CVE-2014-1737
** Also affects: linux (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux-fsl-imx51 (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux-mvl-dove (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux-ec2 (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux-ti-omap4 (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-maverick (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-natty (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux-fsl-imx51 (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux-mvl-dove (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux-ec2 (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux-ti-omap4 (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-maverick (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-natty (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Saucy)
Importance: Undecided
Status: New
** Also affects: linux-fsl-imx51 (Ubuntu Saucy)
Importance: Undecided
Status: New
** Also affects: linux-mvl-dove (Ubuntu Saucy)
Importance: Undecided
Status: New
** Also affects: linux-ec2 (Ubuntu Saucy)
Importance: Undecided
Status: New
** Also affects: linux-ti-omap4 (Ubuntu Saucy)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-maverick (Ubuntu Saucy)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-natty (Ubuntu Saucy)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Quantal)
Importance: Undecided
Status: New
** Also affects: linux-fsl-imx51 (Ubuntu Quantal)
Importance: Undecided
Status: New
** Also affects: linux-mvl-dove (Ubuntu Quantal)
Importance: Undecided
Status: New
** Also affects: linux-ec2 (Ubuntu Quantal)
Importance: Undecided
Status: New
** Also affects: linux-ti-omap4 (Ubuntu Quantal)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-maverick (Ubuntu Quantal)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-natty (Ubuntu Quantal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: linux-fsl-imx51 (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: linux-mvl-dove (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: linux-ec2 (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: linux-ti-omap4 (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-maverick (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-natty (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Lucid)
Importance: Undecided
Status: New
** Also affects: linux-fsl-imx51 (Ubuntu Lucid)
Importance: Undecided
Status: New
** Also affects: linux-mvl-dove (Ubuntu Lucid)
Importance: Undecided
Status: New
** Also affects: linux-ec2 (Ubuntu Lucid)
Importance: Undecided
Status: New
** Also affects: linux-ti-omap4 (Ubuntu Lucid)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-maverick (Ubuntu Lucid)
Importance: Undecided
Status: New
** Also affects: linux-lts-backport-natty (Ubuntu Lucid)
Importance: Undecided
Status: New
** Changed in: linux-armadaxp (Ubuntu Saucy)
Status: New => Invalid
** Changed in: linux-armadaxp (Ubuntu Trusty)
Status: New => Invalid
** Changed in: linux-armadaxp (Ubuntu Lucid)
Status: New => Invalid
** Changed in: linux-armadaxp (Ubuntu Utopic)
Status: New => Invalid
** Changed in: linux-ec2 (Ubuntu Precise)
Status: New => Invalid
** Changed in: linux-ec2 (Ubuntu Saucy)
Status: New => Invalid
** Changed in: linux-ec2 (Ubuntu Trusty)
Status: New => Invalid
** Changed in: linux-ec2 (Ubuntu Utopic)
Status: New => Invalid
** Changed in: linux-ec2 (Ubuntu Quantal)
Status: New => Invalid
** Changed in: linux-lts-quantal (Ubuntu Saucy)
Status: New => Invalid
** Changed in: linux-lts-quantal (Ubuntu Trusty)
Status: New => Invalid
** Changed in: linux-lts-quantal (Ubuntu Lucid)
Status: New => Invalid
** Changed in: linux-lts-quantal (Ubuntu Utopic)
Status: New => Invalid
** Changed in: linux-lts-quantal (Ubuntu Quantal)
Status: New => Invalid
** Changed in: linux-mvl-dove (Ubuntu Precise)
Status: New => Invalid
** Changed in: linux-mvl-dove (Ubuntu Saucy)
Status: New => Invalid
** Changed in: linux-mvl-dove (Ubuntu Trusty)
Status: New => Invalid
** Changed in: linux-mvl-dove (Ubuntu Utopic)
Status: New => Invalid
** Changed in: linux-mvl-dove (Ubuntu Quantal)
Status: New => Invalid
** Changed in: linux-lts-saucy (Ubuntu Saucy)
Status: New => Invalid
** Changed in: linux-lts-saucy (Ubuntu Trusty)
Status: New => Invalid
** Changed in: linux-lts-saucy (Ubuntu Lucid)
Status: New => Invalid
** Changed in: linux-lts-saucy (Ubuntu Utopic)
Status: New => Invalid
