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CVE-2009-3624

Date: November 2, 2009

The get_instantiation_keyring function in security/keys/keyctl.c in the KEYS subsystem in the Linux kernel before 2.6.32-rc5 does not properly maintain the reference count of a keyring, which allows local users to gain privileges or cause a denial of service (OOPS) via vectors involving calls to this function without specifying a keyring by ID, as demonstrated by a series of keyctl request2 and keyctl list commands.

Language: C

Severity Score

Related Resources (12)

http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
http://marc.info/?l=oss-security&m=125624091417161&w=2
http://marc.info/?l=oss-security&m=125619420905341&w=2
http://www.ubuntu.com/usn/usn-864-1
http://secunia.com/advisories/37086
https://people.canonical.com/~ubuntu-security/cve/CVE-2009-3624
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc5
https://nvd.nist.gov/vuln/detail/CVE-2009-3624
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=21279cfa107af07ef985539ac0de2152b9cba5f5
http://twitter.com/spendergrsec/statuses/4916661870
http://secunia.com/advisories/38017
https://www.mend.io/vulnerability-database/CVE-2009-3624

Severity Score

Weakness Type (CWE)

Cryptographic Issues

CWE-310

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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