What is CVE-2009-1527?

CVE-2009-1527 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.9 out of 10, classified as a Race Condition flaw (CWE-362). CVE-2009-1527 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-1527?

CVE-2009-1527 has a CVSS score of 6.9 out of 10, rated Medium severity. The vector string is AV:L/AC:M/Au:N/C:C/I:C/A:C.

Is there a patch available for CVE-2009-1527?

No patch is currently available for CVE-2009-1527. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2009-1527 actively exploited?

CVE-2009-1527 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2009-1527

Medium

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.

Package Linux Kernel

Published 2009-05-05

Last modified 2026-04-23

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

6.9

out of 10

Medium

Attack Vector

Local

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Vector string

AV:L/AC:M/Au:N/C:C/I:C/A:C

Weakness type

CWE-362

CVE-2009-1527 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2009-1527 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Secunia
http://secunia.com/advisories/34977

Broken Link
Secunia
http://secunia.com/advisories/35120

Broken Link
Wiki
http://wiki.rpath.com/Advisories:rPSA-2009-0084

Broken Link
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.30-rc4

Broken Link
Openwall
http://www.openwall.com/lists/oss-security/2009/05/04/2

Mailing List Third Party Advisory
Osvdb
http://www.osvdb.org/54188

Broken Link
Securityfocus
http://www.securityfocus.com/archive/1/503610/100/0/threaded

Third Party Advisory VDB Entry
Securityfocus
http://www.securityfocus.com/bid/34799

Third Party Advisory VDB Entry
Vupen
http://www.vupen.com/english/advisories/2009/1236

Not Applicable
Exchange
https://exchange.xforce.ibmcloud.com/vulnerabilities/50293

Third Party Advisory VDB Entry
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cad81bc2529ab8c62b6fdc83a1c0c7f4a87209eb
Patch

Details

CVE ID CVE-2009-1527

Severity Medium

CVSS score 6.9 / 10

CVSS version 2.0

Published 2009-05-05

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-1527?

CVE-2009-1527 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.9 out of 10 , classified as a Race Condition flaw (CWE-362) . CVE-2009-1527 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-1527?

CVE-2009-1527 has a CVSS score of 6.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:M/Au:N/C:C/I:C/A:C.
Is there a patch available for CVE-2009-1527?

No patch is currently available for CVE-2009-1527. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2009-1527 actively exploited?

No — CVE-2009-1527 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. View CWE-362 on MITRE CWE →