From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f199.google.com (mail-oi1-f199.google.com [209.85.167.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 09D5D371D10 for ; Thu, 17 Sep 2026 03:04:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789614248; cv=none; b=N0r2rLQcbZ/GSboYtOkVHQ6eItEtWTD1XJYYI7bbTMr2Rhh3Fz+N2RasEckU4yeb1NYl3+7oyR3YEXwQJXUr6EXCj6vkUUmpinWWRSO1z9NlP+L/DZn5wbM/o8S99zyhu96J4lzZgo0KxnUfZabaxGwlxKvCLCVAGaiu6tbCWXY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789614248; c=relaxed/simple; bh=P76xO90eZRwEStPD3xSfw7NbQ9aZhoCabvd0KiIIDVc=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=QescxQFXvWWUum7fxY0TH+IRuOxR7m6cgd2tiAR07//UDbJwIC/fKB3grMzmiriOraafH4hOfshXPS1AmCEN7KfvDN2tszfrEE+uvbRdfAEdDXEnWpiTvhjAijvW96EWseRLHrjqyLJtiSK+c0pNabK/LlZk/rtqXH9CdlKxVZ8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.167.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oi1-f199.google.com with SMTP id 5614622812f47-4ab260600easo417786b6e.1 for ; Wed, 16 Sep 2026 20:04:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789614240; x=1790219040; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=rz7QuDGKl35y+BiiVFclwvQuIE6OvDIPA+dETMbWo+I=; b=nXL8YBncfgOH3/S8qvPYTwyCJvekvIpy0+0qKTgEkv/aSSMt7FgO6q944KNIC6Lso5 xW8RRflUvCj6bWDlDYk0FYXYh4fDMse38niNoXBjIYkqT459+7UODcacp0MhZHys4G19 NT07XOxxTpiKla03Jgr9yPyfmB1Fmah5G6yOUbOtATCxWTdV1Smr6Bazc0vdGqtoIPlK /zE9nBXkKWUYyE2nJuIGsBuoyPgxu2jjO95K28oRGy6QY0ZjI7IFmLEA98PxXSF7GacL ZrXDpNgV2hEENiTSN5t6B1E1K/CzF8Tm/4z4TrSdILQZ2PgX9UxBup2L1K3TgK6w3Hak jwog== X-Gm-Message-State: AFuF++nWnEM4bnRYXHEWtbzrG1aBf8dpAmrVg/coai57/85XrQAur49a 7dnaS0QpYPPs5+VbTvIGGoc7rcUYen84531/mjFMks/J05O4ntwD/cMeWuU0aUbr2biGtonai/o l40oCjm+00ZMzamJkdBUpbr3V0zat1SQIn08dFIsM5wI0poGXEK8SKC39KVo= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:2219:b0:6b0:ab1f:ebf8 with SMTP id 006d021491bc7-6c8f8a2febbmr1443274eaf.0.1789614240392; Wed, 16 Sep 2026 20:04:00 -0700 (PDT) Date: Wed, 16 Sep 2026 20:04:00 -0700 In-Reply-To: <6aaabb70.86093f18.33004f.0003.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aab58a0.71f81b7d.278072.000b.GAE@google.com> Subject: Forwarded: Re: KASAN: slab-out-of-bounds Read in ecryptfs_verify_auth_tok_from_key From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: KASAN: slab-out-of-bounds Read in ecryptfs_verify_auth_tok_from_key Author: neganhat@gmail.com #syz test: upstream master diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h index 58165928ed1e..3baccd4143e8 100644 --- a/fs/ecryptfs/ecryptfs_kernel.h +++ b/fs/ecryptfs/ecryptfs_kernel.h @@ -124,6 +124,9 @@ ecryptfs_get_key_payload_data(struct key *key) if (!ukp) return ERR_PTR(-EKEYREVOKED); + if (ukp->datalen < sizeof(struct ecryptfs_auth_tok)) + return ERR_PTR(-EINVAL); + return (struct ecryptfs_auth_tok *)ukp->data; }