| Message ID | 20241022171515.3330183-1-henrique.carvalho@suse.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] fs_context.c: smb3_reconfigure: Handle kstrdup failures for passwords | expand |
diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c index 28c4e576d460a..5c5a52019efad 100644 --- a/fs/smb/client/fs_context.c +++ b/fs/smb/client/fs_context.c @@ -920,8 +920,15 @@ static int smb3_reconfigure(struct fs_context *fc) else { kfree_sensitive(ses->password); ses->password = kstrdup(ctx->password, GFP_KERNEL); + if (!ses->password) + return -ENOMEM; kfree_sensitive(ses->password2); ses->password2 = kstrdup(ctx->password2, GFP_KERNEL); + if (!ses->password2) { + kfree_sensitive(ses->password); + ses->password = NULL; + return -ENOMEM; + } } STEAL_STRING(cifs_sb, ctx, domainname); STEAL_STRING(cifs_sb, ctx, nodename);
In smb3_reconfigure(), after duplicating ctx->password and ctx->password2 with kstrdup(), we need to check for allocation failures. If ses->password allocation fails, return -ENOMEM. If ses->password2 allocation fails, free ses->password, set it to NULL, and return -ENOMEM. Fixes: c1eb537bf456 ("cifs: allow changing password during remount") Signed-off-by: Haoxiang Li <make24@iscas.ac.cn> Signed-off-by: Henrique Carvalho <henrique.carvalho@suse.com> --- V1 -> V2: Decoupled checks for ses->password and ses->password2. Ensured ses->password is freed and set to NULL if ses->password2 allocation fails. Corrected return value. Improved commit message. fs/smb/client/fs_context.c | 7 +++++++ 1 file changed, 7 insertions(+)