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 EC249582BB8 for ; Fri, 11 Sep 2026 19:51:18 +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=1789156289; cv=none; b=q/k+C8n73tRJIfTVSJ43Jiuxf4EHvDBkaAsITwnG4rU31u1ZEz5vY3wgG+sgQSOlxbdF6hw1D+bcnh9ImS4Z1voimy/Jjmx6uepgVbpXb1N5OTpR020aFBYR0dh4Xex73EKDyTBojbmB5NV1JCLg3pSY1fAKUoTLo4sj6baAHUI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789156289; c=relaxed/simple; bh=Rff0KoLoUEtyf/7k0Mbc9bIjMdka++htG4254V8Spcg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=n5JVO+s3yfciqzCoeFloYHC6YjdWimMfAMa/xAuRjEHcfnKbZpujaqI0YaDpS0DSXWyqY44GYbpDCWhWxKb088WLuj1Tm0IyF8P/E60m3PHAd8NR/q88pSrVT0HYQtfps6UuPWA+sWeoLehANI8+tPpqWysX0r1HWjsHffD9M4E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=xkm4dx+5; 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="xkm4dx+5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 824161F0089A; Fri, 11 Sep 2026 19:51:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789156278; bh=VR8o4V+qvvHJZDzeYyS/awRokRvLi4wRk+TkLiV1qLI=; h=From:To:Cc:Subject:Date:Reply-To; b=xkm4dx+5Gge7Dr4KWB7wCI7od3r88wTshPAEgNKhb+1RRZbbj7K7LORPXDPzmJvYl 5BevlItFN9HNbtTnVwTnzGOQa5OSbP/uDpuSMV7eB8jn2YV9Wg+iLcKThTZTHAG+s1 IAAO+UWyTjyZPrOzByZdcdqDMNU/ZPNHtI3A/h78= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-89463: power: supply: ucs1002: fix use-after-free on remove Date: Fri, 11 Sep 2026 21:42:32 +0200 Message-ID: <2026091101-CVE-2026-89463-d81c@gregkh> X-Mailer: git-send-email 2.55.0 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=2927; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=pe9BI0ZRgglyy8dR+CzpgUxbet2zIvg0DqZhnL17IgE=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlLIn0fCe56cuo0i1JicHfxPKau3+9tU3p/MEyOqXtnu VnrqGF1RywLgyATg6yYIsuXbTxH91ccUvQytD0NM4eVCWQIAxenAEzkgz7DPEW9Q2xPYmVf2thM Ps1oof6ZOc+qmWHBytY1kg5R5b3ie15fPP294fqMNwkeAA== 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: power: supply: ucs1002: fix use-after-free on remove ucs1002 has no remove callback, so unbind runs entirely through devm. The alert IRQ handler queues the health_poll delayed work, and the work reschedules itself while the chip reports a bad-health condition. devm frees the alert IRQ, which only synchronizes the handler; it does not cancel the delayed work, which can then run after devm frees the driver data and dereference it. Register health_poll with devm_delayed_work_autocancel() before the alert IRQ is requested. devm then frees the IRQ before cancelling the work, so the handler can no longer queue it and the work is cancelled before the driver data is freed. This issue was found by an in-house static analysis tool. The Linux kernel CVE team has assigned CVE-2026-89463 to this issue. Affected and fixed versions =========================== Issue introduced in 5.10 with commit 81196e2e57fc5b88f6b8ca98372a3dde047aa49d and fixed in 6.12.109 with commit 4ca2a4678202f15eb790eb7f1d562061709caea7 Issue introduced in 5.10 with commit 81196e2e57fc5b88f6b8ca98372a3dde047aa49d and fixed in 6.18.50 with commit 39b60d615dfa1725c235351fb12bc72e5f8a8d32 Issue introduced in 5.10 with commit 81196e2e57fc5b88f6b8ca98372a3dde047aa49d and fixed in 7.2.4 with commit 35242c93d35f391afdc84cef6236b8ad57f1df24 Issue introduced in 5.10 with commit 81196e2e57fc5b88f6b8ca98372a3dde047aa49d and fixed in 7.3-rc1 with commit 609af0ceeaefdfa42cd01dd060b20f2e41f9a232 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-2026-89463 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/power/supply/ucs1002_power.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/4ca2a4678202f15eb790eb7f1d562061709caea7 https://git.kernel.org/stable/c/39b60d615dfa1725c235351fb12bc72e5f8a8d32 https://git.kernel.org/stable/c/35242c93d35f391afdc84cef6236b8ad57f1df24 https://git.kernel.org/stable/c/609af0ceeaefdfa42cd01dd060b20f2e41f9a232