CVE-2011-2479
Published: 6 October 2011
The Linux kernel before 2.6.39 does not properly create transparent huge pages in response to a MAP_PRIVATE mmap system call on /dev/zero, which allows local users to cause a denial of service (system crash) via a crafted application.
From the Ubuntu Security Team
It was discovered that an mmap() call with the MAP_PRIVATE flag on "/dev/zero" was incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux
Launchpad, Ubuntu, Debian |
hardy |
Not vulnerable
|
| lucid |
Not vulnerable
|
|
| maverick |
Not vulnerable
|
|
| natty |
Released
(2.6.38-10.44)
|
|
| oneiric |
Not vulnerable
(2.6.39-1.6)
|
|
| upstream |
Released
(2.6.39~rc6)
|
|
|
Patches:
Introduced by
71e3aac0724ffe8918992d76acfe3aad7d8724a5
|
||
|
linux-ec2
Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
| lucid |
Not vulnerable
|
|
| maverick |
Ignored
(end of life)
|
|
| natty |
Does not exist
|
|
| oneiric |
Does not exist
|
|
| upstream |
Released
(2.6.39~rc6)
|
|
|
linux-fsl-imx51
Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
| lucid |
Not vulnerable
|
|
| maverick |
Does not exist
|
|
| natty |
Does not exist
|
|
| oneiric |
Does not exist
|
|
| upstream |
Released
(2.6.39~rc6)
|
|
|
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
| lucid |
Not vulnerable
|
|
| maverick |
Does not exist
|
|
| natty |
Does not exist
|
|
| oneiric |
Does not exist
|
|
| upstream |
Released
(2.6.39~rc6)
|
|
|
linux-lts-backport-natty
Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
| lucid |
Released
(2.6.38-10.44~lucid1)
|
|
| maverick |
Does not exist
|
|
| natty |
Does not exist
|
|
| oneiric |
Does not exist
|
|
| upstream |
Released
(2.6.39~rc6)
|
|
|
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
| lucid |
Not vulnerable
|
|
| maverick |
Does not exist
|
|
| natty |
Does not exist
|
|
| oneiric |
Does not exist
|
|
| upstream |
Released
(2.6.39~rc6)
|
|
|
linux-mvl-dove
Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
| lucid |
Not vulnerable
|
|
| maverick |
Not vulnerable
|
|
| natty |
Does not exist
|
|
| oneiric |
Does not exist
|
|
| upstream |
Released
(2.6.39~rc6)
|
|
|
linux-ti-omap4
Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
| lucid |
Does not exist
|
|
| maverick |
Not vulnerable
|
|
| natty |
Released
(2.6.38-1209.17)
|
|
| oneiric |
Not vulnerable
(3.0.0-1200.1)
|
|
| upstream |
Released
(2.6.39~rc6)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |