Description
The do_anonymous_page function in mm/memory.c in the Linux kernel before 2.6.27.52, 2.6.32.x before 2.6.32.19, 2.6.34.x before 2.6.34.4, and 2.6.35.x before 2.6.35.2 does not properly separate the stack and the heap, which allows context-dependent attackers to execute arbitrary code by writing to the bottom page of a shared memory segment, as demonstrated by a memory-exhaustion attack against the X.Org X server.
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 5.0 | linux-2.6 | 2.6.26-24lenny1 | DSA-2094-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +12 | 2.6.18-194.11.3.el5 | RHSA-2010:0661 |
| RHEL 4 | kernel +10 | 2.6.9-89.0.29.EL | RHSA-2010:0676 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5.4 EUS | kernel +12 | 2.6.18-164.25.1.el5 | RHSA-2010:0670 |
| RHEL 5.3 EUS | kernel +12 | 2.6.18-128.23.1.el5 | RHSA-2010:0660 |
| RHEL 4.7 EUS | kernel +10 | 2.6.9-78.0.32.EL | RHSA-2010:0677 |
| RHEL 3 ELS | kernel +8 | 2.4.21-66.EL | RHSA-2010:0882 |
| Red Hat MRG 1 | kernel-rt +10 | 2.6.24.7-161.el5rt | RHSA-2010:0631 |
Advisories 8
- RHSA-2010:0882 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2010:0670 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0660 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0631 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0661 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2010:0677 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2010:0676 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2094-1 linux-2.6 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.52
- MDVSA-2010:198 vendor-advisory
- RHSA-2010:0670 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34.4
- oval:org.mitre.oval:def:13247 vdb-entry signature
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=320b2b8de12698082609ebbc1a17165727f4c893
- RHSA-2010:0660 vendor-advisory
- http://www.vmware.com/security/advisories/VMSA-2011-0007.html
- https://bugzilla.redhat.com/show_bug.cgi?id=606611
- RHSA-2010:0661 vendor-advisory
- RHSA-2010:0882 vendor-advisory
- MDVSA-2011:051 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35.2
- http://www.vmware.com/security/advisories/VMSA-2011-0009.html
- DSA-2094 vendor-advisory
- http://www.invisiblethingslab.com/resources/misc-2010/xorg-large-memory-attacks.pdf
- [security-announce] 20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console mailing-list
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.19
- 20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console mailing-list
- MDVSA-2010:172 vendor-advisory
- 1024344 vdb-entry