From patchwork Thu Oct 29 10:30:11 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hetvi Thakar -X (hthakar - E INFOCHIPS PRIVATE LIMITED at Cisco)" X-Patchwork-Id: 102371 Received: from rcdn-iport-8.cisco.com (rcdn-iport-8.cisco.com [173.37.86.79]) by mx.groups.io with SMTP id smtpd.msgproc02-g2.8730.1793269814735903056 for ; Thu, 29 Oct 2026 03:30:14 -0700 Authentication-Results: mx.groups.io; dkim=fail reason="dkim: message contains an insecure body length tag" header.i=@cisco.com header.s=iport01 header.b=AAoD9dMf; spf=pass (domain: cisco.com, ip: 173.37.86.79, mailfrom: hthakar@cisco.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cisco.com; i=@cisco.com; l=5202; q=dns/txt; s=iport01; t=1793269814; x=1794479414; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=2mjoNzHsHFVo0MyhDHqLlq/XYB6dKQkDj/Q2JQkvebE=; b=AAoD9dMf6yVrcT2gKuyf7aOEHlxwdw3yjQrLSaBvavsHIY1dP/Rhp155 X56IoZyljnsRl9Ar6lqwfJz7yBbMQbnLdK5dF4a03sAoggH989cjf82Pa HLIYM240UtiCk1Ld+KUuTiHXcHZ/Q/oRmsmKlE3q9ZfT9TFqXpGMfr2Sf DxsE+vl1c76ekMnar20LWUYxO/TVYNZ1eRf5aIzj3IBpnUMmL7RrwY05e aX92kNw9+qRhi5o40na1QbuKcxKuVtEncI5mSpOJaK7n867SsV67i8v8a F7UjcGSSBXI8BDMgQRuuo1yzVXQOW4t6JKGW8lky9ef/XNxY8wVYf2URj g==; X-CSE-ConnectionGUID: uY8RN4L6TryLbseMla6b3Q== X-CSE-MsgGUID: LF6pIOOJQJ6ULred4UcLZw== X-IPAS-Result: A0BIAgAiH+Nq/5D/Ja1aHgEBCxIMggULgld1YENJA5ZIA54cgX4PAQEBD0QNBAEBhQUCjhwCJjQJDgECBAMCAwEBAQEBAQEBAQEBAQoBAQUBAQECAQcFgQ4Thk8NkBIBAgEDMgEYAS0QHAMBAi8rIwgZGoJoAYJ0AxG0TIIsgQGDKQE/AkNQ2zMBCxQBBYEzhUCII10YAYR9JxsbgXKBFAGDaYEFgVwCggaGHwSCInoSgVoehjKGXgKHU0iBHgNZLAFVEw0KCwcFgWgDNRIqFW4yHYEjPheBBxsGBYEdgR6BGYEHXYErKWABIYEIgXYCglGCAAIBSUEOB0VTCSVDEkckIggSCQETGi4LgRo1PAkmQRUMZAsaBWIIAg0MdjkQMSAmMgQDHRgNSBEsNxUZBD5uB5Fdgw0BPRwiEwErgWgBFBAfEQsyknGQFoIhoQ8KKIN2jCKVOhozhVulFAuYfY4KllCEaYFoPIFZcBWDIglKGQ+OLgsLgVGCDzOCI4I9yUcnMgIJAy8BAQcCBw4DC4FokX4BAQ IronPort-Data: A9a23:B531DaJyJW0IHytPFE+Rh5QlxSXFcZb7ZxGr2PjKsXjdYENS0DRWm GUaC2rQPfaLYmvzeNEiaoXjo05X68CHztdrSQcd+CA2RRqmiyZq6fd1j6vUF3nPRiEWZBs/t 63yUvGZcoZpCCea+Uf1WlTYhSEU/bmSQbbhA/LzNCl0RAt1IA8skhsLd9QR2uaEuvDnRVnS0 T/Oi5eHYgH8g2Qlajt8B5+r8XuDgtyj4Fv0gXRmDRx7lAe2v2UYCpsZOZawIxPQKqFIHvS3T vr017qw+GXU5X8FUrtJRZ6iLyXm6paLVeS/oiI+t5qK23CulQRuukoPD8fwXG8M49m/c3+d/ /0W3XC4YV9B0qQhA43xWTEAe811FfUuFLMqvRFTvOTLp3AqfUcAzN1zPREMG9E8pNptEEVE7 vE9LDlTZEu60rfeLLKTEoGAh+w5J8XteYdasXZ6wHSBUrAtQIvIROPB4towMDUY358VW62BI ZBENHw2MEiojx5nYj/7DLo+gOehhXDlWzZZs1mS46Ew5gA/ySQsi+OwaoqPJILiqcN9umjGv kPh2EbAIE8nEMaSxWa4+Vaembqa9c/8cMdIfFGizdZtmFCVy2kZBREaWFf+qv6jh2a6WslDM AoT4icooK04+UCnQ9W7WAe3yENopTYGUNZWVul/4waXx++MvECSB3MPSXhKb9lOWNIKeAHGH 2Shx7vBbQGDepXOIZ5B3t94dQ+PBBU= IronPort-HdrOrdr: A9a23:0PU4QKwX41mwtDuC9cZ7KrPw9L1zdoMgy1knxilNoNJuHfBw8P re+8jzuiWUtN98YhwdcJW7Scu9qBDnhPpICPcqXYtKNTOO0ADDEGgh1/qG/9SKIUPDH4BmuZ uIWpIObuEYdWIK7vrS0U2fD8sqxsWB/eSDgOfTyGoocCRRApsQljuQzm2gYzZLrM4sP+tAKK ah X-Talos-CUID: 9a23:pKX2K2ovTmkhh6/A6je6EZXmUd0UIkf7kFOOH1WpLWxyRZiRQAGao5oxxg== X-Talos-MUID: 9a23:q5iiIgjNnYzdOwrhw1kjAsMpEOk2+4WJL2I0s8s7n9OJOXBNMBOvk2Hi X-IronPort-Anti-Spam-Filtered: true X-IronPort-AV: E=Sophos;i="6.27,184,1787011200"; d="scan'208";a="533528266" Received: from rcdn-l-core-07.cisco.com ([173.37.255.144]) by rcdn-iport-8.cisco.com with ESMTP/TLS/TLS_AES_256_GCM_SHA384; 29 Oct 2026 10:30:13 +0000 Received: from sjc-ads-5245.cisco.com (sjc-ads-5245.cisco.com [10.28.23.