CVE-2006-5173
Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows…
- 2.1LowCVSS base score
- 0.43%Exploitation in 30 daysEPSS · top 62% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows local users to cause a denial of service (process crash), as demonstrated using a process that sets the Alignment Check flag (EFLAGS 0x40000), which triggers a SIGBUS in other processes that have an unaligned access.
Timeline
ID reserved
By mitre
- 12 days later
· 12 days 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 | Low2.1 | AV:L/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 0.43% · top 62% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.1.
Affected products
n/a
- affected n/a
References
References11
- SUSE-SA:2006:079 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 23361 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 23593 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 23384 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 21851 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=47a5c6fa0e204a2b63309c648bb2fde36836c826 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 23474 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20070615 rPSA-2007-0124-1 kernel xen (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- MDKSA-2007:002 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- USN-395-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_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-2006-5158 (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-2006-5173)Record last updated .