Update to 3.19.1
svn path=/dists/trunk/linux/; revision=22449
This commit is contained in:
Ben Hutchings
parent
c6d983ba6a
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1a12a90d3a
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@ -1,4 +1,72 @@
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linux (3.19-1~exp2) UNRELEASED; urgency=medium
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linux (3.19.1-1~exp1) UNRELEASED; urgency=medium
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* New upstream stable update:
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https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.1
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- Bluetooth: ath3k: workaround the compatibility issue with xHCI controller
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(Closes: #778463)
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- random: Fix fast_mix() function (regression in 3.17)
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- xfs: inode unlink does not set AGI buffer type
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- xfs: set buf types when converting extent formats
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- xfs: set superblock buffer type correctly
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- iwlwifi: mvm: validate tid and sta_id in ba_notif
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- iwlwifi: mvm: fix failure path when power_update fails in add_interface
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(regression in 3.15)
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- HID: i2c-hid: Limit reads to wMaxInputLength bytes for input events
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(regression in 3.19)
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- cpufreq: Set cpufreq_cpu_data to NULL before putting kobject
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- [xen] manage: Fix USB interaction issues when resuming (regression in
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3.17)
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- [xen] xen-scsiback: mark pvscsi frontend request consumed only after last
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read
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- megaraid_sas: endianness related bug fixes and code optimization
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- rc-main: Re-apply filter for no-op protocol change (regression in 3.17)
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- proc/pagemap: walk page tables under pte lock
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- NFS: struct nfs_commit_info.lock must always point to inode->i_lock
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(regression in 3.17)
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- [mips*] asm: asmmacro: Replace "add" instructions with "addu"
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- mm/hugetlb: pmd_huge() returns true for non-present hugepage
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- blk-mq: fix double-free in error path
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- nfs41: .init_read and .init_write can be called with valid pg_lseg
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(regression in 3.15)
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- SUNRPC: NULL utsname dereference on NFS umount during namespace cleanup
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- NFSv4: Ensure we reference the inode for return-on-close in delegreturn
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- NFSv4.1: Fix a kfree() of uninitialised pointers in
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decode_cb_sequence_args
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- sg: fix unkillable I/O wait deadlock with scsi-mq
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- sg: fix EWOULDBLOCK errors with scsi-mq
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- iscsi-target: Drop problematic active_ts_list usage
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- cipso: don't use IPCB() to locate the CIPSO IP option (regression in 3.18)
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- ring-buffer: Do not wake up a splice waiter when page is not full
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(regression in 3.18)
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- tty: Remove warning in tty_lock_slave() (regression in 3.19)
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- tty: Prevent untrappable signals from malicious program
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- USB: fix use-after-free bug in usb_hcd_unlink_urb()
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- [armhf] usb: dwc3: gadget: add missing spin_lock() (regression in 3.19)
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- usb: core: buffer: smallest buffer should start at ARCH_DMA_MINALIGN
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- cdc-acm: add sanity checks
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- ntp: Fixup adjtimex freq validation on 32-bit systems (regression in 3.19)
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- udf: Check length of extended attributes and allocation descriptors
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- [s390*] KVM: forward hrtimer if guest ckc not pending yet
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(regression in 3.17)
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- [s390*] KVM: base hrtimer on a monotonic clock
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- [s390*] KVM: floating irqs: fix user triggerable endless loop
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- [s390*] KVM: avoid memory leaks if __inject_vm() fails
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- gpiolib: of: allow of_gpiochip_find_and_xlate to find more than one chip
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per node (regression in 3.19)
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- sb_edac: Fix detection on SNB machines (regression in 3.18)
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- jffs2: fix handling of corrupted summary length
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- samsung-laptop: Add use_native_backlight quirk, and enable it on some
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models (regression in 3.16)
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- libceph: fix double __remove_osd() problem
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- btrfs: fix leak of path in btrfs_find_item
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- Btrfs: fix fsync data loss after adding hard link to inode
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- blk-throttle: check stats_cpu before reading it from sysfs
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- [x86] efi: Avoid triple faults during EFI mixed mode calls
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- [x86][xen] irq: Fix regression in 3.19
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- Replace ACCESS_ONCE of non-scalar types with READ_ONCE
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- kernel: tighten rules for ACCESS_ONCE
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- [x86] spinlocks/paravirt: Fix memory corruption on unlock
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- quota: Store maximum space limit in bytes
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[ Ben Hutchings ]
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* [armhf] Drop sun7i device tree patches which are included in 3.19
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@ -1,98 +0,0 @@
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From: Hector Marco-Gisbert <hecmargi@upv.es>
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Date: Sat, 14 Feb 2015 09:33:50 -0800
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Subject: ASLR: fix stack randomization on 64-bit systems
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Origin: http://article.gmane.org/gmane.linux.kernel/1888210
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The issue is that the stack for processes is not properly randomized on 64 bit
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architectures due to an integer overflow.
