aae2ea619e
A regression was introduced recently as a part of the series of filesystem related patches to address some CVEs found in GRUB. This issue may cause either an infinite loop at startup when accessing certain valid NTFS filesystems, or may cause a crash due to a NULL pointer dereference on systems where NULL address is invalid (such as may happen when calling grub-mount from the operating system level). Correct this issue by checking that at->attr_cur is within bounds inside find_attr(). Fixes: https://savannah.gnu.org/bugs/?66855 Fixes: aff263187 (fs/ntfs: Fix out-of-bounds read) Signed-off-by: B Horn <b@horn.uk> Signed-off-by: Andrew Hamilton <adhamilt@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. See the file MAINTAINERS for information about the GRUB maintainers, etc. If you found a security vulnerability in the GRUB please check the SECURITY file to get more information how to properly report this kind of bugs to the maintainers. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'