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| author | Eric Paris <eparis@redhat.com> | 2007-09-19 17:19:12 -0400 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2007-09-20 08:06:40 +1000 |
| commit | 31e879309474d1666d645b96de99d0b682fa055f (patch) | |
| tree | bb9d45dc85e03044b5ee7635f3646774bcbb30d4 /security | |
| parent | a88a8eff1e6e32d3288986a9d36c6a449c032d3a (diff) | |
| download | lwn-31e879309474d1666d645b96de99d0b682fa055f.tar.gz lwn-31e879309474d1666d645b96de99d0b682fa055f.zip | |
SELinux: fix array out of bounds when mounting with selinux options
Given an illegal selinux option it was possible for match_token to work in
random memory at the end of the match_table_t array.
Note that privilege is required to perform a context mount, so this issue is
effectively limited to root only.
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/selinux/hooks.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 36946629b6ca..0753b20e23fe 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -316,6 +316,7 @@ static inline int inode_doinit(struct inode *inode) } enum { + Opt_error = -1, Opt_context = 1, Opt_fscontext = 2, Opt_defcontext = 4, @@ -327,6 +328,7 @@ static match_table_t tokens = { {Opt_fscontext, "fscontext=%s"}, {Opt_defcontext, "defcontext=%s"}, {Opt_rootcontext, "rootcontext=%s"}, + {Opt_error, NULL}, }; #define SEL_MOUNT_FAIL_MSG "SELinux: duplicate or incompatible mount options\n" |