Date: Thu, 3 May 2012 15:51:34 +0000 (UTC) From: Christian Brueffer <brueffer@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r234957 - head/sys/security/mac_mls Message-ID: <201205031551.q43FpYBr049897@svn.freebsd.org>
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Author: brueffer Date: Thu May 3 15:51:34 2012 New Revision: 234957 URL: http://svn.freebsd.org/changeset/base/234957 Log: 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 Modified: head/sys/security/mac_mls/mac_mls.c Modified: head/sys/security/mac_mls/mac_mls.c ============================================================================== --- head/sys/security/mac_mls/mac_mls.c Thu May 3 15:37:05 2012 (r234956) +++ head/sys/security/mac_mls/mac_mls.c Thu May 3 15:51:34 2012 (r234957) @@ -2028,6 +2028,9 @@ mls_system_check_acct(struct ucred *cred if (!mls_enabled) return (0); + if (vplabel == NULL) + return (0); + subj = SLOT(cred->cr_label); obj = SLOT(vplabel);
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