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CVE-2006-5755Linux kernel before 2.6.18, when running on x86_64 systems, does not properly save or restore EFLAGS during a context switch, which allows…
- 4.9MediumCVSS base score
- 0.42%Exploitation in 30 daysEPSS · top 63% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By redhat
- 2 months later
· 2 months later
Published
- 18 years later
· 18 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 0.42% · top 63% of all CVEs (12 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.9.
Affected products
n/a
- affected n/a
References
References16
- 32485 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 24098 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2008:0957 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 26994 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- MDKSA-2007:171 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- USN-416-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 26060 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 26620 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-1381 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.18-git13.log (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20070615 rPSA-2007-0124-1 kernel xen (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=658fdbef66e5e9be79b457edc2cbbb3add840aa9 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.18 (opens in a new tab)x_refsource_CONFIRMx_transferred
- oval:org.mitre.oval:def:9554 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 25691 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2006-5739 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2006-5755)Record last updated .