CVE-2009-1527

Severity: medium (CVSS 6.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-05-05 · updated 2026-06-16
Weakness: CWE-362

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.

Affected products

Linux kernel: through 2.6.29; 2.6.30, 2.6.30-rc1, 2.6.30-rc2, 2.6.30-rc3

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cad81bc2529ab8c62b6fdc83a1c0c7f4a87209eb
http://secunia.com/advisories/34977
http://secunia.com/advisories/35120
http://wiki.rpath.com/Advisories:rPSA-2009-0084
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.30-rc4
http://www.openwall.com/lists/oss-security/2009/05/04/2
http://www.osvdb.org/54188
http://www.securityfocus.com/archive/1/503610/100/0/threaded
http://www.securityfocus.com/bid/34799
http://www.vupen.com/english/advisories/2009/1236
https://exchange.xforce.ibmcloud.com/vulnerabilities/50293
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cad81bc2529ab8c62b6fdc83a1c0c7f4a87209eb

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