This is a note to let you know that I've just added the patch titled
ima: fix error handling logic when file measurement failed
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ima-fix-error-handling-logic-when-file-measurement-failed.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6dc387d52eb67f45d68caa263704fa4e39ef8e76 Mon Sep 17 00:00:00 2001
From: Matt Bobrowski <mattbobrowski@xxxxxxxxxx>
Date: Wed, 4 Jan 2023 03:41:44 +0000
Subject: ima: fix error handling logic when file measurement failed
From: Matt Bobrowski <mattbobrowski@xxxxxxxxxx>
commit 6dc387d52eb67f45d68caa263704fa4e39ef8e76 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: 54f03916fb89 ("ima: permit fsverity's file digests in the IMA measurement list")
Cc: stable@xxxxxxxxxxxxxxx # 5.19
Signed-off-by: Matt Bobrowski <mattbobrowski@xxxxxxxxxx>
Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
security/integrity/ima/ima_api.c | 2 +-
security/integrity/ima/ima_main.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/security/integrity/ima/ima_api.c
+++ b/security/integrity/ima/ima_api.c
@@ -292,7 +292,7 @@ int ima_collect_measurement(struct integ
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;
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -337,7 +337,7 @@ static int process_measurement(struct fi
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 */
Patches currently in stable-queue which might be from mattbobrowski@xxxxxxxxxx are
queue-6.2/ima-fix-error-handling-logic-when-file-measurement-failed.patch
