Description
The mincore function in the Linux kernel before 2.4.33.6 does not properly lock access to user space, which has unspecified impact and attack vectors, possibly related to a deadlock.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.1 | hostap-modules-i386 | 1:0.3.7-1sarge3 | DSA-1503-1 |
| Debian 3.1 | i2c | 1:2.9.1-1sarge2 | DSA-1503-1 |
| Debian 3.1 | kernel-image-2.4.27-arm +1 | 2.4.27-2sarge6 | DSA-1503-1 |
| Debian 3.1 | kernel-image-2.4.27-m68k | 2.4.27-3sarge6 | DSA-1503-1 |
| Debian 3.1 | kernel-image-2.4.27-sparc | 2.4.27-9sarge6 | DSA-1503-1 |
| Debian 3.1 | kernel-image-speakup-i386 | 2.4.27-1.1sarge5 | DSA-1503-1 |
| Debian 3.1 | kernel-latest-2.4-alpha | 101sarge3 | DSA-1503-1 |
| Debian 3.1 | kernel-latest-2.4-i386 | 101sarge2 | DSA-1503-1 |
| Debian 3.1 | kernel-latest-2.4-s390 | 2.4.27-1sarge2 | DSA-1503-1 |
| Debian 3.1 | kernel-latest-2.4-sparc | 42sarge3 | DSA-1503-1 |
| Debian 3.1 | kernel-patch-2.4.27-mips | 2.4.27-10.sarge4.040815-3 | DSA-1503-1 |
| Debian 3.1 | kernel-source-2.4.27 +4 | 2.4.27-10sarge6 | DSA-1503-2, DSA-1503-1 |
| Debian 3.1 | kernel-source-2.6.8 | 2.6.8-16sarge7 | DSA-1304-1 |
| Debian 3.1 | mindi-kernel | 2.4.27-2sarge5 | DSA-1503-1 |
| Debian 3.1 | pcmcia-modules-2.4.27-i386 | 3.2.5+2sarge2 | DSA-1503-1 |
| Debian 3.1 | systemimager | 3.2.3-6sarge5 | DSA-1503-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | kernel +8 | 2.6.9-42.0.8.EL | RHSA-2007:0014 |
| RHEL 3 | kernel +8 | 2.4.21-57.EL | RHSA-2008:0211 |
| RHEL 2 | kernel +8 | 2.4.9-e.74 | RHSA-2009:0001, RHSA-2008:0787 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
tagatac/linux-CVE-2006-4814 ★ 0 · Sep 18, 2014
A deadlock on the mmap semaphore ‘mmap sem’ in the CentOS 3.9 kernel, that is triggered by a specific interleaving of concurrent threads, one calling the mmap system call and the other calling the mi…
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 7
- RHSA-2007:0014 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2009:0001 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2008:0211 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1503-2 kernel-source-2.4.27 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1503-1 kernelimage-2.4.27 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1304-1 kernel-source-2.6.8 - several Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2008:0787 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- 2007-0002 vendor-advisory
- 24098 third-party-advisory
- 23609 third-party-advisory
- oval:org.mitre.oval:def:9648 vdb-entry signature
- RHSA-2007:0014 vendor-advisory
- 23436 third-party-advisory
- 21663 vdb-entry
- MDKSA-2007:040 vendor-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2007-063.htm
- USN-416-1 vendor-advisory
- 24100 third-party-advisory
- 30110 third-party-advisory
- ADV-2008-2222 vdb-entry
- ADV-2006-5082 vdb-entry
- http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.33.6
- 33280 third-party-advisory
- 24206 third-party-advisory
- 23997 third-party-advisory
- 20070615 rPSA-2007-0124-1 kernel xen mailing-list
- 24482 third-party-advisory
- SUSE-SA:2007:018 vendor-advisory
- DSA-1503 vendor-advisory
- 29058 third-party-advisory
- DSA-1304 vendor-advisory
- RHSA-2008:0211 vendor-advisory
- 25714 third-party-advisory
- RHSA-2008:0787 vendor-advisory
- [Security-announce] 20080728 VMSA-2008-00011 Updated ESX service console packages for Samba and vmnix mailing-list
- 25691 third-party-advisory
- MDKSA-2007:060 vendor-advisory
- 31246 third-party-advisory