Race condition in Linux kernel - CVE-2006-3626
Published: July 18, 2006 / Updated: October 2, 2026
Vulnerability identifier: #VU95460
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2006-3626
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a local user to execute arbitrary code.
Race condition in Linux kernel 2.6.17.4 and earlier allows local users to gain root privileges by using prctl with PR_SET_DUMPABLE in a way that causes /proc/self/environ to become setuid root.
Affected software
Linux kernel
How to mitigate CVE-2006-3626
Install update from vendor's repository.
Links to Public Exploits and PoC-codes
External References
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.17.5
- http://lists.grok.org.uk/pipermail/full-disclosure/2006-July/047907.html
- http://secunia.com/advisories/21041
- http://secunia.com/advisories/21057
- http://secunia.com/advisories/21073
- http://secunia.com/advisories/21119
- http://secunia.com/advisories/21123
- http://secunia.com/advisories/21179
- http://secunia.com/advisories/21498
- http://secunia.com/advisories/21605
- http://secunia.com/advisories/22174
- http://support.avaya.com/elmodocs2/security/ASA-2006-203.htm
- http://www.debian.org/security/2006/dsa-1111
- http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blobdiff;h=0cb8f20d000c25118947fcafa81606300ced35f8;hp=243a94af0427b2630fb85f489a5419410dac3bfc;hb=18b0bbd8ca6d3cb90425aa0d77b99a762c6d6de3;f=fs/proc/base.c
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:124
- http://www.novell.com/linux/security/advisories/2006_17_sr.html
- http://www.novell.com/linux/security/advisories/2006_42_kernel.html
- http://www.novell.com/linux/security/advisories/2006_47_kernel.html
- http://www.novell.com/linux/security/advisories/2006_49_kernel.html
- http://www.osvdb.org/27120
- http://www.redhat.com/support/errata/RHSA-2006-0617.html
- http://www.securityfocus.com/archive/1/440300/100/0/threaded
- http://www.securityfocus.com/bid/18992
- http://www.ubuntu.com/usn/usn-319-2
- http://www.vupen.com/english/advisories/2006/2816
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=198973
- https://exchange.xforce.ibmcloud.com/vulnerabilities/27790
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10060
- https://usn.ubuntu.com/319-1/