Race condition in the find_keyring_by_name function in security/keys/keyring.c in the...

Vulnerability Description

Race condition in the find_keyring_by_name function in security/keys/keyring.c in the Linux kernel 2.6.34-rc5 and earlier allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via keyctl session commands that trigger access to a dead keyring that is undergoing deletion by the key_cleanup function.

References

• http://www.openwall.com/lists/oss-security/2010/04/27/2
• http://lists.opensuse.org/opensuse-security-announce/2010-07/msg00006.html
• http://marc.info/?l=linux-kernel&m=127292492727029&w=2
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9715
• https://patchwork.kernel.org/patch/94664/
• https://exchange.xforce.ibmcloud.com/vulnerabilities/58254
• http://marc.info/?l=linux-kernel&m=127192182917857&w=2
• http://www.redhat.com/support/errata/RHSA-2010-0474.html
• http://secunia.com/advisories/40645
• http://secunia.com/advisories/43315
• http://marc.info/?l=linux-kernel&m=127274294622730&w=2
• https://patchwork.kernel.org/patch/94038/
• http://www.openwall.com/lists/oss-security/2010/04/28/2
• http://secunia.com/advisories/40218
• http://www.vmware.com/security/advisories/VMSA-2011-0003.html
• https://bugzilla.redhat.com/show_bug.cgi?id=585094
• http://www.debian.org/security/2010/dsa-2053
• http://www.securityfocus.com/bid/39719
• http://www.securityfocus.com/archive/1/516397/100/0/threaded
• http://secunia.com/advisories/39830
• http://www.vupen.com/english/advisories/2010/1857