** Changed in: linux-lts-saucy (Ubuntu Quantal)
Status: New => Invalid
** Changed in: linux-ti-omap4 (Ubuntu Trusty)
Status: New => Invalid
** Changed in: linux-ti-omap4 (Ubuntu Lucid)
Status: New => Invalid
** Changed in: linux-ti-omap4 (Ubuntu Utopic)
Status: New => Invalid
** Changed in: linux-fsl-imx51 (Ubuntu Precise)
Status: New => Invalid
** Changed in: linux-fsl-imx51 (Ubuntu Saucy)
Status: New => Invalid
** Changed in: linux-fsl-imx51 (Ubuntu Trusty)
Status: New => Invalid
** Changed in: linux-fsl-imx51 (Ubuntu Utopic)
Status: New => Invalid
** Changed in: linux-fsl-imx51 (Ubuntu Quantal)
Status: New => Invalid
** Changed in: linux-lts-raring (Ubuntu Saucy)
Status: New => Invalid
** Changed in: linux-lts-raring (Ubuntu Trusty)
Status: New => Invalid
** Changed in: linux-lts-raring (Ubuntu Lucid)
Status: New => Invalid
** Changed in: linux-lts-raring (Ubuntu Utopic)
Status: New => Invalid
** Changed in: linux-lts-raring (Ubuntu Quantal)
Status: New => Invalid
** Description changed:
- Placeholder
+ The first issue lies in the driver's processing of FDRAWCMD ioctls,
+ specifically in its handling of copying floppy_raw_cmd ioctl argument
+ structures from and to userspace. There are four relevant functions in
+ drivers/block/floppy.c: raw_cmd_{ioctl,copyin,copyout,free}. First,
+ raw_cmd_ioctl calls raw_cmd_copyin. This function kmallocs space for a
+ floppy_raw_cmd structure and stores the resulting allocation in the
+ "rcmd" pointer argument. It then attempts to copy_from_user the
+ structure from userspace. If this fails, an early EFAULT return is
+ taken. The problem is that even if the early return is taken, the
+ pointer to the non-/partially-initialized floppy_raw_cmd structure has
+ already been returned via the "rcmd" pointer. Back out in raw_cmd_ioctl,
+ it attempts to raw_cmd_free this pointer. raw_cmd_free attempts to free
+ any DMA pages allocated for the raw command, kfrees the raw command
+ structure itself, and follows the linked list, if any, of further raw
+ commands (a user can specify the FD_RAW_MORE flag to signal that there
+ are more raw commands to follow in a single FDRAWCMD ioctl). So, a
+ malicious user can send a FDRAWCMD ioctl with a raw command argument
+ structure that has some bytes inaccessible (ie. off the end of an
+ allocated page). The copy_from_user will fail but raw_cmd_free will
+ attempt to process the floppy_raw_cmd as if it had been fully
+ initialized by the rest of raw_cmd_copyin. The user can control the
+ arguments passed to fd_dma_mem_free and kfree (by making use of the
+ linked-list feature and specifying the target address as a next-in-list
+ structure).
+
+ Break-Fix: - ef87dbe7614341c2e7bfe8d32fcb7028cc97442c
** Changed in: linux-armadaxp (Ubuntu Precise)
Importance: Undecided => High
** Changed in: linux-armadaxp (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: linux-armadaxp (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux-armadaxp (Ubuntu Lucid)
Importance: Undecided => High
** Changed in: linux-armadaxp (Ubuntu Utopic)
Importance: Undecided => High
** Changed in: linux-armadaxp (Ubuntu Quantal)
Importance: Undecided => High
** Changed in: linux-ec2 (Ubuntu Precise)
Importance: Undecided => High
** Changed in: linux-ec2 (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: linux-ec2 (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux-ec2 (Ubuntu Lucid)
Importance: Undecided => High
** Changed in: linux-ec2 (Ubuntu Utopic)
Importance: Undecided => High
** Changed in: linux-ec2 (Ubuntu Quantal)
Importance: Undecided => High
** Changed in: linux-lts-quantal (Ubuntu Precise)
Importance: Undecided => High
** Changed in: linux-lts-quantal (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: linux-lts-quantal (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux-lts-quantal (Ubuntu Lucid)
Importance: Undecided => High
** Changed in: linux-lts-quantal (Ubuntu Utopic)
Importance: Undecided => High
** Changed in: linux-lts-quantal (Ubuntu Quantal)
Importance: Undecided => High
** Changed in: linux-mvl-dove (Ubuntu Precise)
Importance: Undecided => High
** Changed in: linux-mvl-dove (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: linux-mvl-dove (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux-mvl-dove (Ubuntu Lucid)
Status: New => Invalid
** Changed in: linux-mvl-dove (Ubuntu Lucid)
Importance: Undecided => High