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The affected function is randomize_stack_top() in file "fs/binfmt_elf.c":
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static unsigned long randomize_stack_top(unsigned long stack_top)
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{
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unsigned int random_variable = 0;
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if ((current->flags & PF_RANDOMIZE) &&
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!(current->personality & ADDR_NO_RANDOMIZE)) {
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random_variable = get_random_int() & STACK_RND_MASK;
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random_variable <<= PAGE_SHIFT;
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}
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return PAGE_ALIGN(stack_top) + random_variable;
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return PAGE_ALIGN(stack_top) - random_variable;
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}
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Note that, it declares the "random_variable" variable as "unsigned int". Since
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the result of the shifting operation between STACK_RND_MASK (which is
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0x3fffff on x86_64, 22 bits) and PAGE_SHIFT (which is 12 on x86_64):
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random_variable <<= PAGE_SHIFT;
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then the two leftmost bits are dropped when storing the result in the
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"random_variable". This variable shall be at least 34 bits long to hold the
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(22+12) result.
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These two dropped bits have an impact on the entropy of process stack.
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Concretely, the total stack entropy is reduced by four: from 2^28 to 2^30 (One
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fourth of expected entropy).
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This patch restores back the entropy by correcting the types involved in the
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operations in the functions randomize_stack_top() and stack_maxrandom_size().
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The successful fix can be tested with:
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$ for i in `seq 1 10`; do cat /proc/self/maps | grep stack; done
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7ffeda566000-7ffeda587000 rw-p 00000000 00:00 0 [stack]
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7fff5a332000-7fff5a353000 rw-p 00000000 00:00 0 [stack]
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7ffcdb7a1000-7ffcdb7c2000 rw-p 00000000 00:00 0 [stack]
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7ffd5e2c4000-7ffd5e2e5000 rw-p 00000000 00:00 0 [stack]
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...
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Once corrected, the leading bytes should be between 7ffc and 7fff, rather
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than always being 7fff.
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CVE-2015-1593
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Signed-off-by: Hector Marco-Gisbert <hecmargi@upv.es>
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Signed-off-by: Ismael Ripoll <iripoll@upv.es>
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[kees: rebase, fix 80 char, clean up commit message, add test example, cve]
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Signed-off-by: Kees Cook <keescook@chromium.org>
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Cc: stable@vger.kernel.org
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---
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arch/x86/mm/mmap.c | 6 +++---
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fs/binfmt_elf.c | 5 +++--
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2 files changed, 6 insertions(+), 5 deletions(-)
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--- a/arch/x86/mm/mmap.c
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+++ b/arch/x86/mm/mmap.c
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@@ -35,12 +35,12 @@ struct __read_mostly va_alignment va_ali
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.flags = -1,
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};
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-static unsigned int stack_maxrandom_size(void)
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+static unsigned long stack_maxrandom_size(void)
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{
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- unsigned int max = 0;
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+ unsigned long max = 0;
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if ((current->flags & PF_RANDOMIZE) &&
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!(current->personality & ADDR_NO_RANDOMIZE)) {
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- max = ((-1U) & STACK_RND_MASK) << PAGE_SHIFT;
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+ max = ((-1UL) & STACK_RND_MASK) << PAGE_SHIFT;
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}
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return max;
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--- a/fs/binfmt_elf.c
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+++ b/fs/binfmt_elf.c
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@@ -554,11 +554,12 @@ out:
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static unsigned long randomize_stack_top(unsigned long stack_top)
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{
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- unsigned int random_variable = 0;
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+ unsigned long random_variable = 0;
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if ((current->flags & PF_RANDOMIZE) &&
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!(current->personality & ADDR_NO_RANDOMIZE)) {
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- random_variable = get_random_int() & STACK_RND_MASK;
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+ random_variable = (unsigned long) get_random_int();
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+ random_variable &= STACK_RND_MASK;
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random_variable <<= PAGE_SHIFT;
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}
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#ifdef CONFIG_STACK_GROWSUP
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@ -66,7 +66,6 @@ bugfix/all/aic94xx-remove-broken-fallback-for-missing-ctrl-a.patch
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bugfix/all/rtsx_usb_ms-use-msleep_interruptible-in-polling-loop.patch
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bugfix/all/net-mv643xx-disable-tso-by-default.patch
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bugfix/all/vfs-read-file_handle-only-once-in-handle_to_path.patch
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bugfix/all/aslr-fix-stack-randomization-on-64-bit-systems.patch
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# Miscellaneous features
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features/all/efi-autoload-efi-pstore.patch
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