udf: prevent integer overflow in udf_bitmap_free_blocks()

Browse source

An overflow may occur if the function is called with the last
block and an offset greater than zero. It is necessary to add
a check to avoid this.

Found by Linux Verification Center (linuxtesting.org) with Svace.

[JK: Make test cover also unalloc table freeing]

Link: https://patch.msgid.link/20240620072413.7448-1-r.smirnov@omp.ru
Suggested-by: Jan Kara <jack@suse.com>
Signed-off-by: Roman Smirnov <r.smirnov@omp.ru>
Signed-off-by: Jan Kara <jack@suse.cz>

...

This commit is contained in:

Roman Smirnov 2024-06-20 10:24:13 +03:00 • committed by Jan Kara

parent ebbe26fd54

commit 56e69e5975

1 changed files with 13 additions and 23 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

36

fs/udf/balloc.c

View file