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Filename Latest commit message Latest commit date
Eric Biggers 0119c617eb ubifs: don't trigger assertion on invalid no-key filename 
commit f0d07a98a070bb5e443df19c3aa55693cbca9341 upstream.

If userspace provides an invalid fscrypt no-key filename which encodes a
hash value with any of the UBIFS node type bits set (i.e. the high 3
bits), gracefully report ENOENT rather than triggering ubifs_assert().

Test case with kvm-xfstests shell:

    . fs/ubifs/config
    . ~/xfstests/common/encrypt
    dev=$(__blkdev_to_ubi_volume /dev/vdc)
    ubiupdatevol $dev -t
    mount $dev /mnt -t ubifs
    mkdir /mnt/edir
    xfs_io -c set_encpolicy /mnt/edir
    rm /mnt/edir/_,,,,,DAAAAAAAAAAAAAAAAAAAAAAAAAA

With the bug, the following assertion fails on the 'rm' command:

    [   19.066048] UBIFS error (ubi0:0 pid 379): ubifs_assert_failed: UBIFS assert failed: !(hash & ~UBIFS_S_KEY_HASH_MASK), in fs/ubifs/key.h:170

Fixes: f4f61d2cc6 ("ubifs: Implement encrypted filenames")
Cc: <stable@vger.kernel.org> # v4.10+
Link: https://lore.kernel.org/r/20200120223201.241390-5-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-11 04:35:20 -08:00
arch powerpc/32s: Fix CPU wake-up from sleep mode 2020-02-11 04:35:18 -08:00
block
certs
crypto
Documentation
drivers ACPI / battery: Deal better with neither design nor full capacity not being reported 2020-02-11 04:35:20 -08:00
fs ubifs: don't trigger assertion on invalid no-key filename 2020-02-11 04:35:20 -08:00
include ALSA: hda: Apply aligned MMIO access only conditionally 2020-02-11 04:35:15 -08:00
init
ipc
kernel alarmtimer: Unregister wakeup source when module get fails 2020-02-11 04:35:20 -08:00
lib lib/test_kasan.c: fix memory leak in kmalloc_oob_krealloc_more() 2020-02-11 04:35:14 -08:00
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sound ALSA: hda: Add JasperLake PCI ID and codec vid 2020-02-11 04:35:15 -08:00
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virt KVM: arm64: Only sign-extend MMIO up to register width 2020-02-11 04:35:16 -08:00
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README 

Linux kernel
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Please read the Documentation/process/changes.rst file, as it contains the
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