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author | Christian Brueffer <brueffer@FreeBSD.org> | 2012-05-03 15:51:34 +0000 |
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committer | Christian Brueffer <brueffer@FreeBSD.org> | 2012-05-03 15:51:34 +0000 |
commit | e623c22083cf2736906658f78ce6b75e6700f5f0 (patch) | |
tree | 0e96613872af600c8079c5702e215e599a103111 /sys/security/mac_mls | |
parent | 99fb123f8d95c80945aba9f7599519f5ea3bb054 (diff) | |
download | src-e623c22083cf2736906658f78ce6b75e6700f5f0.tar.gz src-e623c22083cf2736906658f78ce6b75e6700f5f0.zip |
Check vplabel for NULL before dereferencing it. Fixes a panic
when running atop with MAC_MLS enabled.
Submitted by: Richard Kojedzinszky <krichy@tvnetwork.hu>
Reviewed by: rwatson
MFC after: 1 week
Notes
Notes:
svn path=/head/; revision=234957
Diffstat (limited to 'sys/security/mac_mls')
-rw-r--r-- | sys/security/mac_mls/mac_mls.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/security/mac_mls/mac_mls.c b/sys/security/mac_mls/mac_mls.c index 8ffa76b597f3..ff9084e870f8 100644 --- a/sys/security/mac_mls/mac_mls.c +++ b/sys/security/mac_mls/mac_mls.c @@ -2028,6 +2028,9 @@ mls_system_check_acct(struct ucred *cred, struct vnode *vp, if (!mls_enabled) return (0); + if (vplabel == NULL) + return (0); + subj = SLOT(cred->cr_label); obj = SLOT(vplabel); |