Date: Mon, 4 Mar 2019 11:19:22 +0000 (UTC) From: Fedor Uporov <fsu@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r344755 - head/sys/fs/ext2fs Message-ID: <201903041119.x24BJM53024478@repo.freebsd.org>
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Author: fsu Date: Mon Mar 4 11:19:21 2019 New Revision: 344755 URL: https://svnweb.freebsd.org/changeset/base/344755 Log: Fix integer overflow possibility. Reported by: Christopher Krah <krah@protonmail.com> Reported as: FS-2-EXT2-1: Out-of-Bounds Write in nmount (ext2_vget) Reviewed by: pfg MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D19326 Modified: head/sys/fs/ext2fs/ext2_vfsops.c Modified: head/sys/fs/ext2fs/ext2_vfsops.c ============================================================================== --- head/sys/fs/ext2fs/ext2_vfsops.c Mon Mar 4 11:12:19 2019 (r344754) +++ head/sys/fs/ext2fs/ext2_vfsops.c Mon Mar 4 11:19:21 2019 (r344755) @@ -1163,8 +1163,8 @@ ext2_vget(struct mount *mp, ino_t ino, int flags, stru struct buf *bp; struct vnode *vp; struct thread *td; - int i, error; - int used_blocks; + unsigned int i, used_blocks; + int error; td = curthread; error = vfs_hash_get(mp, ino, flags, td, vpp, NULL, NULL);
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