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 F1A0414E2D1 for ; Mon, 26 Feb 2024 14:39:25 +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=1708958366; cv=none; b=BZAzjq6k7wiN17ABs9Mjsc3Vi+rOnkCbhUeIz56i2dgnWrHt6LTvuoE8lxRLl+wwPHWKEPcc5MkDrplf6TtiQKab2ZqliKbHcy0sVNafmDFR+z+ls4/cnUWU4lMey2kgCAJ8YnuA2bAaJTytsmiidgN8OAqSDmytIRgNuZZhSR0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708958366; c=relaxed/simple; bh=2+NxW9wLA8lTSXCoqfNysOwySXRFDeAEbCUtELDmt3U=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=OmpXsgPULlrAEldqZsQmGl2WnfapwozfzcAFoN8EscvMMH98Boor04qmMUPiXi7wNWvVAxHyaS8Fh23bZewRTxEhxRCTCWxXjfnx/BYr75Lzf1Ha3KYIbBqQ1gp+Lkgs+6Ql87pt2obv8MH4zDsysg5P4nZhYx8GuNpoNj2h8V8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=fZI0HiJ0; 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="fZI0HiJ0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 43D4FC433F1; Mon, 26 Feb 2024 14:39:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708958365; bh=2+NxW9wLA8lTSXCoqfNysOwySXRFDeAEbCUtELDmt3U=; h=From:To:Cc:Subject:Date:Reply-to:From; b=fZI0HiJ0TvDTrqjUZGRliDPWUuMnkuCJZCsw+p30TN7uev1b8IWJGqcgN86PL5NLQ IFCPdhcrItabpgmefeLcuXSNZOdncrwAG5VWsfT257VvYJ9vNd59o7+Ln2uXlxdDr1 XufPT590Clmj3n7g8tf8ePwigMbH66JSVMaxTBRg= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2024-26606: binder: signal epoll threads of self-work Date: Mon, 26 Feb 2024 15:39:20 +0100 Message-ID: <2024022620-CVE-2024-26606-64b6@gregkh> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=3251; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=2+NxW9wLA8lTSXCoqfNysOwySXRFDeAEbCUtELDmt3U=; b=owGbwMvMwCRo6H6F97bub03G02pJDKl3Fs3QWf5eK0Djwm513q87bC+u7TW3+fk88Zt4UqOXq lVSR0V4RywLgyATg6yYIsuXbTxH91ccUvQytD0NM4eVCWQIAxenAEzk0FGGBSdm8ORLbIvt/aw5 Sf9l+bXDGmtl5zEsWKNyy+/Wh2d7urov6TQdYxB8VexxCwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: binder: signal epoll threads of self-work In (e)poll mode, threads often depend on I/O events to determine when data is ready for consumption. Within binder, a thread may initiate a command via BINDER_WRITE_READ without a read buffer and then make use of epoll_wait() or similar to consume any responses afterwards. It is then crucial that epoll threads are signaled via wakeup when they queue their own work. Otherwise, they risk waiting indefinitely for an event leaving their work unhandled. What is worse, subsequent commands won't trigger a wakeup either as the thread has pending work. The Linux kernel CVE team has assigned CVE-2024-26606 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.29 with commit 457b9a6f09f0 and fixed in 4.19.307 with commit dd64bb8329ce Issue introduced in 2.6.29 with commit 457b9a6f09f0 and fixed in 5.4.269 with commit 42beab162dce Issue introduced in 2.6.29 with commit 457b9a6f09f0 and fixed in 5.10.210 with commit a423042052ec Issue introduced in 2.6.29 with commit 457b9a6f09f0 and fixed in 5.15.149 with commit 82722b453dc2 Issue introduced in 2.6.29 with commit 457b9a6f09f0 and fixed in 6.1.79 with commit 90e09c016d72 Issue introduced in 2.6.29 with commit 457b9a6f09f0 and fixed in 6.6.18 with commit a7ae586f6f60 Issue introduced in 2.6.29 with commit 457b9a6f09f0 and fixed in 6.7.6 with commit 93b372c39c40 Issue introduced in 2.6.29 with commit 457b9a6f09f0 and fixed in 6.8-rc3 with commit 97830f3c3088 Please see https://www.kernel.org or 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-2024-26606 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: drivers/android/binder.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/dd64bb8329ce0ea27bc557e4160c2688835402ac https://git.kernel.org/stable/c/42beab162dcee1e691ee4934292d51581c29df61 https://git.kernel.org/stable/c/a423042052ec2bdbf1e552e621e6a768922363cc https://git.kernel.org/stable/c/82722b453dc2f967b172603e389ee7dc1b3137cc https://git.kernel.org/stable/c/90e09c016d72b91e76de25f71c7b93d94cc3c769 https://git.kernel.org/stable/c/a7ae586f6f6024f490b8546c8c84670f96bb9b68 https://git.kernel.org/stable/c/93b372c39c40cbf179e56621e6bc48240943af69 https://git.kernel.org/stable/c/97830f3c3088638ff90b20dfba2eb4d487bf14d7