From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_ADSP_CUSTOM_MED,
	DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI
	autolearn=ham autolearn_force=no version=3.4.4
Received: (qmail 16831 invoked from network); 11 Jan 2023 17:13:25 -0000
Received: from minnie.tuhs.org (50.116.15.146)
  by inbox.vuxu.org with ESMTPUTF8; 11 Jan 2023 17:13:25 -0000
Received: from minnie.tuhs.org (localhost [IPv6:::1])
	by minnie.tuhs.org (Postfix) with ESMTP id 97808417A9;
	Thu, 12 Jan 2023 03:13:18 +1000 (AEST)
Received: from mail-lf1-f44.google.com (mail-lf1-f44.google.com [209.85.167.44])
	by minnie.tuhs.org (Postfix) with ESMTPS id 5ACA641754
	for <tuhs@tuhs.org>; Thu, 12 Jan 2023 03:13:07 +1000 (AEST)
Received: by mail-lf1-f44.google.com with SMTP id b3so24568333lfv.2
        for <tuhs@tuhs.org>; Wed, 11 Jan 2023 09:13:07 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20210112;
        h=to:subject:message-id:date:from:mime-version:from:to:cc:subject
         :date:message-id:reply-to;
        bh=66j0R+p3NrK9AwGtcwHqnu4y+T9NmEVc+f5V4x3XV3s=;
        b=LA2FE2no5lxbhH03bOydyHkqyt1ZwQKT0cwYV8J8qJEqo/i2kQRJxzoFmJnLgekfEu
         tiu50QQAtl5s/l6vj7SZDEsxUszKZFbD7810EHqJAs4GIJDlv46ZTpk5Z3JQMe/0BV+U
         Af30nA8CGkcWkR7sTdirMLcu+j87hfMN5jPbzanEb04/Yi3OqRbasdd+Gkurmg0h5INa
         kjJoZFBT3tsFRTpJ47FzsymOL0WBNL4w9RYBfFS4tSZT1wBDQLx5PXc9f7Ury3rtvQUY
         k7IpT3wmCGxTKZVoySxVS/COyA6kT48oP42mBWJzX4KlOn7p6V4jOOZrtHulXR59C9F2
         wBwQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20210112;
        h=to:subject:message-id:date:from:mime-version:x-gm-message-state
         :from:to:cc:subject:date:message-id:reply-to;
        bh=66j0R+p3NrK9AwGtcwHqnu4y+T9NmEVc+f5V4x3XV3s=;
        b=eoh4H+JDuYza5u+P9ArjzURUv8AVJBU+snUdAVpqRnFIb6F5YePwRSakXifDVcdYOU
         tw+1juMRCnBuedOicWj1SibWjuF3RSHTh30sucWAvbMzCusJ/qgDGf+LykR7HHzKE22F
         1SRbWhws/v4etFl7CkyuNgM5NmqF8RyF5G6V4JRNGx0mdm6LG6JQ2x6DfM16W3tkh0dG
         ukIFsLKBcqc9Fll1JcGMC5+aHRezQAqlfXJogZ/n+HJaXB21N2vxDtbL/LLOJiZr7eZy
         OvzHPlxooCt6DmXGTKLBuD4XZGVdNuBg0po5bPazoqGhhf5bqZ+ylAb6fu8jdry0Ublz
         nPeg==
X-Gm-Message-State: AFqh2kq09dZhJtdYzh231DT55A4rPSCwLOAPtcgk7zw+sFiF2YkePArk
	Sjxy8endsdZJrj9TonwftAdytSymqvffj5GuKlu8M0F0
X-Google-Smtp-Source: AMrXdXtnNAJ+yCV1QVPVVgmx+zNwrGtgaBytPlYttLi4RgjPpdejy8NMrKDuTuDS4suooef3IfF0J59ROYb/D2zlxwk=
X-Received: by 2002:a05:6512:2211:b0:4cc:5c68:3b1 with SMTP id
 h17-20020a056512221100b004cc5c6803b1mr1522450lfu.603.1673457125031; Wed, 11
 Jan 2023 09:12:05 -0800 (PST)
MIME-Version: 1.0
From: Dan Cross <crossd@gmail.com>
Date: Wed, 11 Jan 2023 12:11:28 -0500
Message-ID: <CAEoi9W5rnakOGAOh0ChnGi7RvjYbBwM=pGP9BF_EmVMY2Bv7Sg@mail.gmail.com>
To: TUHS <tuhs@tuhs.org>
Content-Type: text/plain; charset="UTF-8"
Message-ID-Hash: EBTVHGKAMTJXPQWDFYYSHD4X7KMLMYTD
X-Message-ID-Hash: EBTVHGKAMTJXPQWDFYYSHD4X7KMLMYTD
X-MailFrom: crossd@gmail.com
X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header
X-Mailman-Version: 3.3.6b1
Precedence: list
Subject: [TUHS] In search of SunOS 4-era security advisory.
List-Id: The Unix Heritage Society mailing list <tuhs.tuhs.org>
Archived-At: <https://www.tuhs.org/mailman3/hyperkitty/list/tuhs@tuhs.org/message/EBTVHGKAMTJXPQWDFYYSHD4X7KMLMYTD/>
List-Archive: <https://www.tuhs.org/mailman3/hyperkitty/list/tuhs@tuhs.org/>
List-Help: <mailto:tuhs-request@tuhs.org?subject=help>
List-Owner: <mailto:tuhs-owner@tuhs.org>
List-Post: <mailto:tuhs@tuhs.org>
List-Subscribe: <mailto:tuhs-join@tuhs.org>
List-Unsubscribe: <mailto:tuhs-leave@tuhs.org>

The security vulnerability in question could be briefly summarized as,
"Fortran divide-by-zero gives root." I think that was just a specific
manifestation of the underlying problem, though. More specifically it
was actually due to failure to sanitize state after handling a SIGFPE
(and possibly other signals as well?).

I have a distinct memory of this, but can no longer find any evidence
for it. Did I just make it up from whole cloth, or was this actually a
thing?

        - Dan C.