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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-22 23:52:59 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-22 23:52:59 +0300 |
| commit | 77bc1bb18463a7fa3742accaddf31845655edf66 (patch) | |
| tree | 979970e996c7a9b46caab13ce2ccb375c7f56e7d /security | |
| parent | 291a73a8e63a6a00f2f6863989cd1652a1f5b9a1 (diff) | |
| parent | ccfd889acb06eab10b98deb4b5eef0ec74157ea0 (diff) | |
| download | linux-77bc1bb18463a7fa3742accaddf31845655edf66.tar.xz | |
Merge tag 'Smack-for-6.3' of https://github.com/cschaufler/smack-next
Pull smack update from Casey Schaufler:
"One fix for resetting CIPSO labeling"
* tag 'Smack-for-6.3' of https://github.com/cschaufler/smack-next:
smackfs: Added check catlen
Diffstat (limited to 'security')
| -rw-r--r-- | security/smack/smackfs.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c index 4b58526450d4..5590eaad241b 100644 --- a/security/smack/smackfs.c +++ b/security/smack/smackfs.c @@ -830,7 +830,7 @@ static int smk_open_cipso(struct inode *inode, struct file *file) static ssize_t smk_set_cipso(struct file *file, const char __user *buf, size_t count, loff_t *ppos, int format) { - struct netlbl_lsm_catmap *old_cat; + struct netlbl_lsm_catmap *old_cat, *new_cat = NULL; struct smack_known *skp; struct netlbl_lsm_secattr ncats; char mapcatset[SMK_CIPSOLEN]; @@ -917,8 +917,19 @@ static ssize_t smk_set_cipso(struct file *file, const char __user *buf, smack_catset_bit(cat, mapcatset); } - - rc = smk_netlbl_mls(maplevel, mapcatset, &ncats, SMK_CIPSOLEN); + ncats.flags = 0; + if (catlen == 0) { + ncats.attr.mls.cat = NULL; + ncats.attr.mls.lvl = maplevel; + new_cat = netlbl_catmap_alloc(GFP_ATOMIC); + if (new_cat) + new_cat->next = ncats.attr.mls.cat; + ncats.attr.mls.cat = new_cat; + skp->smk_netlabel.flags &= ~(1U << 3); + rc = 0; + } else { + rc = smk_netlbl_mls(maplevel, mapcatset, &ncats, SMK_CIPSOLEN); + } if (rc >= 0) { old_cat = skp->smk_netlabel.attr.mls.cat; skp->smk_netlabel.attr.mls.cat = ncats.attr.mls.cat; |