** Changed in: linux-mvl-dove (Ubuntu Utopic)
Importance: Undecided => High
** Changed in: linux-mvl-dove (Ubuntu Quantal)
Importance: Undecided => High
** Changed in: linux-lts-saucy (Ubuntu Precise)
Importance: Undecided => High
** Changed in: linux-lts-saucy (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: linux-lts-saucy (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux-lts-saucy (Ubuntu Lucid)
Importance: Undecided => High
** Changed in: linux-lts-saucy (Ubuntu Utopic)
Importance: Undecided => High
** Changed in: linux-lts-saucy (Ubuntu Quantal)
Importance: Undecided => High
** Changed in: linux (Ubuntu Precise)
Importance: Undecided => High
** Changed in: linux (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: linux (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux (Ubuntu Lucid)
Importance: Undecided => High
** Changed in: linux (Ubuntu Utopic)
Importance: Undecided => High
** Changed in: linux (Ubuntu Quantal)
Importance: Undecided => High
** Changed in: linux-ti-omap4 (Ubuntu Precise)
Importance: Undecided => High
** Changed in: linux-ti-omap4 (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: linux-ti-omap4 (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux-ti-omap4 (Ubuntu Lucid)
Importance: Undecided => High
** Changed in: linux-ti-omap4 (Ubuntu Utopic)
Importance: Undecided => High
** Changed in: linux-ti-omap4 (Ubuntu Quantal)
Importance: Undecided => High
** Changed in: linux-fsl-imx51 (Ubuntu Precise)
Importance: Undecided => High
** Changed in: linux-fsl-imx51 (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: linux-fsl-imx51 (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux-fsl-imx51 (Ubuntu Lucid)
Status: New => Invalid
** Changed in: linux-fsl-imx51 (Ubuntu Lucid)
Importance: Undecided => High
** Changed in: linux-fsl-imx51 (Ubuntu Utopic)
Importance: Undecided => High
** Changed in: linux-fsl-imx51 (Ubuntu Quantal)
Importance: Undecided => High
** Changed in: linux-lts-raring (Ubuntu Precise)
Importance: Undecided => High
** Changed in: linux-lts-raring (Ubuntu Saucy)
Importance: Undecided => High
** Changed in: linux-lts-raring (Ubuntu Trusty)
Importance: Undecided => High
** Changed in: linux-lts-raring (Ubuntu Lucid)
Importance: Undecided => High
** Changed in: linux-lts-raring (Ubuntu Utopic)
Importance: Undecided => High
** Changed in: linux-lts-raring (Ubuntu Quantal)
Importance: Undecided => High
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1316729
Title:
CVE-2014-1737
Status in “linux” package in Ubuntu:
New
Status in “linux-armadaxp” package in Ubuntu:
Invalid
Status in “linux-ec2” package in Ubuntu:
Invalid
Status in “linux-fsl-imx51” package in Ubuntu:
Invalid
Status in “linux-lts-backport-maverick” package in Ubuntu:
New
Status in “linux-lts-backport-natty” package in Ubuntu:
New
Status in “linux-lts-quantal” package in Ubuntu:
Invalid
Status in “linux-lts-raring” package in Ubuntu:
Invalid
Status in “linux-lts-saucy” package in Ubuntu:
Invalid
Status in “linux-mvl-dove” package in Ubuntu:
Invalid
Status in “linux-ti-omap4” package in Ubuntu:
Invalid
Status in “linux” source package in Lucid:
New
Status in “linux-armadaxp” source package in Lucid:
Invalid
Status in “linux-ec2” source package in Lucid:
New
Status in “linux-fsl-imx51” source package in Lucid:
Invalid
Status in “linux-lts-backport-maverick” source package in Lucid:
New
Status in “linux-lts-backport-natty” source package in Lucid:
New
Status in “linux-lts-quantal” source package in Lucid:
Invalid
Status in “linux-lts-raring” source package in Lucid:
Invalid
Status in “linux-lts-saucy” source package in Lucid:
Invalid
Status in “linux-mvl-dove” source package in Lucid:
Invalid
Status in “linux-ti-omap4” source package in Lucid:
Invalid
Status in “linux” source package in Precise:
New
Status in “linux-armadaxp” source package in Precise:
New
Status in “linux-ec2” source package in Precise:
Invalid
Status in “linux-fsl-imx51” source package in Precise:
Invalid
Status in “linux-lts-backport-maverick” source package in Precise:
New
Status in “linux-lts-backport-natty” source package in Precise:
New
Status in “linux-lts-quantal” source package in Precise:
New
Status in “linux-lts-raring” source package in Precise:
New
Status in “linux-lts-saucy” source package in Precise:
New
Status in “linux-mvl-dove” source package in Precise:
Invalid
Status in “linux-ti-omap4” source package in Precise:
New
Status in “linux” source package in Quantal:
