Description of problem: Fix numerous padding memleaks. Missing initialization in dumped data http://git.kernel.org/linus/9ef1d4c7c7aca1cd436612b6ca785b726ffb8ed8 Clear padding in netlink messages http://git.kernel.org/linus/b3563c4fbff906991a1b4ef4609f99cca2a0de6a Missing padding fields in dumped structures http://git.kernel.org/linus/8a47077a0b5aa2649751c46e7a27884e6686ccbf
Also fixed in 2.4: http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git;a=commit;h=0f3f2328f63c521fe4b435f148687452f98b2349 http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git;a=commit;h=3408cce0c2f380884070896420ca566704452fb5 http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git;a=commit;h=30e744716c4a6cc4e8ecaaddf68f20057c03dc8d
MITRE's CVE-2005-4881 record: ----------------------------- The netlink subsystem in the Linux kernel 2.4.x before 2.4.37.6 and 2.6.x before 2.6.13-rc1 does not initialize certain padding fields in structures, which might allow local users to obtain sensitive information from kernel memory via unspecified vectors, related to the (1) tc_fill_qdisc, (2) tcf_fill_node, (3) neightbl_fill_info, (4) neightbl_fill_param_info, (5) neigh_fill_info, (6) rtnetlink_fill_ifinfo, (7) rtnetlink_fill_iwinfo, (8) vif_delete, (9) ipmr_destroy_unres, (10) ipmr_cache_alloc_unres, (11) ipmr_cache_resolve, (12) inet6_fill_ifinfo, (13) tca_get_fill, (14) tca_action_flush, (15) tcf_add_notify, (16) tc_dump_action, (17) cbq_dump_police, (18) __nlmsg_put, (19) __rta_fill, (20) __rta_reserve, (21) inet6_fill_prefix, (22) rsvp_dump, and (23) cbq_dump_ovl functions. References: ----------- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git;a=commit;h=0f3f2328f63c521fe4b435f148687452f98b2349 http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git;a=commit;h=30e744716c4a6cc4e8ecaaddf68f20057c03dc8d http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git;a=commit;h=3408cce0c2f380884070896420ca566704452fb5 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8a47077a0b5aa2649751c46e7a27884e6686ccbf http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9ef1d4c7c7aca1cd436612b6ca785b726ffb8ed8 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b3563c4fbff906991a1b4ef4609f99cca2a0de6a http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.37.6 http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.13/ChangeLog-2.6.13-rc1
This issue has been addressed in following products: Red Hat Enterprise Linux 4 Via RHSA-2009:1522 https://rhn.redhat.com/errata/RHSA-2009-1522.html