From: Bean Huo Date: Fri, 7 Nov 2025 23:05:17 +0000 (+0100) Subject: scsi: ufs: core: fix incorrect buffer duplication in ufshcd_read_string_desc() X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d794b499f948801f54d67ddbc34a6eac5a6d150a;p=thirdparty%2Flinux.git scsi: ufs: core: fix incorrect buffer duplication in ufshcd_read_string_desc() The function ufshcd_read_string_desc() was duplicating memory starting from the beginning of struct uc_string_id, which included the length and type fields. As a result, the allocated buffer contained unwanted metadata in addition to the string itself. The correct behavior is to duplicate only the Unicode character array in the structure. Update the code so that only the actual string content is copied into the new buffer. Fixes: 5f57704dbcfe ("scsi: ufs: Use kmemdup in ufshcd_read_string_desc()") Reviewed-by: Avri Altman Reviewed-by: Bart Van Assche Signed-off-by: Bean Huo Link: https://patch.msgid.link/20251107230518.4060231-3-beanhuo@iokpp.de Signed-off-by: Martin K. Petersen --- diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 2a653137a9ead..af7f87f27630a 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -3835,7 +3835,7 @@ int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index, u8 **buf, enum u str[ret++] = '\0'; } else { - str = kmemdup(uc_str, uc_str->len, GFP_KERNEL); + str = kmemdup(uc_str->uc, uc_str->len, GFP_KERNEL); if (!str) { ret = -ENOMEM; goto out;