From 24c9ae23bdfa0642228e747849dd052fd4295c6c Mon Sep 17 00:00:00 2001 From: Roberto Sassu Date: Tue, 8 Jun 2021 14:31:21 +0200 Subject: ima: Set correct casting types The code expects that the values being parsed from a buffer when the ima_canonical_fmt global variable is true are in little endian. Thus, this patch sets the casting types accordingly. Reported-by: kernel test robot Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar --- security/integrity/ima/ima_template.c | 8 ++++---- security/integrity/ima/ima_template_lib.c | 11 ++++++----- 2 files changed, 10 insertions(+), 9 deletions(-) (limited to 'security') diff --git a/security/integrity/ima/ima_template.c b/security/integrity/ima/ima_template.c index a85963853a91..694560396be0 100644 --- a/security/integrity/ima/ima_template.c +++ b/security/integrity/ima/ima_template.c @@ -423,9 +423,9 @@ int ima_restore_measurement_list(loff_t size, void *buf) return 0; if (ima_canonical_fmt) { - khdr->version = le16_to_cpu(khdr->version); - khdr->count = le64_to_cpu(khdr->count); - khdr->buffer_size = le64_to_cpu(khdr->buffer_size); + khdr->version = le16_to_cpu((__force __le16)khdr->version); + khdr->count = le64_to_cpu((__force __le64)khdr->count); + khdr->buffer_size = le64_to_cpu((__force __le64)khdr->buffer_size); } if (khdr->version != 1) { @@ -515,7 +515,7 @@ int ima_restore_measurement_list(loff_t size, void *buf) } entry->pcr = !ima_canonical_fmt ? *(u32 *)(hdr[HDR_PCR].data) : - le32_to_cpu(*(u32 *)(hdr[HDR_PCR].data)); + le32_to_cpu(*(__le32 *)(hdr[HDR_PCR].data)); ret = ima_restore_measurement_entry(entry); if (ret < 0) break; diff --git a/security/integrity/ima/ima_template_lib.c b/security/integrity/ima/ima_template_lib.c index 518fd50ea48a..3f8d53a03612 100644 --- a/security/integrity/ima/ima_template_lib.c +++ b/security/integrity/ima/ima_template_lib.c @@ -98,21 +98,21 @@ static void ima_show_template_data_ascii(struct seq_file *m, case sizeof(u16): if (ima_canonical_fmt) seq_printf(m, "%u", - le16_to_cpu(*(u16 *)buf_ptr)); + le16_to_cpu(*(__le16 *)buf_ptr)); else seq_printf(m, "%u", *(u16 *)buf_ptr); break; case sizeof(u32): if (ima_canonical_fmt) seq_printf(m, "%u", - le32_to_cpu(*(u32 *)buf_ptr)); + le32_to_cpu(*(__le32 *)buf_ptr)); else seq_printf(m, "%u", *(u32 *)buf_ptr); break; case sizeof(u64): if (ima_canonical_fmt) seq_printf(m, "%llu", - le64_to_cpu(*(u64 *)buf_ptr)); + le64_to_cpu(*(__le64 *)buf_ptr)); else seq_printf(m, "%llu", *(u64 *)buf_ptr); break; @@ -226,9 +226,10 @@ int ima_parse_buf(void *bufstartp, void *bufendp, void **bufcurp, if (bufp > (bufendp - sizeof(u32))) break; - fields[i].len = *(u32 *)bufp; if (ima_canonical_fmt) - fields[i].len = le32_to_cpu(fields[i].len); + fields[i].len = le32_to_cpu(*(__le32 *)bufp); + else + fields[i].len = *(u32 *)bufp; bufp += sizeof(u32); } -- cgit v1.2.3-59-g8ed1b