Subject: + block-do-not-pass-disk-names-as-format-strings.patch added to -mm
tree
To: [email protected],[email protected],[email protected]
From: [email protected]
Date: Tue, 11 Jun 2013 13:11:50 -0700
The patch titled
Subject: block: do not pass disk names as format strings
has been added to the -mm tree. Its filename is
block-do-not-pass-disk-names-as-format-strings.patch
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------------------------------------------------------
From: Kees Cook <[email protected]>
Subject: block: do not pass disk names as format strings
Disk names may contain arbitrary strings, so they must not be interpreted
as format strings. It seems that only md allows arbitrary strings to be
used for disk names, but this could allow for a local memory corruption
from uid 0 into ring 0.
CVE-2013-2851
Signed-off-by: Kees Cook <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
block/genhd.c | 2 +-
drivers/block/nbd.c | 3 ++-
drivers/scsi/osd/osd_uld.c | 2 +-
3 files changed, 4 insertions(+), 3 deletions(-)
diff -puN block/genhd.c~block-do-not-pass-disk-names-as-format-strings
block/genhd.c
--- a/block/genhd.c~block-do-not-pass-disk-names-as-format-strings
+++ a/block/genhd.c
@@ -512,7 +512,7 @@ static void register_disk(struct gendisk
ddev->parent = disk->driverfs_dev;
- dev_set_name(ddev, disk->disk_name);
+ dev_set_name(ddev, "%s", disk->disk_name);
/* delay uevents, until we scanned partition table */
dev_set_uevent_suppress(ddev, 1);
diff -puN drivers/block/nbd.c~block-do-not-pass-disk-names-as-format-strings
drivers/block/nbd.c
--- a/drivers/block/nbd.c~block-do-not-pass-disk-names-as-format-strings
+++ a/drivers/block/nbd.c
@@ -714,7 +714,8 @@ static int __nbd_ioctl(struct block_devi
else
blk_queue_flush(nbd->disk->queue, 0);
- thread = kthread_create(nbd_thread, nbd, nbd->disk->disk_name);
+ thread = kthread_create(nbd_thread, nbd, "%s",
+ nbd->disk->disk_name);
if (IS_ERR(thread)) {
mutex_lock(&nbd->tx_lock);
return PTR_ERR(thread);
diff -puN
drivers/scsi/osd/osd_uld.c~block-do-not-pass-disk-names-as-format-strings
drivers/scsi/osd/osd_uld.c
--- a/drivers/scsi/osd/osd_uld.c~block-do-not-pass-disk-names-as-format-strings
+++ a/drivers/scsi/osd/osd_uld.c
@@ -485,7 +485,7 @@ static int osd_probe(struct device *dev)
oud->class_dev.class = &osd_uld_class;
oud->class_dev.parent = dev;
oud->class_dev.release = __remove;
- error = dev_set_name(&oud->class_dev, disk->disk_name);
+ error = dev_set_name(&oud->class_dev, "%s", disk->disk_name);
if (error) {
OSD_ERR("dev_set_name failed => %d\n", error);
goto err_put_cdev;
_
Patches currently in -mm which might be from [email protected] are
linux-next.patch
kmsg-honor-dmesg_restrict-sysctl-on-dev-kmsg.patch
kmsg-honor-dmesg_restrict-sysctl-on-dev-kmsg-fix.patch
drivers-mtd-chips-gen_probec-refactor-call-to-request_module.patch
clean-up-scary-strncpydst-src-strlensrc-uses.patch
clean-up-scary-strncpydst-src-strlensrc-uses-fix.patch
binfmt_elfc-use-get_random_int-to-fix-entropy-depleting.patch
documentation-accounting-getdelaysc-avoid-strncpy-in-accounting-tool.patch
documentation-accounting-getdelaysc-avoid-strncpy-in-accounting-tool-fix.patch
block-do-not-pass-disk-names-as-format-strings.patch
crypto-sanitize-argument-for-format-string.patch
drivers-avoid-format-string-in-dev_set_name.patch
drivers-avoid-format-strings-in-names-passed-to-alloc_workqueue.patch
drivers-avoid-parsing-names-as-kthread_run-format-strings.patch
isdn-clean-up-debug-format-string-usage.patch
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