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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.
Description Last Modified:
Access Vector (AV):
Access Complexity (AC):
Allows unauthorized disclosure of informationAllows unauthorized modificationAllows disruption of service
Not vulnerable. This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, 5, or Red Hat Enterprise MRG. Those versions do not include the upstream patch that introduced this vulnerability.
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