CVE-2009-3624

Linux Kernel < 2.6.32 - Privilege Escalation via KEYS Subsystem Reference Count Mismanagement

Title source: llm

Description

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.

References (9)

Core 9

Core References

Patch x_refsource_confirm

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=21279cfa107af07ef985539ac0de2152b9cba5f5

Mailing List mailing-list x_refsource_mlist

http://marc.info/?l=oss-security&m=125619420905341&w=2

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/usn-864-1

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html

Various Sources x_refsource_misc

http://twitter.com/spendergrsec/statuses/4916661870

Vendor Advisory x_refsource_confirm

http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc5

Mailing List mailing-list x_refsource_mlist

http://marc.info/?l=oss-security&m=125624091417161&w=2

Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/37086

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/38017

Scores

EPSS 0.0037

EPSS Percentile 30.1%

Details

CWE

CWE-310

Status published

Products (50)

linux/kernel 2.6.24.7

linux/kernel 2.6.25.15

linux/linux_kernel 2.6

linux/linux_kernel 2.6.0

linux/linux_kernel 2.6.1

linux/linux_kernel 2.6.2

linux/linux_kernel 2.6.2.27.13

linux/linux_kernel 2.6.3

linux/linux_kernel 2.6.4

linux/linux_kernel 2.6.5

... and 40 more

Published Nov 02, 2009

Tracked Since Feb 18, 2026