CVE-2013-2596
Published: September 15, 2022
Official Description
Linux kernel fb_mmap function in drivers/video/fbmem.c contains an integer overflow vulnerability that allows for privilege escalation.
CISA KEV Advisory
Linux Kernel Integer Overflow Vulnerability
Linux kernel fb_mmap function in drivers/video/fbmem.c contains an integer overflow vulnerability that allows for privilege escalation.
Apply updates per vendor instructions.
Risk Analysis
This high-severity integer overflow vulnerability in the Linux kernel's fb_mmap function allows for privilege escalation. Although no CVSS score is provided, its presence in CISA's KEV catalog and an EPSS score of 0.02696 confirm active exploitation, making it a critical issue.
This vulnerability is actively exploited in the wild and is listed in CISA's KEV catalog. Exploitation requires local access to the system.
Update the Linux kernel to a patched version to address the integer overflow. Regularly apply security updates to all Linux systems.
Technical Analysis
CVE-2013-2596 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2013-2596 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2013-2596 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1