This bug was fixed in the package linux - 4.4.0-161.189
---------------
linux (4.4.0-161.189) xenial; urgency=medium
* xenial/linux: 4.4.0-161.189 -proposed tracker (LP: #1841544)
* flock not mediated by 'k' (LP: 1658219)
- Revert "UBUNTU: SAUCE: apparmor: flock mediation is not being, enforced on
cache check"
* Packaging resync (LP: #1786013)
- [Packaging] resync getabis
linux (4.4.0-160.188) xenial; urgency=medium
* xenial/linux: 4.4.0-160.188 -proposed tracker (LP: #1840021)
* Packaging resync (LP: #1786013)
- [Packaging] update helper scripts
* EeePC 1005px laptop backlight is off after system boot up (LP: #1837117)
- platform/x86: asus-wmi: Only Tell EC the OS will handle display hotkeys
from
asus_nb_wmi
* CVE-2019-10638
- [Config] CONFIG_TEST_HASH=n
- siphash: add cryptographically secure PRF
- inet: switch IP ID generator to siphash
* Stacked onexec transitions fail when under NO NEW PRIVS restrictions
(LP: #1839037)
- SAUCE: apparmor: fix nnp subset check failure, when stacking
* AppArmor onexec transition causes WARN kernel stack trace (LP: #1838627)
- SAUCE: apparmor: fix audit failures when performing profile transitions
* flock not mediated by 'k' (LP: 1658219) // Ubuntu 16.04: read access
incorrectly implies 'm' rule (LP: 1838090)
- SAUCE: apparmor: flock mediation is not being, enforced on cache check
* bcache: bch_allocator_thread(): hung task timeout (LP: #1784665) // Tight
timeout for bcache removal causes spurious failures (LP: #1796292)
- SAUCE: bcache: fix deadlock in bcache_allocator
* bcache: bch_allocator_thread(): hung task timeout (LP: #1784665)
- bcache: improve bcache_reboot()
- bcache: add journal statistic
- bcache: fix high CPU occupancy during journal
- bcache: fix incorrect sysfs output value of strip size
- bcache: fix error return value in memory shrink
- bcache: fix using of loop variable in memory shrink
- bcache: Fix indentation
- bcache: Add __printf annotation to __bch_check_keys()
- bcache: Annotate switch fall-through
- bcache: Fix kernel-doc warnings
- bcache: Remove an unused variable
- bcache: Suppress more warnings about set-but-not-used variables
- bcache: Reduce the number of sparse complaints about lock imbalances
- bcache: Move couple of functions to sysfs.c
* CVE-2019-3900
- vhost: introduce vhost_vq_avail_empty()
- vhost_net: tx batching
- vhost_net: do not stall on zerocopy depletion
- vhost-net: set packet weight of tx polling to 2 * vq size
- vhost_net: use packet weight for rx handler, too
- vhost_net: introduce vhost_exceeds_weight()
- vhost: introduce vhost_exceeds_weight()
- vhost_net: fix possible infinite loop
- vhost: scsi: add weight support
* Xenial: ZFS deadlock in shrinker path with xattrs (LP: #1839521)
- SAUCE: (noup) Update zfs to 0.6.5.6-0ubuntu28
* CVE-2019-13648
- powerpc/tm: Fix oops on sigreturn on systems without TM
* CVE-2018-20856
- block: blk_init_allocated_queue() set q->fq as NULL in the fail case
* CVE-2019-14283
- floppy: fix out-of-bounds read in copy_buffer
* CVE-2019-14284
- floppy: fix div-by-zero in setup_format_params
* Xenial update: 4.4.186 upstream stable release (LP: #1838467)
- Input: elantech - enable middle button support on 2 ThinkPads
- samples, bpf: fix to change the buffer size for read()
- mac80211: mesh: fix RCU warning
- dt-bindings: can: mcp251x: add mcp25625 support
- can: mcp251x: add support for mcp25625
- Input: imx_keypad - make sure keyboard can always wake up system
- ARM: davinci: da850-evm: call regulator_has_full_constraints()
- ARM: davinci: da8xx: specify dma_coherent_mask for lcdc
- md: fix for divide error in status_resync
- bnx2x: Check if transceiver implements DDM before access
- udf: Fix incorrect final NOT_ALLOCATED (hole) extent length
- x86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg()
- x86/tls: Fix possible spectre-v1 in do_get_thread_area()
- mwifiex: Abort at too short BSS descriptor element
- fscrypt: don't set policy for a dead directory
- mwifiex: Don't abort on small, spec-compliant vendor IEs
- USB: serial: ftdi_sio: add ID for isodebug v1
- USB: serial: option: add support for GosunCn ME3630 RNDIS mode
- usb: gadget: ether: Fix race between gether_disconnect and rx_submit
- usb: renesas_usbhs: add a workaround for a race condition of workqueue
- staging: comedi: dt282x: fix a null pointer deref on interrupt
- staging: comedi: amplc_pci230: fix null pointer deref on interrupt
- carl9170: fix misuse of device driver API
- VMCI: Fix integer overflow in VMCI handle arrays
- MIPS: Remove superfluous check for __linux__
- e1000e: start network tx queue only when link is up
- perf/core: Fix perf_sample_regs_user() mm check
- ARM: omap2: remove incorrect __init annotation
- be2net: fix link failure after ethtool offline test
- ppp: mppe: Add softdep to arc4
- sis900: fix TX completion
- dm verity: use message limit for data block corruption message
- kvm: x86: avoid warning on repeated KVM_SET_TSS_ADDR
- ARC: hide unused function unw_hdr_alloc
- s390: fix stfle zero padding
- s390/qdio: (re-)initialize tiqdio list entries
- s390/qdio: don't touch the dsci in tiqdio_add_input_queues()
- KVM: x86: protect KVM_CREATE_PIT/KVM_CREATE_PIT2 with kvm->lock
- Linux 4.4.186
-- Stefan Bader <stefan.ba...@canonical.com> Tue, 27 Aug 2019 09:49:19
+0200
** Changed in: linux (Ubuntu Xenial)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-20856
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-10638
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-13648
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2019-3900
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https://bugs.launchpad.net/bugs/1839037
Title:
Stacked onexec transitions fail when under NO NEW PRIVS restrictions
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Xenial:
Fix Released
Status in linux source package in Bionic:
Fix Released
Bug description:
running the apparmor nnp regression tests results in the following
failure
Error: transition failed. Test 'NNP (stack onexec - NNP)' was expected
to 'pass'. Reason for failure 'FAIL - execv: Operation not permitted'
with a log message of
[ 1169.863302] audit: type=1400 audit(1565046042.144:280686):
apparmor="DENIED" operation="exec" info="no new privs" error=-1
profile="/home/jj/apparmor.git/tests/regression/apparmor/transition"
name="/home/jj/apparmor.git/tests/regression/apparmor/open" pid=1888
comm="transition" requested_mask="x" denied_mask="x" fsuid=0 ouid=1000
target="/home/jj/apparmor.git/tests/regression/apparmor/open"
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