This bug was fixed in the package linux-lts-utopic - 3.16.0-73.95~14.04.1 --------------- linux-lts-utopic (3.16.0-73.95~14.04.1) trusty; urgency=low
[ Kamal Mostafa ] * CVE-2016-1583 (LP: #1588871) - ecryptfs: fix handling of directory opening - SAUCE: proc: prevent stacking filesystems on top - SAUCE: ecryptfs: forbid opening files without mmap handler -- Andy Whitcroft <a...@canonical.com> Thu, 09 Jun 2016 08:46:24 +0100 ** Changed in: linux-lts-utopic (Ubuntu Trusty) Status: Fix Committed => Fix Released ** CVE added: http://www.cve.mitre.org/cgi- bin/cvename.cgi?name=2016-1583 ** Changed in: linux (Ubuntu Vivid) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1572316 Title: oops when propagating mounts into containers - RIP: 0010:[<ffffffff8123cb3e>] [<ffffffff8123cb3e>] propagate_one+0xbe/0x1c0 Status in linux package in Ubuntu: Fix Released Status in linux-lts-utopic package in Ubuntu: Invalid Status in linux source package in Trusty: Fix Released Status in linux-lts-utopic source package in Trusty: Fix Released Status in linux source package in Vivid: Fix Released Status in linux-lts-utopic source package in Vivid: Invalid Status in linux source package in Wily: Fix Released Status in linux-lts-utopic source package in Wily: Invalid Status in linux source package in Xenial: Fix Released Status in linux-lts-utopic source package in Xenial: Invalid Status in linux source package in Yakkety: Fix Released Status in linux-lts-utopic source package in Yakkety: Invalid Bug description: SRU Justification: Impact: Propagation to some mount tree configurations can cause the kernel to oops. This is trivially reproducible using lxd. Fix: Upstream cherry pick. Regression Potential: Both Eric and I have tested the fix and believe that the post-fix code will handle all cases the same as before except for the ones which weren't being handled correctly. I believe the regression potential is small. --- If I use LXD on xenial with a configuration that does something like: (/nfs in my case is an nfs mount, but based on the kernel code in question anything is probably okay): devices: bind: type: disk source: /nfs path: /nfs recursive: "true" and then start the container and on the host, do a new mount: sudo mount $ipaddr:/some/nfs/path /nfs/newpath You get the following kernel oops: Apr 11 21:59:36 stock2 kernel: [ 1648.993034] Oops: 0000 [#1] SMP Apr 11 21:59:36 stock2 kernel: [ 1648.993415] Modules linked in: binfmt_misc veth rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace fscache xt_CHECKSUM iptable_mangle xt_tcpudp ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack bridge stp llc iptable_filter ip_tables x_tables zfs(PO) zunicode(PO) zcommon(PO) znvpair(PO) spl(O) zavl(PO) ppdev kvm_intel parport_pc joydev kvm input_leds mac_hid irqbypass parport i2c_piix4 8250_fintek serio_raw ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr sunrpc iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt psmouse fb_sys_fops floppy drm pata_acpi Apr 11 21:59:36 stock2 kernel: [ 1649.002015] CPU: 2 PID: 9449 Comm: mount.nfs Tainted: P O 4.4.0-18-generic #34+tych0201604111025 Apr 11 21:59:36 stock2 kernel: [ 