From ebdf895b43a1ce499e4d2556a201e2a753fc422f Mon Sep 17 00:00:00 2001 From: Theodore Ts'o 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 Cc: Lukas Czerner Signed-off-by: Theodore Ts'o Acked-by: Jan Kara --- 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