CVE-2017-1000253 Linux Kernel: memory-safety flaw
In plain words: The program mishandles the memory it uses to keep track of data. A specially made input can scramble that memory. Usually lets an attacker crash the program or run their own code with its permissions.
Confirmed exploited by CISA on · US federal patch deadline Sep 30, 2024
What to do
- Install Linux's security update for Kernel. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic updates for the operating system and for Office, PDF and archive apps.
- Be careful with unexpected attachments — documents, .zip/.rar files and shortcuts are common bait.
- Use a normal (non-admin) account day to day and keep built-in protection like Microsoft Defender on.
Who is affected
Could reach you. Used in ransomware, which spreads to ordinary people and small businesses.
What's at risk: Your files, saved passwords and accounts. Many of these let a program that is already running gain full administrator control.
The details
- Official name
- Linux Kernel PIE Stack Buffer Corruption Vulnerability
- Product
- Linux Kernel
- CISA description
- Linux kernel contains a position-independent executable (PIE) stack buffer corruption vulnerability in load_elf_ binary() that allows a local attacker to escalate privileges.
- Type of flaw
- Memory-safety flaw (CWE-119)
- Confirmed exploited
- Sep 9, 2024 — known to be used in ransomware attacks
- US federal patch deadline
- Sep 30, 2024
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Answering about CVE-2017-1000253 ·
Questions about CVE-2017-1000253
Is CVE-2017-1000253 being exploited?
Yes. CISA added CVE-2017-1000253 to its Known Exploited Vulnerabilities catalog on Sep 9, 2024, which means there is reliable evidence of real-world attacks, including by ransomware groups.
How do I fix CVE-2017-1000253?
Install Linux's security update for Kernel. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic updates for the operating system and for Office, PDF and archive apps.
Am I affected by CVE-2017-1000253?
Only if you use Linux Kernel. Used in ransomware, which spreads to ordinary people and small businesses.