The do_coredump function in fs/exec.c in Linux kernel 2.4.x and 2.6.x up to 2.6.24-rc3, and possibly other versions, does not change the UID of a core dump file if it exists before a root process creates a core dump in the same location, which might allow local users to obtain sensitive information.
bugzilla.kernel.org/show_bug.cgi?id=3043
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=c46f739dd39db3b07ab5deb4e3ec81e1c04a91af
lists.opensuse.org/opensuse-security-announce/2008-02/msg00005.html
lists.opensuse.org/opensuse-security-announce/2008-06/msg00006.html
lists.opensuse.org/opensuse-security-announce/2008-07/msg00002.html
lists.vmware.com/pipermail/security-announce/2008/000023.html
rhn.redhat.com/errata/RHSA-2008-0055.html
secunia.com/advisories/27908
secunia.com/advisories/28141
secunia.com/advisories/28643
secunia.com/advisories/28706
secunia.com/advisories/28748
secunia.com/advisories/28826
secunia.com/advisories/28889
secunia.com/advisories/28971
secunia.com/advisories/29058
secunia.com/advisories/30110
secunia.com/advisories/30818
secunia.com/advisories/30962
secunia.com/advisories/31246
secunia.com/advisories/33280
wiki.rpath.com/wiki/Advisories:rPSA-2008-0048
www.debian.org/security/2007/dsa-1436
www.debian.org/security/2008/dsa-1503
www.debian.org/security/2008/dsa-1504
www.mandriva.com/security/advisories?name=MDVSA-2008:044
www.mandriva.com/security/advisories?name=MDVSA-2008:086
www.mandriva.com/security/advisories?name=MDVSA-2008:112
www.redhat.com/support/errata/RHSA-2008-0089.html
www.redhat.com/support/errata/RHSA-2008-0211.html
www.redhat.com/support/errata/RHSA-2008-0787.html
www.securityfocus.com/archive/1/487808/100/0/threaded
www.securityfocus.com/bid/26701
www.ubuntu.com/usn/usn-574-1
www.ubuntu.com/usn/usn-578-1
www.vupen.com/english/advisories/2007/4090
www.vupen.com/english/advisories/2008/2222/references
exchange.xforce.ibmcloud.com/vulnerabilities/38841
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10719