From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 0125B40628C for ; Wed, 27 May 2026 13:02:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779886975; cv=none; b=etb8UdUYqecYtBaFCg+5ly/B98RPVxA/h/Wgv0Y+49j8MwiSE67dMvDnrjEf+MtY6pI6v+V6vXIYgFe66IIn5WDC/0/7XMsj7gL1wfQW/0QvSYOl2uEzLuXQXEF9mC+l8QXYONNlQwSCuWHRgHCTr1ox+HtC3DqX2qG51SRcKhc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779886975; c=relaxed/simple; bh=u7Xn3SlyOzrCZBuYp+c6ad2ltIA4uNm9+cKQW3eNVqE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=rjmggIAsdAhCksJOUoo06fmHp5R8tSsX5JBoSGf3SwiQWQCEnFszGj2lI2+uLGCOH5OCJRYkM7tykOL2mkmWX2OxKCzuBYNaSgz94CwwYJ0e+g03ClvUuaQLX3nysMzXly5TIBEEjyUM0s6LFzoCS7jKaJ5kH6lJxi8epilSZaM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=e0DR36jm; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="e0DR36jm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 12A7F1F000E9; Wed, 27 May 2026 13:02:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779886973; bh=ZanHXJSn5Gg2Jsob4qhz4OYOxqeSurqhchW19hAZv2U=; h=From:To:Cc:Subject:Date:Reply-To; b=e0DR36jmzybg6dU9/UcHsA8fDWEMddOujlSNtKFg49Z3tgcKvsejaQsGZIC/voKP8 WFT1wXuBQcaKccgZk6ZViuSMwdX/Zw1XuVp8LPzSnv5xO3BS6yo8qEJEVqGRXC+cXQ spgYo62RCQMT2AkJ+qUaIml5aoQLa2T5LghAPg/E= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-46039: rxgk: Fix potential integer overflow in length check Date: Wed, 27 May 2026 14:59:30 +0200 Message-ID: <2026052751-CVE-2026-46039-e5c2@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=2306; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=zbW0Dd+cfV7FfzBvHawy9YaNlTyYYLEc5GBPrK0yDgY=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlir7pP3126NjhR/4SXk9O+bwcyf124w77j6dMZV7ksf 9fyT6n80RHLwiDIxCArpsjyZRvP0f0VhxS9DG1Pw8xhZQIZwsDFKQATKY5jWLC2aq9uWM32SdYR bxO9bd66F6TqrGSYZ72gRf9aWSZLyLKDrxfufmmjcVJFBwA= 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: rxgk: Fix potential integer overflow in length check Fix potential integer overflow in rxgk_extract_token() when checking the length of the ticket. Rather than rounding up the value to be tested (which might overflow), round down the size of the available data. The Linux kernel CVE team has assigned CVE-2026-46039 to this issue. Affected and fixed versions =========================== Issue introduced in 6.17 with commit 2429a197648178cd4dc930a9d87c13c547460564 and fixed in 6.18.27 with commit 43222ac484f93b3ec2d240a7575e1cedd31f5fa4 Issue introduced in 6.17 with commit 2429a197648178cd4dc930a9d87c13c547460564 and fixed in 7.0.4 with commit 183d37f12d1c8ed24a5bfc7addad05510da22a94 Issue introduced in 6.17 with commit 2429a197648178cd4dc930a9d87c13c547460564 and fixed in 7.1-rc1 with commit 6929350080f4da292d111a3b33e53138fee51cec Issue introduced in 6.16.9 with commit 71571e187106631a8127f2dde780f35caa358d33 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-2026-46039 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: net/rxrpc/rxgk_app.c net/rxrpc/rxgk_common.h 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/43222ac484f93b3ec2d240a7575e1cedd31f5fa4 https://git.kernel.org/stable/c/183d37f12d1c8ed24a5bfc7addad05510da22a94 https://git.kernel.org/stable/c/6929350080f4da292d111a3b33e53138fee51cec