e2fsprogs/e2fsck-fix-free-pointer-dereferences.patch
OBS User jankara 4cbe53b706 Fix use after free issue leading to occasional crash
Rev filesystems/60 Md5 3336c29a737163cacf6c64982744836c 2015-01-09 08:57:11 jankara 280547
2015-01-09 08:57:11 +00:00

52 lines
1.3 KiB
Diff

From ebdf895b43a1ce499e4d2556a201e2a753fc422f Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 8 Oct 2014 11:18:41 -0400
Subject: [PATCH] e2fsck: fix free pointer dereferences
References: bnc#912229
Commit 47fee2ef6a23a introduces some free pointer dereference bugs by
not clearing ctx->fs after calling ext2fs_close_free().
Reported-by: Matthias Andree <mandree@FreeBSD.org>
Cc: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Jan Kara <jack@suse.cz>
---
e2fsck/unix.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/e2fsck/unix.c b/e2fsck/unix.c
index 66debcde53ed..10036e76132c 100644
--- a/e2fsck/unix.c
+++ b/e2fsck/unix.c
@@ -458,7 +458,7 @@ static void check_if_skip(e2fsck_t ctx)
}
log_out(ctx, "\n");
skip:
- ext2fs_close_free(&fs);
+ ext2fs_close_free(&ctx->fs);
e2fsck_free_context(ctx);
exit(FSCK_OK);
}
@@ -1462,7 +1462,7 @@ failure:
/*
* Restart in order to reopen fs but this time start mmp.
*/
- ext2fs_close_free(&fs);
+ ext2fs_close_free(&ctx->fs);
flags &= ~EXT2_FLAG_SKIP_MMP;
goto restart;
}
@@ -1692,7 +1692,7 @@ no_journal:
_("while resetting context"));
fatal_error(ctx, 0);
}
- ext2fs_close_free(&fs);
+ ext2fs_close_free(&ctx->fs);
goto restart;
}
if (run_result & E2F_FLAG_ABORT)
--
2.1.2