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[LSM-IPSec]: Corrections to LSM-IPSec Nethooks

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This patch contains two corrections to the LSM-IPsec Nethooks patches
previously applied.  

(1) free a security context on a failed insert via xfrm_user 
interface in xfrm_add_policy.  Memory leak.

(2) change the authorization of the allocation of a security context
in a xfrm_policy or xfrm_state from both relabelfrom and relabelto 
to setcontext.

Signed-off-by: Trent Jaeger <tjaeger@cse.psu.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Trent Jaeger 2006-01-06 13:22:39 -08:00 committed by David S. Miller
parent 69549ddd2f
commit 5f8ac64b15
4 changed files with 4 additions and 11 deletions
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1
net/xfrm/xfrm_user.c
View File

@ -802,6 +802,7 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh, void **xfr
excl = nlh->nlmsg_type == XFRM_MSG_NEWPOLICY;
err = xfrm_policy_insert(p->dir, xp, excl);
if (err) {
security_xfrm_policy_free(xp);
kfree(xp);
return err;
}

3
security/selinux/include/av_perm_to_string.h
View File

@ -238,5 +238,4 @@
S_(SECCLASS_NSCD, NSCD__SHMEMHOST, "shmemhost")
S_(SECCLASS_ASSOCIATION, ASSOCIATION__SENDTO, "sendto")
S_(SECCLASS_ASSOCIATION, ASSOCIATION__RECVFROM, "recvfrom")
S_(SECCLASS_ASSOCIATION, ASSOCIATION__RELABELFROM, "relabelfrom")
S_(SECCLASS_ASSOCIATION, ASSOCIATION__RELABELTO, "relabelto")
S_(SECCLASS_ASSOCIATION, ASSOCIATION__SETCONTEXT, "setcontext")

3
security/selinux/include/av_permissions.h
View File

@ -908,8 +908,7 @@
#define ASSOCIATION__SENDTO 0x00000001UL
#define ASSOCIATION__RECVFROM 0x00000002UL
#define ASSOCIATION__RELABELFROM 0x00000004UL
#define ASSOCIATION__RELABELTO 0x00000008UL
#define ASSOCIATION__SETCONTEXT 0x00000004UL
#define NETLINK_KOBJECT_UEVENT_SOCKET__IOCTL 0x00000001UL
#define NETLINK_KOBJECT_UEVENT_SOCKET__READ 0x00000002UL

8
security/selinux/xfrm.c
View File

@ -137,15 +137,9 @@ static int selinux_xfrm_sec_ctx_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_us
* Must be permitted to relabel from default socket type (process type)
* to specified context
*/
rc = avc_has_perm(tsec->sid, tsec->sid,
SECCLASS_ASSOCIATION,
ASSOCIATION__RELABELFROM, NULL);
if (rc)
goto out;
rc = avc_has_perm(tsec->sid, ctx->ctx_sid,
SECCLASS_ASSOCIATION,
ASSOCIATION__RELABELTO, NULL);
ASSOCIATION__SETCONTEXT, NULL);
if (rc)
goto out;