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by rcdn-l-core-07.cisco.com (Postfix) with ESMTPS id CD1D918000228; Thu, 29 Oct 2026 10:30:12 +0000 (GMT) Received: by sjc-ads-5245.cisco.com (Postfix, from userid 1887505) id 73C29CBF201; Thu, 29 Oct 2026 03:30:12 -0700 (PDT) From: "Hetvi Thakar -X (hthakar - E INFOCHIPS PRIVATE LIMITED at Cisco)" To: openembedded-core@lists.openembedded.org Cc: xe-linux-external@cisco.com Subject: [OE-core][wrynose][PATCH v2 2/3] lrzsz: fix CVE-2026-105840 Date: Thu, 29 Oct 2026 03:30:11 -0700 Message-Id: <20261029103012.2335950-2-hthakar@cisco.com> X-Mailer: git-send-email 2.35.6 In-Reply-To: <20261029103012.2335950-1-hthakar@cisco.com> References: <20261029103012.2335950-1-hthakar@cisco.com> MIME-Version: 1.0 X-Auto-Response-Suppress: DR, OOF, AutoReply X-Outbound-Client-TLS: ANONYMOUS;sjc-ads-5245.cisco.com [10.28.23.9];TLSv1.3;TLS_AES_256_GCM_SHA384;256 X-Outbound-SMTP-Client: 10.28.23.9, sjc-ads-5245.cisco.com X-Outbound-Node: rcdn-l-core-07.cisco.com List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by lin-tor-korg-lkml-alma10-1 with HTTPS for ; Thu, 29 Oct 2026 10:30:19 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/248932 From: Hetvi Thakar When built without PUBDIR support, lrz does not reject absolute pathnames in restricted mode. A malicious sender can therefore write outside the receive directory, subject to the receiving user's filesystem permissions. Backport upstream commit [1], which removes PUBDIR support and makes absolute-path rejection unconditional in the restricted-mode checks, addressing the vulnerability described in [2]. [1] https://github.com/UweOhse/lrzsz/commit/b1fc8a01e3a074f8462a29dca45ed7c8fd2ef665 [2] https://security-tracker.debian.org/tracker/CVE-2026-105840 Signed-off-by: Hetvi Thakar --- Changes in v2: - corrected the advisory reference in commit messsage --- .../lrzsz/lrzsz-0.12.20/CVE-2026-105840.patch | 106 ++++++++++++++++++ meta/recipes-bsp/lrzsz/lrzsz_0.12.20.bb | 1 + 2 files changed, 107 insertions(+) create mode 100644 meta/recipes-bsp/lrzsz/lrzsz-0.12.20/CVE-2026-105840.patch diff --git a/meta/recipes-bsp/lrzsz/lrzsz-0.12.20/CVE-2026-105840.patch b/meta/recipes-bsp/lrzsz/lrzsz-0.12.20/CVE-2026-105840.patch new file mode 100644 index 00000000000..1bf5eae803c --- /dev/null +++ b/meta/recipes-bsp/lrzsz/lrzsz-0.12.20/CVE-2026-105840.patch @@ -0,0 +1,106 @@ +From b1fc8a01e3a074f8462a29dca45ed7c8fd2ef665 Mon Sep 17 00:00:00 2001 +From: Uwe Ohse at akiar +Date: Mon, 10 Aug 2026 18:09:20 +0200 +Subject: [PATCH] remove PUBDIR, fix the 2nd security hole found by + tristaninsec + +CVE: CVE-2026-105840 +Upstream-Status: Backport [https://github.com/UweOhse/lrzsz/commit/b1fc8a01e3a074f8462a29dca45ed7c8fd2ef665] + +Backport Changes: +- Applied the configure.ac change to configure.in, which is the build + configuration filename used by lrzsz 0.12.20. +- Omitted NEWS because its 0.13.0 release-note hunk conflicts with the + 0.12.20 release history and is not needed