https://github.com/torvalds/linux
Revision acddc72015e5bc8f640b02d38b36afd7841c9c14 authored by Mat Martineau on 17 July 2016, 23:10:55 UTC, committed by James Morris on 18 July 2016, 02:19:47 UTC
Arbitrary X.509 certificates without authority key identifiers (AKIs)
can be added to "trusted" keyrings, including IMA or EVM certs loaded
from the filesystem. Signature verification is currently bypassed for
certs without AKIs.

Trusted keys were recently refactored, and this bug is not present in
4.6.

restrict_link_by_signature should return -ENOKEY (no matching parent
certificate found) if the certificate being evaluated has no AKIs,
instead of bypassing signature checks and returning 0 (new certificate
accepted).

Reported-by: Petko Manolov <petkan@mip-labs.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
1 parent d128471
History
Tip revision: acddc72015e5bc8f640b02d38b36afd7841c9c14 authored by Mat Martineau on 17 July 2016, 23:10:55 UTC
KEYS: Fix for erroneous trust of incorrectly signed X.509 certs
Tip revision: acddc72
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arch
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drivers
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fs
include
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ipc
kernel
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mm
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samples
scripts
security
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usr
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.get_maintainer.ignore -rw-r--r-- 31 bytes
.gitignore -rw-r--r-- 1.2 KB
.mailmap -rw-r--r-- 6.4 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 95.5 KB
Kbuild -rw-r--r-- 2.8 KB
Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 353.9 KB
Makefile -rw-r--r-- 56.0 KB
README -rw-r--r-- 18.1 KB
REPORTING-BUGS -rw-r--r-- 7.3 KB

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