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| author | Gaosheng Cui <cuigaosheng1@huawei.com> | 2021-10-16 15:23:50 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-27 09:56:52 +0200 |
| commit | 16802fa4c33eb1a8efb23f1e93365190e4047d05 (patch) | |
| tree | 18c67c80c6f409f0475d75e59939b67e483bb88b /kernel/auditsc.c | |
| parent | 0d867a359979b368f8f00de48893d46a43440736 (diff) | |
| download | linux-stable-16802fa4c33eb1a8efb23f1e93365190e4047d05.tar.gz linux-stable-16802fa4c33eb1a8efb23f1e93365190e4047d05.tar.bz2 linux-stable-16802fa4c33eb1a8efb23f1e93365190e4047d05.zip | |
audit: fix possible null-pointer dereference in audit_filter_rules
commit 6e3ee990c90494561921c756481d0e2125d8b895 upstream.
Fix possible null-pointer dereference in audit_filter_rules.
audit_filter_rules() error: we previously assumed 'ctx' could be null
Cc: stable@vger.kernel.org
Fixes: bf361231c295 ("audit: add saddr_fam filter field")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/auditsc.c')
| -rw-r--r-- | kernel/auditsc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 8dba8f0983b5..638f424859ed 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -653,7 +653,7 @@ static int audit_filter_rules(struct task_struct *tsk, result = audit_comparator(audit_loginuid_set(tsk), f->op, f->val); break; case AUDIT_SADDR_FAM: - if (ctx->sockaddr) + if (ctx && ctx->sockaddr) result = audit_comparator(ctx->sockaddr->ss_family, f->op, f->val); break; |