Author: gordon Date: Thu Sep 27 18:54:41 2018 New Revision: 338987 URL: https://svnweb.freebsd.org/changeset/base/338987
Log: Check to ensure the buffer returned is not NULL. Direct commit to the branch as this behavior is only seeing in stable/11. Reported by: Thomas Barabosch, Fraunhofer FKIE Reviewed by: wes@ Approved by: so Security: FreeBSD-EN-18:10.syscall Security: CVE-2018-17154 Modified: stable/11/sys/kern/vfs_syscalls.c Modified: stable/11/sys/kern/vfs_syscalls.c ============================================================================== --- stable/11/sys/kern/vfs_syscalls.c Thu Sep 27 18:50:10 2018 (r338986) +++ stable/11/sys/kern/vfs_syscalls.c Thu Sep 27 18:54:41 2018 (r338987) @@ -601,6 +601,8 @@ freebsd4_getfsstat(struct thread *td, struct freebsd4_ size = count * sizeof(struct statfs); error = kern_getfsstat(td, &buf, size, &count, UIO_SYSSPACE, uap->mode); + if (buf == NULL) + return (EINVAL); td->td_retval[0] = count; if (size != 0) { sp = buf; _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"