2006:0493 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
4.9 MEDIUM NVD
AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.46% 0.00465
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00465
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.46% (0.00465) | 37.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.46% (0.00465) | 36.48th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.11% (0.00108) | 26.67th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00105) | 44.69th | v3 (v2023.03.01) |
| Jun 14, 2023 | 0.11% (0.00108) | 42.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00072) | 29.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
Weaknesses (1)
References (36)
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.5 x_refsource_CONFIRM
- http://lwn.net/Alerts/180820/ vendor-advisoryx_refsource_FEDORA
- http://secunia.com/advisories/19639 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/19735 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/20157 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/20237 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/20398 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/20716 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/20914 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/21136 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/21179 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/21498 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/21745 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/21983 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://support.avaya.com/elmodocs2/security/ASA-2006-161.htm x_refsource_CONFIRM
- http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm x_refsource_CONFIRM
- http://www.debian.org/security/2006/dsa-1103 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:086 vendor-advisoryx_refsource_MANDRIVA
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:150 vendor-advisoryx_refsource_MANDRIVA
- http://www.novell.com/linux/security/advisories/2006-05-31.html vendor-advisoryx_refsource_SUSE
- http://www.novell.com/linux/security/advisories/2006_42_kernel.html vendor-advisoryx_refsource_SUSE
- http://www.novell.com/linux/security/advisories/2006_47_kernel.html vendor-advisoryx_refsource_SUSE
- http://www.osvdb.org/24639 vdb-entryx_refsource_OSVDB
- http://www.redhat.com/support/errata/RHSA-2006-0437.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2006-0493.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/17541 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/usn-302-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2006/1390 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2006/1475 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2006/2554 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2006-0744 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1618016 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/25869 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2006-0744
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9732 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2006-0744
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Apr 18, 2006
Updated Aug 7, 2024
Reserved Feb 17, 2006
Link CVE-2006-0744
CISA Vulnrichment
Updated n/a