Date: Thu, 17 Sep 2009 06:25:15 +0200 From: Willy Tarreau <w@....eu> To: "Steven M. Christey" <coley@...us.mitre.org> Cc: oss-security@...ts.openwall.com, Eugene Teo <eugene@...hat.com> Subject: Re: CVE request: kernel: tc: uninitialised kernel memory leak Hi Steven, On Wed, Sep 16, 2009 at 09:19:02PM -0400, Steven M. Christey wrote: (...) > One question, though - http://patchwork.ozlabs.org/patch/32830/ patches > net/sched/sch_api.c / tc_fill_tclass, but the 2005 patch includes > net/core/neighbour.c, net/sched/cls_api.c, and others. > > So we have: > > tc_fill_qdisc() - already fixed in 2.6; just fixed in 2.4 > > http://marc.info/?l=git-commits-head&m=112002138324380 > (not sure of reference for 2.4) > > multiple functions e.g. tcf_fill_node() already fixed in 2.6; unknown > status in 2.4. Includes neightbl_fill_info(), neightbl_fill_param_info(), > and others. > > http://marc.info/?l=git-commits-head&m=112002138324380 This one is here in 2.4 : http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git;a=commitdiff;h=0f3f2328f63c521fe4b435f148687452f98b2349 > tc_fill_tclass() - just fixed in 2.6 > > http://patchwork.ozlabs.org/patch/32830/ > > > So for now, we have: > > CVE-2009-3228 - tc_fill_tclass() Here in 2.4 : http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git;a=commitdiff;h=096ed17f20affc2db0e307658c69b67433992a7a > CVE-2005-4881 - tc_fill_qdisc() (at least) in 2.4, was fixed with the other one above from 2005 (0f3f23). > Now we have: > > tcf_fill_node(), neightbl_fill_info(), and others from 2005. > > Typical practice would be to associate tcf_fill_node() and the others with > CVE-2005-4881, not just have it be with tc_fill_qdisc() - because they > were all disclosed in 2005. Then the 2.4 fix might only apply to a > portion of CVE-2005-4881. This could make it difficult to coordinate > low-level patches, but our "(1)" and "(2)" numbering style in the CVE > description could be used at that level if needed. > > So, let's go with these two numbers. I'll fill them out later. (My head > hurts.) > > Oh, and if anybody could give me more precise version information than > "2.4" and "2.6" then that would be appreciated. OK, for 2.4, all the issues mentionned here were fixed in 188.8.131.52 and present up to 184.108.40.206. In 2.6 now : - tc_fill_tclass was fixed in 2.6.31-rc9 (commit 16ebb5e0) - neightbl_fill_info, tcf_fill_node, tc_fill_qdisc... in 2.6.13-rc1 (commit 9ef1d4c7) > P.S. I chose the 2005 date in the CVE to help with distinguishing the > problems, but arguably this should have received a 2009, because the 2005 > fix was so vague that the security implications weren't (apparently) known > until 2009. OK, thanks Steven. Willy
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