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 <[email protected]> AI-Generated: Uses Claude (claude-opus-5) Signed-off-by: Junjie Cao <[email protected]> --- v4: - simplify the explanation as suggested; reference the original report instead of arguing from the commit diffs v3: 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 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
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