for the security fix. + +(cherry picked from commit b1fc8a01e3a074f8462a29dca45ed7c8fd2ef665) +Signed-off-by: Hetvi Thakar +--- + configure.in | 7 ------- + src/lrz.c | 16 +++++----------- + src/lsz.c | 9 ++------- + 3 files changed, 7 insertions(+), 25 deletions(-) + +diff --git a/configure.in b/configure.in +index b7c3c31..504bd32 100644 +--- a/configure.in ++++ b/configure.in +@@ -37,13 +37,6 @@ AC_ARG_ENABLE(timesync, + fi], + [AC_DEFINE(ENABLE_TIMESYNC)]) + AC_SUBST(ENABLE_TIMESYNC) +-AC_ARG_ENABLE(pubdir, +- [--enable-pubdir=/path include support for a public writeable directory], +- [if test "$enableval" = "no" ; then +- : +- else +- AC_DEFINE_UNQUOTED(PUBDIR,"$enableval") +- fi]) + AC_ARG_ENABLE(mkdir, + [--disable-mkdir disable support for creating directories (lrz)], + [if test "$enableval" = "no" ; then +diff --git a/src/lrz.c b/src/lrz.c +index 9c08a3d..168636e 100644 +--- a/src/lrz.c ++++ b/src/lrz.c +@@ -1553,12 +1553,10 @@ chkinvok(const char *s) + } + +-/* +- * Totalitarian Communist pathname processing +- */ + static void + checkpath(const char *name) + { + if (Restricted) { ++ FILE *noleak = NULL; + const char *p; + p=strrchr(name,'/'); + if (p) +@@ -1595,20 +1593,16 @@ checkpath(const char *name) + p=name; + /* don't overwrite any file in very restricted mode. + * don't overwrite hidden files in restricted mode */ +- if ((Restricted==2 || *name=='.') && fopen(name, "r") != NULL) { ++ if ((Restricted==2 || *name=='.') && (noleak = fopen(name, "r")) != NULL) { ++ fclose(noleak); + canit(STDOUT_FILENO); + vstring("\r\n"); + vstringf(_("%s: %s exists\n"), + program_name, name); + bibi(-1); + } +- /* restrict pathnames to current tree or uucppublic */ +- if ( strstr(name, "../") +-#ifdef PUBDIR +- || (name[0]== '/' && strncmp(name, PUBDIR, +- strlen(PUBDIR))) +-#endif +- ) { ++ /* restrict pathnames to the current tree */ ++ if ( strstr(name, "../") || name[0] == '/') { + canit(STDOUT_FILENO); + vstring("\r\n"); + vstringf(_("%s:\tSecurity Violation"),program_name); +diff --git a/src/lsz.c b/src/lsz.c +index 69f4fb8..3dd91b1 100644 +--- a/src/lsz.c ++++ b/src/lsz.c +@@ -1009,13 +1009,8 @@ wcs(const char *oname, const char *remotename) + + + if (Restricted) { +- /* restrict pathnames to current tree or uucppublic */ +- if ( strstr(oname, "../") +-#ifdef PUBDIR +- || (oname[0]== '/' && strncmp(oname, MK_STRING(PUBDIR), +- strlen(MK_STRING(PUBDIR)))) +-#endif +- ) { ++ /* restrict pathnames to current tree */ ++ if ( strstr(oname, "../") || oname[0] == '/') { + canit(STDOUT_FILENO); + vchar('\r'); + error(1,0, +-- +2.35.6 diff --git a/meta/recipes-bsp/lrzsz/lrzsz_0.12.20.bb b/meta/recipes-bsp/lrzsz/lrzsz_0.12.20.bb index 403266743e0..ec98f690153 100644 --- a/meta/recipes-bsp/lrzsz/lrzsz_0.12.20.bb +++ b/meta/recipes-bsp/lrzsz/lrzsz_0.12.20.bb @@ -22,6 +22,7 @@ SRC_URI = "https://www.ohse.de/uwe/releases/lrzsz-${PV}.tar.gz \ file://0001-Fix-build-with-GCC-15.patch \ file://0001-lrzsz-convert-K-R-function-definitions-to-ANSI-C-pro.patch \ file://CVE-2026-105841.patch \ + file://CVE-2026-105840.patch \ " SRC_URI[sha256sum] = "c28b36b14bddb014d9e9c97c52459852f97bd405f89113f30bee45ed92728ff1"