The CVE describes a race between rose_connect() and the code that frees a rose_neigh once its count and use fields reach zero.
net/rose, and rose_connect() with it, was removed entirely in v7.1: https://git.kernel.org/linus/dd8d4bc28ad7252610d8e79c1313a2d1e3499a51 ("net: remove ax25 and amateur radio (hamradio) subsystem", v7.1) The linux-yocto kernel on master is 6.18, which still carries net/rose. There the race is closed by Takamitsu Iwai's August 2025 refcount conversion, which converts the 'use' field to refcount_t and removes the unlocked rose->neighbour->use++ in rose_connect() that the CVE describes: 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) Both are in v6.17 and were backported to 6.1.y, 6.6.y, 6.12.y and 6.16.y in the 2025-09-02 stable round. Upstream assigned these two commits their own identifiers, CVE-2025-39826 and CVE-2025-39827 (both fixed in v6.17-rc4), so the identification does not rest on this reading of the diff alone. The Red Hat record for CVE-2022-1247 still shows it open and lists no fix. CC: Paul Barker <[email protected]> AI-Generated: Uses Claude (claude-opus-5) Signed-off-by: Junjie Cao <[email protected]> --- v3: - lead with the v7.1 removal of net/rose per review; keep the v6.17 commits, which are what covers the 6.18 kernel on master - cite the upstream CVE-2025-39826 / CVE-2025-39827 assignments for the two fixing commits instead of relying on the diff match alone v2: https://lore.kernel.org/openembedded-core/[email protected]/ 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 be74672..b08eaa1 100644 --- a/meta/recipes-kernel/linux/cve-exclusion.inc +++ b/meta/recipes-kernel/linux/cve-exclusion.inc @@ -221,3 +221,11 @@ exploitation requires a relative kernel.core_pattern" # https://bugzilla.redhat.com/show_bug.cgi?id=2044575 CVE_STATUS[CVE-2022-0400] = "disputed: the reported net/smc out-of-bounds read \ was never substantiated and was closed as not-a-bug by Red Hat, SUSE and Debian" + +# 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
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#243230): https://lists.openembedded.org/g/openembedded-core/message/243230 Mute This Topic: https://lists.openembedded.org/mt/120714055/21656 Group Owner: [email protected] Unsubscribe: https://lists.openembedded.org/g/openembedded-core/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
