This is a note to let you know that I've just added the patch titled PCI: Prevent out of bounds access in numa_node override to the 4.3-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: pci-prevent-out-of-bounds-access-in-numa_node-override.patch and it can be found in the queue-4.3 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 3dcc8d39cf15fa3ceabedcffcbd3958fe953555a Mon Sep 17 00:00:00 2001 From: Mathias Krause <minipli@xxxxxxxxxxxxxx> Date: Mon, 9 Nov 2015 20:00:27 +0100 Subject: PCI: Prevent out of bounds access in numa_node override From: Mathias Krause <minipli@xxxxxxxxxxxxxx> commit 3dcc8d39cf15fa3ceabedcffcbd3958fe953555a upstream. Commit 1266963170f5 ("PCI: Prevent out of bounds access in numa_node override") missed that the user-provided node could also be negative. Handle this case as well to avoid out-of-bounds accesses to the node_states[] array. However, allow the special value -1, i.e. NUMA_NO_NODE, to be able to set the 'no specific node' configuration. Fixes: 1266963170f5 ("PCI: Prevent out of bounds access in numa_node override") Fixes: 63692df103e9 ("PCI: Allow numa_node override via sysfs") Signed-off-by: Mathias Krause <minipli@xxxxxxxxxxxxxx> Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> CC: Sasha Levin <sasha.levin@xxxxxxxxxx> CC: Prarit Bhargava <prarit@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/pci/pci-sysfs.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -216,7 +216,10 @@ static ssize_t numa_node_store(struct de if (ret) return ret; - if (node >= MAX_NUMNODES || !node_online(node)) + if ((node < 0 && node != NUMA_NO_NODE) || node >= MAX_NUMNODES) + return -EINVAL; + + if (node != NUMA_NO_NODE && !node_online(node)) return -EINVAL; add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_STILL_OK); Patches currently in stable-queue which might be from minipli@xxxxxxxxxxxxxx are queue-4.3/printk-prevent-userland-from-spoofing-kernel-messages.patch queue-4.3/pci-prevent-out-of-bounds-access-in-numa_node-override.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html