From patchwork Mon Aug 3 08:48:22 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Junjie Cao X-Patchwork-Id: 94290 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3755EC55175 for ; Mon, 3 Aug 2026 08:49:58 +0000 (UTC) Received: from out-177.mta0.migadu.com (out-177.mta0.migadu.com [91.218.175.177]) by mx.groups.io with SMTP id smtpd.msgproc02-g2.39077.1785746997393580999 for ; Mon, 03 Aug 2026 01:49:57 -0700 Authentication-Results: mx.groups.io; dkim=fail reason="dkim: body hash did not verify" header.i=@linux.dev header.s=key1 header.b=QeSiBtaK; spf=pass (domain: linux.dev, ip: 91.218.175.177, mailfrom: junjie.cao@linux.dev) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1785746995; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=PTx+5SaOOeACOLVOogdEN5GezcLEA8jP6JOscJQarbY=; b=QeSiBtaKMqb0sqpPFaNkDTcV3lCbyc0IwchyTn9RTPjy8twl/vj+KAK1Pycolpe/lNUl8I 9+hqsehulfiG4J7AIJk0pAUJaZ8bapgpxwWb29Koi72YkPh5x/BKxwtWjrzwh1rgtwG3mV IO34gKvfUl6o2neMHpTTD4hGldPSQ+0= From: Junjie Cao To: openembedded-core@lists.openembedded.org Cc: paul@pbarker.dev, randy.macleod@windriver.com, Venkata.Navuduri@windriver.com Subject: [OE-core][PATCH v2 05/10] cve-exclusion: set status for CVE-2022-1247 Date: Mon, 3 Aug 2026 01:48:22 -0700 Message-ID: <20260803084827.1348810-6-junjie.cao@linux.dev> In-Reply-To: <20260803084827.1348810-1-junjie.cao@linux.dev> References: <20260803084827.1348810-1-junjie.cao@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Mon, 03 Aug 2026 08:49:58 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/242631 The CVE describes a race between rose_connect() and the code that frees a rose_neigh once its count and use fields reach zero. Takamitsu Iwai's August 2025 series converts that field to a proper reference count and removes the unlocked increment in rose_connect() which is exactly the operation 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) The first commit message states the premise of the CVE almost verbatim: "The 'use' field in struct rose_neigh is used as a reference counter but lacks atomicity. This can lead to race conditions where a rose_neigh structure is freed while still being referenced by other code paths", and its diff deletes the "rose->neighbour->use++;" statement from rose_connect(). The second merges the separate count and use counters, which is the other half of the condition described by the CVE, and closes a syzbot-reported slab-use-after-free. 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. Kernels from v7.1 onwards are unaffected by construction, since the AX.25 and hamradio subsystems were removed: https://git.kernel.org/linus/dd8d4bc28ad7252610d8e79c1313a2d1e3499a51 The commits predate the association of this CVE with any fix, so no tracker links them yet - Ubuntu, Debian and Red Hat all still show the CVE as open. The identification above is based on the commit contents matching the CVE description; the two 2022 rose patches from Duoming Zhou that Ubuntu's tracker references fix different rose bugs and are not the fix for this issue. CC: Paul Barker AI-Generated: Uses Claude (claude-opus-5) Signed-off-by: Junjie Cao --- changes in v2: - split out of the single combined patch, one CVE per patch as requested - added primary source links (disclosures, distribution trackers, mailing list threads, upstream commits) to every commit message - added the three CVEs with no upstream fix as "unpatched" entries instead of leaving them undocumented - disclosed AI assistance per the contributor guide v1: https://lore.kernel.org/openembedded-core/20260802143444.1178575-1-junjie.cao@linux.dev/ meta/recipes-kernel/linux/cve-exclusion.inc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/meta/recipes-kernel/linux/cve-exclusion.inc b/meta/recipes-kernel/linux/cve-exclusion.inc index 0ae3a0d6..7547cdfd 100644 --- a/meta/recipes-kernel/linux/cve-exclusion.inc +++ b/meta/recipes-kernel/linux/cve-exclusion.inc @@ -219,3 +219,9 @@ several attempts, 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" + +# Fix https://git.kernel.org/linus/d860d1faa6b2ce3becfdb8b0c2b048ad31800061 +# Fix https://git.kernel.org/linus/da9c9c877597170b929a6121a68dcd3dd9a80f45 +# Also in 6.1.150, 6.6.104, 6.12.y and 6.16.5 via the 2025-09-02 stable round. +# The rose/hamradio subsystem was removed entirely in v7.1 (dd8d4bc28ad7). +CVE_STATUS[CVE-2022-1247] = "fixed-version: Fixed from version 6.17"