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Red Hat Bugzilla – Attachment 314606 Details for
Bug 459226
CVE-2008-3276 Linux kernel dccp_setsockopt_change() integer overflow
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[patch]
Proposed backported patch for MRG kernel
patch (text/plain), 750 bytes, created by
Eugene Teo (Security Response)
on 2008-08-20 04:07:07 UTC
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Description:
Proposed backported patch for MRG kernel
Filename:
MIME Type:
Creator:
Eugene Teo (Security Response)
Created:
2008-08-20 04:07:07 UTC
Size:
750 bytes
patch
obsolete
>dccp: change L/R must have at least one byte in the dccpsf_val field > >This is CVE-2008-3276 > >Signed-off-by: Eugene Teo <eteo@redhat.com> >--- > net/dccp/proto.c | 5 +++++ > 1 file changed, 5 insertions(+) > >diff -uprN linux-2.6.24.7.noarch.default/net/dccp/proto.c linux-2.6.24.7.noarch/net/dccp/proto.c >--- linux-2.6.24.7.noarch.default/net/dccp/proto.c 2008-01-24 17:58:37.000000000 -0500 >+++ linux-2.6.24.7.noarch/net/dccp/proto.c 2008-08-20 00:00:22.453458000 -0400 >@@ -458,6 +458,11 @@ static int dccp_setsockopt_change(struct > > if (copy_from_user(&opt, optval, sizeof(opt))) > return -EFAULT; >+ /* >+ * rfc4340: 6.1. Change Options >+ */ >+ if (opt.dccpsf_len < 1) >+ return -EINVAL; > > val = kmalloc(opt.dccpsf_len, GFP_KERNEL); > if (!val)
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