cve-check: add option to add additional patched CVEs

- Replace CVE_CHECK_IGNORE with CVE_STATUS to be more flexible.
The CVE_STATUS should contain an information about status wich
is decoded in 3 items:
- generic status: "Ignored", "Patched" or "Unpatched"
- more detailed status enum
- description: free text describing reason for status

Examples of usage:
CVE_STATUS[CVE-1234-0001] = "not-applicable-platform: Issue only applies on Windows"
CVE_STATUS[CVE-1234-0002] = "fixed-version: Fixed externally"

CVE_CHECK_STATUSMAP[not-applicable-platform] = "Ignored"
CVE_CHECK_STATUSMAP[fixed-version] = "Patched"

(From OE-Core rev: 34f682a24b7075b12ec308154b937ad118d69fe5)

Signed-off-by: Andrej Valek <andrej.valek@siemens.com>
Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 29 insertions, 0 deletions

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 8daaaad615..475d6523bb 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -831,6 +831,7 @@ include conf/distro/defaultsetup.conf
 include conf/documentation.conf
 include conf/licenses.conf
 require conf/sanity.conf
+require conf/cve-check-map.conf
 
 ##################################################################
 # Weak variables (usually to retain backwards compatibility)
diff --git a/meta/conf/cve-check-map.conf b/meta/conf/cve-check-map.conf
new file mode 100644
index 0000000000..17b0f15571
--- /dev/null
+++ b/meta/conf/cve-check-map.conf
@@ -0,0 +1,28 @@
+# Possible options for CVE statuses
+
+# used by this class internally when fix is detected (NVD DB version check or CVE patch file)
+CVE_CHECK_STATUSMAP[patched] = "Patched"
+# use when this class does not detect backported patch (e.g. vendor kernel repo with cherry-picked CVE patch)
+CVE_CHECK_STATUSMAP[backported-patch] = "Patched"
+# use when NVD DB does not mention patched versions of stable/LTS branches which have upstream CVE backports
+CVE_CHECK_STATUSMAP[cpe-stable-backport] = "Patched"
+# use when NVD DB does not mention correct version or does not mention any verion at all
+CVE_CHECK_STATUSMAP[fixed-version] = "Patched"
+
+# used internally by this class if CVE vulnerability is detected which is not marked as fixed or ignored
+CVE_CHECK_STATUSMAP[unpatched] = "Unpatched"
+# use when CVE is confirmed by upstream but fix is still not available
+CVE_CHECK_STATUSMAP[vulnerable-investigating] = "Unpatched"
+
+# used for migration from old concept, do not use for new vulnerabilities
+CVE_CHECK_STATUSMAP[ignored] = "Ignored"
+# use when NVD DB wrongly indicates vulnerability which is actually for a different component
+CVE_CHECK_STATUSMAP[cpe-incorrect] = "Ignored"
+# use when upstream does not accept the report as a vulnerability (e.g. works as designed)
+CVE_CHECK_STATUSMAP[disputed] = "Ignored"
+# use when vulnerability depends on build or runtime configuration which is not used
+CVE_CHECK_STATUSMAP[not-applicable-config] = "Ignored"
+# use when vulnerability affects other platform (e.g. Windows or Debian)
+CVE_CHECK_STATUSMAP[not-applicable-platform] = "Ignored"
+# use when upstream acknowledged the vulnerability but does not plan to fix it
+CVE_CHECK_STATUSMAP[upstream-wontfix] = "Ignored"