CVE-2011-1020 Information disclosure in n/a

What is CVE-2011-1020?

CVE-2011-1020 is a medium-severity vulnerability in Linux kernel, published on 28 Feb 2011. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the /proc directory tree of a process after this process performs an exec of a setuid program, which allows local users to obtain sensitive information or cause a denial of service via open, lseek, read, and write system calls.

Weakness: CWE-200

Which versions are affected by CVE-2011-1020?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2011-1020?

Apply the vendor's patch.

Is CVE-2011-1020 being exploited?

There is no known exploitation of CVE-2011-1020 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5vjr-66w2-fxv8.