CVE-2009-3624
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…
Does this matter?
Lower severity and a low EPSS score (0.37%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 4.6 MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 0.37% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-310
- Affected
- linux/kernel · linux/linux kernel
- Source
- secalert@redhat.com
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=21279cfa107af07ef985539ac0de2152b9cba5f5
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
- http://marc.info/?l=oss-security&m=125619420905341&w=2
- http://marc.info/?l=oss-security&m=125624091417161&w=2
- http://secunia.com/advisories/37086Vendor Advisory
- http://secunia.com/advisories/38017
- http://twitter.com/spendergrsec/statuses/4916661870
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc5Vendor Advisory
- http://www.ubuntu.com/usn/usn-864-1
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=21279cfa107af07ef985539ac0de2152b9cba5f5
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
- http://marc.info/?l=oss-security&m=125619420905341&w=2
- http://marc.info/?l=oss-security&m=125624091417161&w=2
- http://secunia.com/advisories/37086Vendor Advisory
- http://secunia.com/advisories/38017
- http://twitter.com/spendergrsec/statuses/4916661870
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc5Vendor Advisory
- http://www.ubuntu.com/usn/usn-864-1
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.