1649.003037] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 Apr 11 21:59:36 stock2 kernel: [ 1649.004042] task: ffff880074c1a580 ti: ffff880067d30000 task.ti: ffff880067d30000 Apr 11 21:59:36 stock2 kernel: [ 1649.004810] RIP: 0010:[<ffffffff8123cb3e>] [<ffffffff8123cb3e>] propagate_one+0xbe/0x1c0 Apr 11 21:59:36 stock2 kernel: [ 1649.005654] RSP: 0018:ffff880067d33d68 EFLAGS: 00010297 Apr 11 21:59:36 stock2 kernel: [ 1649.006211] RAX: ffff88003bb4ca80 RBX: ffff880074ad8300 RCX: ffff880074503500 Apr 11 21:59:36 stock2 kernel: [ 1649.006934] RDX: 0000000000000000 RSI: 000000000000019c RDI: 0000000000000000 Apr 11 21:59:36 stock2 kernel: [ 1649.007656] RBP: ffff880067d33d78 R08: ffff8800363bad80 R09: ffffffff813eac5c Apr 11 21:59:36 stock2 kernel: [ 1649.008390] R10: ffffea00002b5800 R11: 0000000000018711 R12: ffff8800363ba600 Apr 11 21:59:36 stock2 kernel: [ 1649.009111] R13: ffff880067d33dc0 R14: ffff880074ad8300 R15: 0000000000000000 Apr 11 21:59:36 stock2 kernel: [ 1649.009835] FS: 00007f653eac4880(0000) GS:ffff88007cd00000(0000) knlGS:0000000000000000 Apr 11 21:59:36 stock2 kernel: [ 1649.010642] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 11 21:59:36 stock2 kernel: [ 1649.011237] CR2: 0000000000000010 CR3: 0000000077a4e000 CR4: 00000000000006e0 Apr 11 21:59:36 stock2 kernel: [ 1649.011984] Stack: Apr 11 21:59:36 stock2 kernel: [ 1649.012255] ffff880074ad8300 ffff8800363ba600 ffff880067d33db0 ffffffff8123d060 Apr 11 21:59:36 stock2 kernel: [ 1649.013070] ffff88003bb4ca80 ffff8800363ba600 ffff88000c211980 0000000000000000 Apr 11 21:59:36 stock2 kernel: [ 1649.013892] ffff880067d33e98 ffff880067d33df8 ffffffff8122dd97 ffff88003bb4c900 Apr 11 21:59:36 stock2 kernel: [ 1649.014751] Call Trace: Apr 11 21:59:36 stock2 kernel: [ 1649.015053] [<ffffffff8123d060>] propagate_mnt+0x120/0x150 Apr 11 21:59:36 stock2 kernel: [ 1649.015643] [<ffffffff8122dd97>] attach_recursive_mnt+0x147/0x230 Apr 11 21:59:36 stock2 kernel: [ 1649.016286] [<ffffffff8122ded8>] graft_tree+0x58/0x90 Apr 11 21:59:36 stock2 kernel: [ 1649.016809] [<ffffffff8122df9e>] do_add_mount+0x8e/0xd0 Apr 11 21:59:36 stock2 kernel: [ 1649.017342] [<ffffffff8122ed70>] do_mount+0x2c0/0xe00 Apr 11 21:59:36 stock2 kernel: [ 1649.017863] [<ffffffff8122e924>] ? copy_mount_options+0xb4/0x220 Apr 11 21:59:36 stock2 kernel: [ 1649.018466] [<ffffffff8122fbdf>] SyS_mount+0x9f/0x100 Apr 11 21:59:36 stock2 kernel: [ 1649.018996] [<ffffffff818243b2>] entry_SYSCALL_64_fastpath+0x16/0x71 Apr 11 21:59:36 stock2 kernel: [ 1649.019631] Code: 39 90 d8 00 00 00 75 ec 8b b0 10 01 00 00 48 89 3d 80 e1 f8 00 48 89 05 81 e1 f8 00 39 b1 10 01 00 00 74 19 48 8b bf d8 00 00 00 <48> 8b 47 10 48 89 3d 5f e1 f8 00 48 89 05 60 e1 f8 00 8b 43 30 Apr 11 21:59:36 stock2 kernel: [ 1649.022395] RIP [<ffffffff8123cb3e>] propagate_one+0xbe/0x1c0 Apr 11 21:59:36 stock2 kernel: [ 1649.022990] RSP <ffff880067d33d68> Apr 11 21:59:36 stock2 kernel: [ 1649.023362] CR2: 0000000000000010 Apr 11 21:59:36 stock2 kernel: [ 1649.027053] ---[ end trace 46ce79a38cba28a5 ]--- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1572316/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp