libblockdev 2.20-7ubuntu0.1 source package in Ubuntu
Changelog
libblockdev (2.20-7ubuntu0.1) disco; urgency=medium
[ intrigeri ]
* Use existing cryptsetup API for changing keyslot passphrase.
Cherry-pick upstream fix to use existing cryptsetup API for atomically
changing a keyslot passphrase, instead of deleting the old keyslot
before adding the new one. This avoids data loss when attempting to
change the passphrase of a LUKS2 device via udisks2, e.g. from GNOME
Disks.
Deleting a keyslot and then adding one is risky: if anything goes wrong
before the new keyslot is successfully added, no usable keyslot is left
and the device cannot be unlocked anymore. There's little chances this
causes actual problems with LUKS1, but LUKS2 defaults to the memory-hard
Argon2 key derivation algorithm, which is implemented in cryptsetup with
the assumption that it runs as root with no MEMLOCK ulimit; this
assumption is wrong when run by udisks2.service under
LimitMEMLOCK=65536, which breaks adding the new keyslot, and makes us
hit the problematic situation (user data loss) every time.
With this change, changing a LUKS2 passphrase via udisks2 will still
fail in some cases, until the MEMLOCK ulimit problem is solved in
cryptsetup or workaround'ed in udisks2. But at least, if it fails, it
will fail _atomically_ and the original passphrase will still work.
(Closes: #928893) (LP: #1837437)
-- Olivier Tilloy <email address hidden> Thu, 25 Jul 2019 12:33:46 +0200
Upload details
- Uploaded by:
- Olivier Tilloy
- Sponsored by:
- Iain Lane
- Uploaded to:
- Disco
- Original maintainer:
- Utopia Maintenance Team
- Architectures:
- linux-any all
- Section:
- misc
- Urgency:
- Medium Urgency
See full publishing history Publishing
| Series | Published | Component | Section |
|---|
Downloads
| File | Size | SHA-256 Checksum |
|---|---|---|
| libblockdev_2.20.orig.tar.gz | 330.1 KiB | 34eb0b22417f9211052a81a6ee78f4d66db1cf05cca4b5448d01dfac729ad0e6 |
| libblockdev_2.20-7ubuntu0.1.debian.tar.xz | 12.6 KiB | 09e417157f8cbf3e1f4571010a1eae4842d5fce14b3c07702ad2ace97b1013ce |
| libblockdev_2.20-7ubuntu0.1.dsc | 5.2 KiB | ecfe105b7c35186ee9baf62bfbdbb7a12ccea90a326d06153d35c26b8a1a6918 |
Available diffs
Binary packages built by this source
- gir1.2-blockdev-2.0: No summary available for gir1.2-blockdev-2.0 in ubuntu disco.
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- libblockdev-btrfs-dev: No summary available for libblockdev-btrfs-dev in ubuntu disco.
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- libblockdev-btrfs2: No summary available for libblockdev-btrfs2 in ubuntu disco.
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- libblockdev-btrfs2-dbgsym: No summary available for libblockdev-btrfs2-dbgsym in ubuntu disco.
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- libblockdev-crypto-dev: No summary available for libblockdev-crypto-dev in ubuntu disco.
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- libblockdev-crypto2: No summary available for libblockdev-crypto2 in ubuntu disco.
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- libblockdev-dev: No summary available for libblockdev-dev in ubuntu disco.
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- libblockdev-dm-dev: No summary available for libblockdev-dm-dev in ubuntu disco.
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- libblockdev-fs-dev: No summary available for libblockdev-fs-dev in ubuntu disco.
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- libblockdev-kbd-dev: No summary available for libblockdev-kbd-dev in ubuntu disco.
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- libblockdev-loop-dev: No summary available for libblockdev-loop-dev in ubuntu disco.
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- libblockdev-lvm-dev: No summary available for libblockdev-lvm-dev in ubuntu disco.
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- libblockdev-lvm2: No summary available for libblockdev-lvm2 in ubuntu disco.
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- libblockdev-lvm2-dbgsym: No summary available for libblockdev-lvm2-dbgsym in ubuntu disco.
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- libblockdev-mdraid-dev: No summary available for libblockdev-mdraid-dev in ubuntu disco.
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- libblockdev-mdraid2: No summary available for libblockdev-mdraid2 in ubuntu disco.
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- libblockdev-mdraid2-dbgsym: No summary available for libblockdev-mdraid2-dbgsym in ubuntu disco.
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- libblockdev-mpath-dev: No summary available for libblockdev-mpath-dev in ubuntu disco.
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- libblockdev-nvdimm-dev: No summary available for libblockdev-nvdimm-dev in ubuntu disco.
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- libblockdev-part-dev: No summary available for libblockdev-part-dev in ubuntu disco.
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- libblockdev-part-err2-dbgsym: No summary available for libblockdev-part-err2-dbgsym in ubuntu disco.
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- libblockdev-part2: No summary available for libblockdev-part2 in ubuntu disco.
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- libblockdev-plugins-all: No summary available for libblockdev-plugins-all in ubuntu disco.
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- libblockdev-swap-dev: No summary available for libblockdev-swap-dev in ubuntu disco.
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- libblockdev-swap2: No summary available for libblockdev-swap2 in ubuntu disco.
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- libblockdev-utils-dev: No summary available for libblockdev-utils-dev in ubuntu disco.
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- libblockdev-utils2: No summary available for libblockdev-utils2 in ubuntu disco.
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- libblockdev-vdo-dev: No summary available for libblockdev-vdo-dev in ubuntu disco.
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- libblockdev2: No summary available for libblockdev2 in ubuntu disco.
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- python3-blockdev: No summary available for python3-blockdev in ubuntu disco.
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