11.1/releng-p4.diff

Index: UPDATING
===================================================================
--- UPDATING	(版本 325325)
+++ UPDATING	(版本 325875)
@@ -16,6 +16,13 @@
 the tip of head, and then rebuild without this option. The bootstrap process
 from older version of current across the gcc/clang cutover is a bit fragile.
 
+20171115	p3	FreeBSD-SA-17:08.ptrace
+			FreeBSD-SA-17:10.kldstat
+
+	Fix ptrace(2) vulnerability. [SA-17:08.ptrace]
+
+	Fix kldstat(2) vulnerability. [SA-17:10.kldstat]
+
 20171102	p3	FreeBSD-EN-17:09.tzdata
 
 	Update timezone database information. [EN-17:09]
Index: sys/compat/freebsd32/freebsd32_misc.c
===================================================================
--- sys/compat/freebsd32/freebsd32_misc.c	(版本 325325)
+++ sys/compat/freebsd32/freebsd32_misc.c	(版本 325875)
@@ -2950,8 +2950,8 @@
 int
 freebsd32_kldstat(struct thread *td, struct freebsd32_kldstat_args *uap)
 {
-	struct kld_file_stat stat;
-	struct kld32_file_stat stat32;
+	struct kld_file_stat *stat;
+	struct kld32_file_stat *stat32;
 	int error, version;
 
 	if ((error = copyin(&uap->stat->version, &version, sizeof(version)))
@@ -2961,17 +2961,22 @@
 	    version != sizeof(struct kld32_file_stat))
 		return (EINVAL);
 
-	error = kern_kldstat(td, uap->fileid, &stat);
-	if (error != 0)
-		return (error);
-
-	bcopy(&stat.name[0], &stat32.name[0], sizeof(stat.name));
-	CP(stat, stat32, refs);
-	CP(stat, stat32, id);
-	PTROUT_CP(stat, stat32, address);
-	CP(stat, stat32, size);
-	bcopy(&stat.pathname[0], &stat32.pathname[0], sizeof(stat.pathname));
-	return (copyout(&stat32, uap->stat, version));
+	stat = malloc(sizeof(*stat), M_TEMP, M_WAITOK | M_ZERO);
+	stat32 = malloc(sizeof(*stat32), M_TEMP, M_WAITOK | M_ZERO);
+	error = kern_kldstat(td, uap->fileid, stat);
+	if (error == 0) {
+		bcopy(&stat->name[0], &stat32->name[0], sizeof(stat->name));
+		CP(*stat, *stat32, refs);
+		CP(*stat, *stat32, id);
+		PTROUT_CP(*stat, *stat32, address);
+		CP(*stat, *stat32, size);
+		bcopy(&stat->pathname[0], &stat32->pathname[0],
+		    sizeof(stat->pathname));
+		error = copyout(stat32, uap->stat, version);
+	}
+	free(stat, M_TEMP);
+	free(stat32, M_TEMP);
+	return (error);
 }
 
 int
Index: sys/conf/newvers.sh
===================================================================
--- sys/conf/newvers.sh	(版本 325325)
+++ sys/conf/newvers.sh	(版本 325875)
@@ -44,7 +44,7 @@
 
 TYPE="FreeBSD"
 REVISION="11.1"
-BRANCH="RELEASE-p3"
+BRANCH="RELEASE-p4"
 if [ -n "${BRANCH_OVERRIDE}" ]; then
 	BRANCH=${BRANCH_OVERRIDE}
 fi
Index: sys/kern/kern_linker.c
===================================================================
--- sys/kern/kern_linker.c	(版本 325325)
+++ sys/kern/kern_linker.c	(版本 325875)
@@ -1201,7 +1201,7 @@
 int
 sys_kldstat(struct thread *td, struct kldstat_args *uap)
 {
-	struct kld_file_stat stat;
+	struct kld_file_stat *stat;
 	int error, version;
 
 	/*
@@ -1214,10 +1214,12 @@
 	    version != sizeof(struct kld_file_stat))
 		return (EINVAL);
 
-	error = kern_kldstat(td, uap->fileid, &stat);
-	if (error != 0)
-		return (error);
-	return (copyout(&stat, uap->stat, version));
+	stat = malloc(sizeof(*stat), M_TEMP, M_WAITOK | M_ZERO);
+	error = kern_kldstat(td, uap->fileid, stat);
+	if (error == 0)
+		error = copyout(stat, uap->stat, version);
+	free(stat, M_TEMP);
+	return (error);
 }
 
 int
Index: sys/kern/sys_process.c
===================================================================
--- sys/kern/sys_process.c	(版本 325325)
+++ sys/kern/sys_process.c	(版本 325875)
@@ -518,6 +518,7 @@
     struct ptrace_lwpinfo32 *pl32)
 {
 
+	bzero(pl32, sizeof(*pl32));
 	pl32->pl_lwpid = pl->pl_lwpid;
 	pl32->pl_event = pl->pl_event;
 	pl32->pl_flags = pl->pl_flags;
@@ -1301,6 +1302,7 @@
 		} else
 #endif
 		pl = addr;
+		bzero(pl, sizeof(*pl));
 		pl->pl_lwpid = td2->td_tid;
 		pl->pl_event = PL_EVENT_NONE;
 		pl->pl_flags = 0;
@@ -1321,8 +1323,6 @@
 				pl->pl_siginfo = td2->td_dbgksi.ksi_info;
 			}
 		}
-		if ((pl->pl_flags & PL_FLAG_SI) == 0)
-			bzero(&pl->pl_siginfo, sizeof(pl->pl_siginfo));
 		if (td2->td_dbgflags & TDB_SCE)
 			pl->pl_flags |= PL_FLAG_SCE;
 		else if (td2->td_dbgflags & TDB_SCX)