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ima: fix error handling logic when file measurement failed 

commit 6dc387d52e upstream.

Restore the error handling logic so that when file measurement fails,
the respective iint entry is not left with the digest data being
populated with zeroes.

Fixes: 54f03916fb ("ima: permit fsverity's file digests in the IMA measurement list")
Cc: stable@vger.kernel.org	# 5.19
Signed-off-by: Matt Bobrowski <mattbobrowski@google.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matt Bobrowski 2023-01-04 03:41:44 +00:00 committed by Greg Kroah-Hartman
parent 1beb41094b
commit 7327b30a00
2 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
security/integrity/ima/ima_api.c
View File

@ -292,7 +292,7 @@ int ima_collect_measurement(struct integrity_iint_cache *iint,
result = ima_calc_file_hash(file, &hash.hdr);
}
if (result == -ENOMEM)
if (result && result != -EBADF && result != -EINVAL)
goto out;
length = sizeof(hash.hdr) + hash.hdr.length;

2
security/integrity/ima/ima_main.c
View File

@ -335,7 +335,7 @@ static int process_measurement(struct file *file, const struct cred *cred,
hash_algo = ima_get_hash_algo(xattr_value, xattr_len);
rc = ima_collect_measurement(iint, file, buf, size, hash_algo, modsig);
if (rc == -ENOMEM)
if (rc != 0 && rc != -EBADF && rc != -EINVAL)
goto out_locked;
if (!pathbuf) /* ima_rdwr_violation possibly pre-fetched */