[OE-core][PATCH v4 4/8] cve-exclusions: set status for CVE-2022-1247

[Junjie Cao <junjie.cao@linux.dev>]

The CVE describes a race between rose_connect() and the code that
frees a rose_neigh once its count and use fields reach zero. The race
in the original report [1] is the one fixed independently in v6.17 by
the rose_neigh refcount conversion:

  https://git.kernel.org/linus/d860d1faa6b2ce3becfdb8b0c2b048ad31800061
  ("net: rose: convert 'use' field to refcount_t", v6.17)
  https://git.kernel.org/linus/da9c9c877597170b929a6121a68dcd3dd9a80f45
  ("net: rose: include node references in rose_neigh refcount", v6.17)

The Linux kernel CVE team assigned these commits CVE-2025-39826 and
CVE-2025-39827.

[1] https://bugzilla.redhat.com/show_bug.cgi?id=2066799

CC: Paul Barker <paul@pbarker.dev>
AI-Generated: Uses Claude (claude-opus-5)
Signed-off-by: Junjie Cao <junjie.cao@linux.dev>
---
v4:
- simplify the explanation as suggested; reference the original report
  instead of arguing from the commit diffs

v3: https://lore.kernel.org/openembedded-core/20260812072842.1176341-1-junjie.cao@linux.dev/

 meta/recipes-kernel/linux/cve-exclusion.inc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/meta/recipes-kernel/linux/cve-exclusion.inc b/meta/recipes-kernel/linux/cve-exclusion.inc
index 36920e2c..a9b4d9a2 100644
--- a/meta/recipes-kernel/linux/cve-exclusion.inc
+++ b/meta/recipes-kernel/linux/cve-exclusion.inc
@@ -214,3 +214,11 @@ Same-page Merging (KSM) page deduplication"
 # https://security-tracker.debian.org/tracker/CVE-2021-3864
 # https://ubuntu.com/security/CVE-2021-3864
 CVE_STATUS[CVE-2021-3864] = "unpatched: Proposed fixes were not merged upstream"
+
+# net/rose and rose_connect() were removed entirely in v7.1 (dd8d4bc28ad7).
+# The 6.18 kernel on master still carries net/rose; there the race is
+# closed by the v6.17 refcount conversion, which upstream tracks as
+# CVE-2025-39826 / CVE-2025-39827.
+# Fix https://git.kernel.org/linus/d860d1faa6b2ce3becfdb8b0c2b048ad31800061
+# Fix https://git.kernel.org/linus/da9c9c877597170b929a6121a68dcd3dd9a80f45
+CVE_STATUS[CVE-2022-1247] = "fixed-version: Fixed from version 6.17"
-- 
2.43.0