CVE-2006-5755
MEDIUM · CVSS 4.9EPSS 0.4%EU EUVD
Linux kernel before 2.6.18, when running on x86_64 systems, does not properly save or restore EFLAGS during a context switch, which allows local users to cause a denial of service (crash) by causing SYSENTER to set an NT flag, which can trigger a crash on the IRET of the next task.
Key facts
- CVSS score
- 4.9 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:L/AC:L/Au:N/C:N/I:N/A:C- EPSS score
- 0.4% (36th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2006-5739)
- Published
- December 31, 2006
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2006-5739 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- linux / linux kernel
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9
- http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9
- http://secunia.com/advisories/24098
- http://secunia.com/advisories/25691
- http://secunia.com/advisories/26620
- http://secunia.com/advisories/26994
- http://secunia.com/advisories/32485
- http://www.debian.org/security/2007/dsa-1381
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.18
- http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.18-git13.log
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:171
- http://www.redhat.com/support/errata/RHSA-2008-0957.html
- http://www.securityfocus.com/archive/1/471457
- http://www.securityfocus.com/bid/26060
- http://www.ubuntu.com/usn/usn-416-1
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9554
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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