Author: delphij Date: Thu Dec 14 07:55:11 2017 New Revision: 326843 URL: https://svnweb.freebsd.org/changeset/base/326843
Log: MFC r326391: Prevent OOB access on corrupted msdos directories. Submitted by: Veo Zhang <veo live com> Modified: stable/10/sbin/fsck_msdosfs/dir.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sbin/fsck_msdosfs/dir.c ============================================================================== --- stable/10/sbin/fsck_msdosfs/dir.c Thu Dec 14 07:52:38 2017 (r326842) +++ stable/10/sbin/fsck_msdosfs/dir.c Thu Dec 14 07:55:11 2017 (r326843) @@ -619,7 +619,7 @@ readDosDirSection(int f, struct bootblock *boot, struc dirent.name[8] = '\0'; for (k = 7; k >= 0 && dirent.name[k] == ' '; k--) dirent.name[k] = '\0'; - if (dirent.name[k] != '\0') + if (k < 0 || dirent.name[k] != '\0') k++; if (dirent.name[0] == SLOT_E5) dirent.name[0] = 0xe5; _______________________________________________ svn-src-stable-10@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-stable-10 To unsubscribe, send any mail to "svn-src-stable-10-unsubscr...@freebsd.org"