New
Status in “linux-armadaxp” source package in Quantal:
New
Status in “linux-ec2” source package in Quantal:
Invalid
Status in “linux-fsl-imx51” source package in Quantal:
Invalid
Status in “linux-lts-backport-maverick” source package in Quantal:
New
Status in “linux-lts-backport-natty” source package in Quantal:
New
Status in “linux-lts-quantal” source package in Quantal:
Invalid
Status in “linux-lts-raring” source package in Quantal:
Invalid
Status in “linux-lts-saucy” source package in Quantal:
Invalid
Status in “linux-mvl-dove” source package in Quantal:
Invalid
Status in “linux-ti-omap4” source package in Quantal:
New
Status in “linux” source package in Saucy:
New
Status in “linux-armadaxp” source package in Saucy:
Invalid
Status in “linux-ec2” source package in Saucy:
Invalid
Status in “linux-fsl-imx51” source package in Saucy:
Invalid
Status in “linux-lts-backport-maverick” source package in Saucy:
New
Status in “linux-lts-backport-natty” source package in Saucy:
New
Status in “linux-lts-quantal” source package in Saucy:
Invalid
Status in “linux-lts-raring” source package in Saucy:
Invalid
Status in “linux-lts-saucy” source package in Saucy:
Invalid
Status in “linux-mvl-dove” source package in Saucy:
Invalid
Status in “linux-ti-omap4” source package in Saucy:
New
Status in “linux” source package in Trusty:
New
Status in “linux-armadaxp” source package in Trusty:
Invalid
Status in “linux-ec2” source package in Trusty:
Invalid
Status in “linux-fsl-imx51” source package in Trusty:
Invalid
Status in “linux-lts-backport-maverick” source package in Trusty:
New
Status in “linux-lts-backport-natty” source package in Trusty:
New
Status in “linux-lts-quantal” source package in Trusty:
Invalid
Status in “linux-lts-raring” source package in Trusty:
Invalid
Status in “linux-lts-saucy” source package in Trusty:
Invalid
Status in “linux-mvl-dove” source package in Trusty:
Invalid
Status in “linux-ti-omap4” source package in Trusty:
Invalid
Status in “linux” source package in Utopic:
New
Status in “linux-armadaxp” source package in Utopic:
Invalid
Status in “linux-ec2” source package in Utopic:
Invalid
Status in “linux-fsl-imx51” source package in Utopic:
Invalid
Status in “linux-lts-backport-maverick” source package in Utopic:
New
Status in “linux-lts-backport-natty” source package in Utopic:
New
Status in “linux-lts-quantal” source package in Utopic:
Invalid
Status in “linux-lts-raring” source package in Utopic:
Invalid
Status in “linux-lts-saucy” source package in Utopic:
Invalid
Status in “linux-mvl-dove” source package in Utopic:
Invalid
Status in “linux-ti-omap4” source package in Utopic:
Invalid
Bug description:
The first issue lies in the driver's processing of FDRAWCMD ioctls,
specifically in its handling of copying floppy_raw_cmd ioctl argument
structures from and to userspace. There are four relevant functions in
drivers/block/floppy.c: raw_cmd_{ioctl,copyin,copyout,free}. First,
raw_cmd_ioctl calls raw_cmd_copyin. This function kmallocs space for a
floppy_raw_cmd structure and stores the resulting allocation in the
"rcmd" pointer argument. It then attempts to copy_from_user the
structure from userspace. If this fails, an early EFAULT return is
taken. The problem is that even if the early return is taken, the
pointer to the non-/partially-initialized floppy_raw_cmd structure has
already been returned via the "rcmd" pointer. Back out in
raw_cmd_ioctl, it attempts to raw_cmd_free this pointer. raw_cmd_free
attempts to free any DMA pages allocated for the raw command, kfrees
the raw command structure itself, and follows the linked list, if any,
of further raw commands (a user can specify the FD_RAW_MORE flag to
signal that there are more raw commands to follow in a single FDRAWCMD
ioctl). So, a malicious user can send a FDRAWCMD ioctl with a raw
command argument structure that has some bytes inaccessible (ie. off
the end of an allocated page). The copy_from_user will fail but
raw_cmd_free will attempt to process the floppy_raw_cmd as if it had
been fully initialized by the rest of raw_cmd_copyin. The user can
control the arguments passed to fd_dma_mem_free and kfree (by making
use of the linked-list feature and specifying the target address as a
next-in-list structure).
Break-Fix: - ef87dbe7614341c2e7bfe8d32fcb7028cc97442c
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1316729/+subscriptions
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