Messages in this thread Patch in this message | | | Date | Mon, 27 Feb 2006 14:32:18 -0800 | From | Chris Wright <> | Subject | [patch 18/39] [PATCH] sys_mbind sanity checking |
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-stable review patch. If anyone has any objections, please let us know. ------------------
Make sure maxnodes is safe size before calculating nlongs in get_nodes().
Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> [chrisw: fix units, pointed out by Andi] Cc: Andi Kleen <ak@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> ---
mm/mempolicy.c | 2 ++ 1 files changed, 2 insertions(+)
--- linux-2.6.15.4.orig/mm/mempolicy.c +++ linux-2.6.15.4/mm/mempolicy.c @@ -524,6 +524,8 @@ static int get_nodes(nodemask_t *nodes, nodes_clear(*nodes); if (maxnode == 0 || !nmask) return 0; + if (maxnode > PAGE_SIZE*BITS_PER_BYTE) + return -EINVAL; nlongs = BITS_TO_LONGS(maxnode); if ((maxnode % BITS_PER_LONG) == 0) -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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