The mem_write function in the Linux kernel before 3.2.2, when ASLR is disabled, does not properly check permissions…
SummaryAI-written · claude-haiku-5-5AI-written · claude-haiku-5-5Written by a language model from the source data on this page. Not reviewed by a person. Generated 23 Oct 2026.
The flaw is in the mem_write function of the Linux kernel (versions before 3.2.2), which fails to properly check permissions when writing to /proc/<pid>/mem. An attacker with local access and ASLR disabled can exploit this by modifying process memory to gain elevated privileges, as demonstrated by the Mempodipper technique.
Official description · CVE.orgSource dataSource dataCopied from an authoritative feed: NVD, CVE.org, CISA KEV, FIRST EPSS or MITRE CTID mappings, or labelled by the annotators of a published dataset. Copied from CVE.org.
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.
Priority scorePatchfirst’s 0 to 100 ranking. It adds points for CISA KEV listing, ransomware use, EPSS, threat reports, public exploit code and CVSS. Every CVE page shows the breakdown.Breakdown
64.8 / 100
Exploited
Yes, in VulnCheck KEV
Reports
1
Tactics
0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited the day it was disclosed. Public exploit code (Exploit-DB) was available 15 days before disclosure.
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linked
No ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
What security researchers reported
Named in 1 threat reportMachineMachine-matchedFound by keyword or pattern matching over threat-report text. Not reviewed by a person. Exact CVE id found in the report text.
1 reportMicrosoft
Reports are matched by finding the exact id CVE-2012-0056 in their text; nobody has reviewed the match. One passage is shown per report, at most 320 characters, linked to the original.