CVE-2012-0056
Summary
| CVE | CVE-2012-0056 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2012-01-27 15:55:04 UTC |
| Updated | 2026-04-29 01:13:23 UTC |
| Description | The mem_write function in the Linux kernel before 3.2.2, when ASLR is disabled, does not properly check permissions when writing to /proc/<pid>/mem, which allows local users to gain privileges by modifying process memory, as demonstrated by Mempodipper. |
Risk And Classification
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
MediumAuthentication
NoneConfidentiality
CompleteIntegrity
CompleteAvailability
CompleteAV:L/AC:M/Au:N/C:C/I:C/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| oss-security - Re: CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List, Third Party Advisory |
| About Secunia Research | Flexera | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Broken Link |
| oss-security - CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List, Third Party Advisory |
| Linux Kernel CVE-2012-0056 Local Privilege Escalation Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| Bug 782642 – CVE-2012-0056 kernel: proc: /proc/<pid>/mem mem_write insufficient permission checking | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Issue Tracking, Third Party Advisory |
| www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2 | af854a3a-2127-422b-91ae-364da2661108 | www.kernel.org | Vendor Advisory |
| kernel/git/torvalds/linux.git - Linux kernel source tree | af854a3a-2127-422b-91ae-364da2661108 | git.kernel.org | Vendor Advisory |
| VU#470151 - Linux Kernel local privilege escalation via SUID /proc/pid/mem write | af854a3a-2127-422b-91ae-364da2661108 | www.kb.cert.org | Third Party Advisory, US Government Resource |
| Support | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | Third Party Advisory |
| oss-security - Re: CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List, Third Party Advisory |
| Linux Local Privilege Escalation via SUID /proc/pid/mem Write | Nerdling Sapple | af854a3a-2127-422b-91ae-364da2661108 | blog.zx2c4.com | Third Party Advisory |
| oss-security - Re: CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List, Third Party Advisory |
| USN-1336-1: Linux kernel vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | ubuntu.com | Third Party Advisory |
| Support | af854a3a-2127-422b-91ae-364da2661108 | www.redhat.com | Third Party Advisory |
| kernel/git/torvalds/linux.git - Linux kernel source tree | MITRE | git.kernel.org | |
| Red Hat Customer Portal | MITRE | access.redhat.com | |
| Red Hat Customer Portal | MITRE | access.redhat.com | |
| access.redhat.com | CVE-2012-0056 | MITRE | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.