CVE-2009-1527 Race condition in n/a

What is CVE-2009-1527?

CVE-2009-1527 is a medium-severity vulnerability in Linux kernel, published on 5 May 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.

Weakness: CWE-362

Which versions are affected by CVE-2009-1527?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2009-1527?

No fix has been published for CVE-2009-1527 yet. Limit exposure of the affected software until one is available.

Is CVE-2009-1527 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-1527 exists.

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-5xgr-5h52-x493.