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 CF3173E5EF6 for ; Fri, 8 May 2026 13:26:41 +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=1778246801; cv=none; b=qm/Ab2jF0WN7VQEAhTSSkRcv4PO7KvevmBlig/oGRxFLqDOD+ax8YgSLscUovhL9iADnsXLaG0JnZlROF2gNcYBKFEfNtn8S9kUBJf+BvEZ6TiHcfstUZIXFWSOfhSmB6kKDsf/vgZlkF9SYtLwp/gChMZrt+cZWTUyflRsP1dc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778246801; c=relaxed/simple; bh=oO23xPU2TH+LJkMbrlUQOtCRXKekjNmIqzuIWONVkP4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=OhQwDj0PQv8PF2sFZXgGraAddXyyctKfN+RBPAJdUl3dwF0evujg6f09m2oJCNZ1uRtoSMAgPtyJw2lxkr02eh0H8htKkVcRyYYH5h7+EI4IVIeUcvNwTnIiGTpuG1IXn9eobiFS3XTe8OprtdrNfBVpNvceGJCERr5S3RS5lNM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=E6MaRwDS; 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="E6MaRwDS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C658BC2BCB0; Fri, 8 May 2026 13:26:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778246801; bh=oO23xPU2TH+LJkMbrlUQOtCRXKekjNmIqzuIWONVkP4=; h=From:To:Cc:Subject:Date:Reply-To:From; b=E6MaRwDSHLtJgTr63+3RPI5ehfXVwmi5iIDoJWjkiicu0VBcL3JsJjrkHEakNAanF D9bp8C9QEv3YtLg+45cgxAZ7XadVk1b2BAaRD310Ur3VpyaRDFXpPHz4ApwTHT3Hyc jMj9jjV1ayJiKkNUcm2n6PJqzcu9HEZP7xRPEBpE= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43321: bpf: Properly mark live registers for indirect jumps Date: Fri, 8 May 2026 15:26:24 +0200 Message-ID: <2026050819-CVE-2026-43321-6554@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=1861; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=mIVcuhC59rZ4VZOrh8Shoqnj9pWl6fwSXV1JNkAhxyU=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/n1TP9X5f8EJiV0Z0lPW22g2+2w0TH4vs1lb9oLVrl 4HcdptZHbEsDIJMDLJiiixftvEc3V9xSNHL0PY0zBxWJpAhDFycAjCRxm8Mczj7da4b+1Sci1b8 J3J2flHzGpvdnQwLlrdYnM7/cZZvUtfJem+FjV+SloodBQA= 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: bpf: Properly mark live registers for indirect jumps For a `gotox rX` instruction the rX register should be marked as used in the compute_insn_live_regs() function. Fix this. The Linux kernel CVE team has assigned CVE-2026-43321 to this issue. Affected and fixed versions =========================== Fixed in 6.18.16 with commit df02c3ff3be4bf998812c8c8e79d10db1329d535 Fixed in 6.19.6 with commit 7beae54111c34ca63357ef120e115889b915beb5 Fixed in 7.0 with commit d1aab1ca576c90192ba961094d51b0be6355a4d6 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-2026-43321 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: kernel/bpf/verifier.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/df02c3ff3be4bf998812c8c8e79d10db1329d535 https://git.kernel.org/stable/c/7beae54111c34ca63357ef120e115889b915beb5 https://git.kernel.org/stable/c/d1aab1ca576c90192ba961094d51b0be6355a4d6