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| author |   Li Huafei <lihuafei1@huawei.com> | 2021-03-03 11:28:24 +0800 |
|---|---|---|
| committer |   Mimi Zohar <zohar@linux.ibm.com> | 2021-03-24 07:14:53 -0400 |
| commit | 7990ccafaa37dc6d8bb095d4d7cd997e8903fd10 (patch) | |
| tree | d361fb8ba519e1d1c2804e6d7d0ff04657a69284 /security/integrity | |
| parent | ima: without an IMA policy loaded, return quickly (diff) | |
| download | linux-dev-7990ccafaa37dc6d8bb095d4d7cd997e8903fd10.tar.xz linux-dev-7990ccafaa37dc6d8bb095d4d7cd997e8903fd10.zip | |
ima: Fix the error code for restoring the PCR value
In ima_restore_measurement_list(), hdr[HDR_PCR].data is pointing to a
buffer of type u8, which contains the dumped 32-bit pcr value.
Currently, only the least significant byte is used to restore the pcr
value. We should convert hdr[HDR_PCR].data to a pointer of type u32
before fetching the value to restore the correct pcr value.
Fixes: 47fdee60b47f ("ima: use ima_parse_buf() to parse measurements headers")
Signed-off-by: Li Huafei <lihuafei1@huawei.com>
Reviewed-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Diffstat (limited to 'security/integrity')
| -rw-r--r-- | security/integrity/ima/ima_template.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/security/integrity/ima/ima_template.c b/security/integrity/ima/ima_template.c index e22e510ae92d..4e081e650047 100644 --- a/security/integrity/ima/ima_template.c +++ b/security/integrity/ima/ima_template.c @@ -494,8 +494,8 @@ int ima_restore_measurement_list(loff_t size, void *buf) } } - entry->pcr = !ima_canonical_fmt ? *(hdr[HDR_PCR].data) : - le32_to_cpu(*(hdr[HDR_PCR].data)); + entry->pcr = !ima_canonical_fmt ? *(u32 *)(hdr[HDR_PCR].data) : + le32_to_cpu(*(u32 *)(hdr[HDR_PCR].data)); ret = ima_restore_measurement_entry(entry); if (ret < 0) break; |