From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAC4C330D4C for ; Fri, 8 May 2026 13:14:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778246081; cv=none; b=U0uKiMLq/c5qJlxx7+Bo7qk0F4/+N+sfz3vkubY3nSI2WDIRPK6Q4Tfd7xPnDlQcYAdhd+iTOEqPmtDCA4uR0qGM4Bbhxon6AWkcGVZCacwj5VkMj5N1zY4lrO3Ytv35RZu5iwcbRniL2l9SZ39b6qh96baf2jSftjn3uCJJx2o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778246081; c=relaxed/simple; bh=b/dI2I6eDi6XA7zpAcGCheZ08l2j0ixhPV0IPN2VSPA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=qsPqdXxF4i29dHKwLPF7jD8KjH7RCb16Kx5qHoF43US7uKF9bQbbBC9Txkqddf2r+RV18/J1Ap7UFbCZHU9TAhNDk6WD4QS9O2G/MGsQSbcTMjamx2a1NO7ayPLiTIKgDS2udk9+tTkzlUYMZrdNU1xyhV6edyIvBECzrXMGkP0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=VgVlrPZa; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="VgVlrPZa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6F552C2BCB0; Fri, 8 May 2026 13:14:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778246081; bh=b/dI2I6eDi6XA7zpAcGCheZ08l2j0ixhPV0IPN2VSPA=; h=From:To:Cc:Subject:Date:Reply-To:From; b=VgVlrPZaXJM9zFyHb/xRRjcCfhjLNFDmwzEjp8gi7sCGieX8dUswjBfIYbyntJiCV nMHIN0HJORPeKEvO175+35nXoJPteRxOJbSJl1YxJLIJi50Z+DebUd3lymOBwHEcgS WlF7/PP25AY443RnPPTbzQqgj9vJgD82hw5yoLVs= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43308: btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref() Date: Fri, 8 May 2026 15:12:13 +0200 Message-ID: <2026050859-CVE-2026-43308-2522@gregkh> X-Mailer: git-send-email 2.54.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1696; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=4Onkx7u9fnT3g78iPt1jBhhvRQ+y4UquIHTMQQTaT8o=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/H8rPP926nr3xlrtbQGdJgZ9No0X8gXL249GXOj//O G2rXPurI5aFQZCJQVZMkeXLNp6j+ysOKXoZ2p6GmcPKBDKEgYtTACay8QfDPL036638A1iTtq5/ +vtI+YX73vevCDIsOHdd9IXakifXS9huTz/CNmfD43da1gA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref() There is no need to BUG(), we can just return an error and log an error message. The Linux kernel CVE team has assigned CVE-2026-43308 to this issue. Affected and fixed versions =========================== Fixed in 6.19.6 with commit 5549743e11c06da23cfa7712a994b9f1e69064c6 Fixed in 7.0 with commit c7d1d4ff56744074e005771aff193b927392d51f Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-43308 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: fs/btrfs/extent-tree.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/5549743e11c06da23cfa7712a994b9f1e69064c6 https://git.kernel.org/stable/c/c7d1d4ff56744074e005771aff193b927392d51f