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kdumpid
kdumpid-x86-out-of-bounds-disas.patch
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File kdumpid-x86-out-of-bounds-disas.patch of Package kdumpid
Date: Tue Nov 4 00:15:37 2014 +0100 From: Petr Tesarik <petr@tesarici.cz> Subject: x86: Prevent out-of-bounds reads in disas_at() Patch-mainline: v1.1 Git-commit: a6baa2d02f125fd76f4ece14bea9d922e19b10e3 Since the buffer_vma is already subtracted from the target address, the condition should simply check that a is within the target page. Signed-off-by: Petr Tesarik <petr@tesarici.cz> --- x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/x86.c +++ b/x86.c @@ -171,7 +171,7 @@ disas_at(struct dump_desc *dd, struct di int cont = strncmp(insn, "jmp", 3); a -= info->buffer_vma; - if (a < info->buffer_vma + dd->page_size) { + if (a < dd->page_size) { priv->initstate = state; ++priv->initstate.depth; if (disas_at(dd, info, a) > 0)
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