On 2/13/20 10:21 AM, Greg Kroah-Hartman wrote:
From: Stephen Smalley <sds@xxxxxxxxxxxxx>
commit 1a37079c236d55fb31ebbf4b59945dab8ec8764c upstream.
This reverts commit e46e01eebbbc ("selinux: stop passing MAY_NOT_BLOCK
to the AVC upon follow_link"). The correct fix is to instead fall
back to ref-walk if audit is required irrespective of the specific
audit data type. This is done in the next commit.
Fixes: e46e01eebbbc ("selinux: stop passing MAY_NOT_BLOCK to the AVC upon follow_link")
Reported-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Stephen Smalley <sds@xxxxxxxxxxxxx>
Signed-off-by: Paul Moore <paul@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
This patch should be accompanied by commit
0188d5c025ca8fe756ba3193bd7d150139af5a88 ("selinux: fall back to
ref-walk if audit is required"). The former is reverting an incorrect
fix for bda0be7ad994 ("security: make inode_follow_link RCU-walk
aware"), the latter is providing the correct fix for it.
---
security/selinux/avc.c | 24 ++++++++++++++++++++++--
security/selinux/hooks.c | 5 +++--
security/selinux/include/avc.h | 5 +++++
3 files changed, 30 insertions(+), 4 deletions(-)
[...]
