diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2007-02-14 00:34:15 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-14 08:10:00 -0800 |
| commit | b599fdfdb4bb4941e9076308efcf3bb89e577db5 (patch) | |
| tree | c224273f3ef29749bf3f62e06f7ffdee595996c0 | |
| parent | 3fbfa98112fc3962c416452a0baf2214381030e6 (diff) | |
| download | lwn-b599fdfdb4bb4941e9076308efcf3bb89e577db5.tar.gz lwn-b599fdfdb4bb4941e9076308efcf3bb89e577db5.zip | |
[PATCH] sysctl: fix the selinux_sysctl_get_sid
I goofed and when reenabling the fine grained selinux labels for
sysctls and forgot to add the "/sys" prefix before consulting
the policy database. When computing the same path using
proc_dir_entries we got the "/sys" for free as it was part
of the tree, but it isn't true for clt_table trees.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | security/selinux/hooks.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 118ddfb614ee..b8ede1c7607b 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1451,6 +1451,12 @@ static int selinux_sysctl_get_sid(ctl_table *table, u16 tclass, u32 *sid) path = end; table = table->parent; } + buflen -= 4; + if (buflen < 0) + goto out_free; + end -= 4; + memcpy(end, "/sys", 4); + path = end; rc = security_genfs_sid("proc", path, tclass, sid); out_free: free_page((unsigned long)buffer); |