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Foglietta" Date: Tue, 5 May 2026 00:15:49 +0200 X-Gm-Features: AVHnY4JjIaG3vAQ3TP3UQTp9aolvSCvnHkf4zK1zeyJAQjXab96yM-5VEGiOXdo Message-ID: Subject: Re: Isar v1.1 Release Candidate 2 To: Zhihang Wei Cc: isar-users Content-Type: text/plain; charset="UTF-8" X-Original-Sender: roberto.foglietta@gmail.com X-Original-Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@gmail.com header.s=20251104 header.b="B8n/sj7b"; arc=pass (i=1); spf=pass (google.com: domain of roberto.foglietta@gmail.com designates 2607:f8b0:4864:20::1129 as permitted sender) smtp.mailfrom=roberto.foglietta@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com; dara=pass header.i=@googlegroups.com Precedence: list Mailing-list: list isar-users@googlegroups.com; contact isar-users+owners@googlegroups.com List-ID: X-Spam-Checked-In-Group: isar-users@googlegroups.com X-Google-Group-Id: 914930254986 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , X-Spam-Status: No, score=-3.7 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,FORGED_GMAIL_RCVD, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,RCVD_IN_RP_CERTIFIED,RCVD_IN_RP_RNBL,RCVD_IN_RP_SAFE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on shymkent.ilbers.de X-TUID: ObpkTCiflBft On Mon, 4 May 2026 at 12:02, Zhihang Wei wrote: > > Hi everyone, > > I have just tagged v1.1-rc2 as release candidate 2 for Isar v1.1. > > Please test on your downstream if necessary. Feedback is welcome. > Hi, I propose you consider a couple of patches of mine for busybox to include in ISAR as external patches. WHY APPLY THIS ONE IN PARTICULAR? https://github.com/robang74/busybox/blob/master/TODO.md#awk In this case, using awk w/ CONVFMT and a properly forged text string containing %1337c%n due to arbitrary of 1337 (at my will) and %n property I could **POTENTIALLY** escalate the privileges to root. In fact busybox is a single binary usually with SUID attribute and the fork() brings the whole process in memory usually in CoW mode, including those applets that can run with root privileges by SUID (cfr. man chmod +s). URL: https://github.com/robang74/busybox/tree/master/patches patches/ - 0002-awk-minimalist-approach-to-fix-some-unsupported-cases-v4.patch awk: numeric identifiers full recognition, +65b (patchset v4) Fixing: two major issues like walking %016llx and writing %n Extend: support for "%fpx", keep "pi:%f" and earn "pi: %f deg" Testing: editors/awk_printx_tests.sh added new (only visual) ./busybox awk 'BEGIN { CONVFMT="%nf"; x=3.14; print x "" }'; ./busybox awk 'BEGIN { CONVFMT="%.2f OK f"; x=3.14; print x "" }'; ./busybox awk 'BEGIN { CONVFMT="%.2fpi %016llx f"; x=3.14; print x "" }'; ./busybox awk 'BEGIN { CONVFMT="walk: %.2fpi %016llx "; x=3.14; print x "" }' ./busybox awk 'BEGIN { CONVFMT="OK pi: %.2fx"; x=3.14; print x "" }' ./busybox awk 'BEGIN { CONVFMT="%.2fOKpi"; x=3.14; print x "" }' text data bss dec hex filename 19338 0 0 19338 4b8a editors/awk.o Fixing: +51 19389 0 0 19389 4bbd editors/awk.o Extend: +16 19405 0 0 19405 4bcd editors/awk.o Coding: -2 19403 0 0 19403 4bcb editors/awk.o -- Roberto A. Foglietta +49.176.274.75.661 +39.349.33.30.697 -- You received this message because you are subscribed to the Google Groups "isar-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to isar-users+unsubscribe@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/isar-users/CAJGKYO4t332j3FL01uVVC-m8A73sNaJdF9bHNVz1ziwYxW%2B2yA%40mail.gmail.com.