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[AutoPR- Security] Patch rsyslog for CVE-2026-19654 [MEDIUM] #18467

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[AutoPR- Security] Patch rsyslog for CVE-2026-19654 [MEDIUM] #18467

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27 changes: 27 additions & 0 deletions SPECS/rsyslog/CVE-2026-19654.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
From cb2473e6b68709d67c787a400509c329cf93a1df Mon Sep 17 00:00:00 2001
From: AllSpark <allspark@microsoft.com>
Date: Sun, 16 Aug 2026 06:35:29 +0000
Subject: [PATCH] imptcp: guard regex framing match at line start

Signed-off-by: Azure Linux Security Servicing Account <azurelinux-security@microsoft.com>
Upstream-reference: AI Backport of https://github.com/rsyslog/rsyslog/commit/07b3c40a5a78c79ed9109251f842ca7e955dd586.patch
---
plugins/imptcp/imptcp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/imptcp/imptcp.c b/plugins/imptcp/imptcp.c
index 351dee0..1225e6d 100644
--- a/plugins/imptcp/imptcp.c
+++ b/plugins/imptcp/imptcp.c
@@ -1053,7 +1053,7 @@ processDataRcvd_regexFraming(ptcpsess_t *const __restrict__ pThis,
pThis->iCurrLine = pThis->iMsg;
} else {
const int isMatch = !regexec(&inst->start_preg, (char*)pThis->pMsg+pThis->iCurrLine, 0, NULL, 0);
- if(isMatch) {
+ if(pThis->iCurrLine > 0 && isMatch) {
DBGPRINTF("regex match (%d), framing line: %s\n", pThis->iCurrLine, pThis->pMsg);
strcpy((char*)pThis->pMsg_save, (char*) pThis->pMsg+pThis->iCurrLine);
pThis->iMsg = pThis->iCurrLine - 1;
--
2.45.4

7 changes: 6 additions & 1 deletion SPECS/rsyslog/rsyslog.spec
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
Summary: Rocket-fast system for log processing
Name: rsyslog
Version: 8.2308.0
Release: 5%{?dist}
Release: 6%{?dist}
License: GPLv3+ AND ASL 2.0
Vendor: Microsoft Corporation
Distribution: Azure Linux
Expand All @@ -17,6 +17,7 @@ Source3: rsyslog.conf
Source4: https://www.rsyslog.com/files/download/rsyslog/%{name}-doc-%{base_version}.0.tar.gz
Source5: rsyslog.logrotate
Patch0: issue5158.patch
Patch1: CVE-2026-19654.patch
BuildRequires: autogen
BuildRequires: curl-devel
BuildRequires: gnutls-devel
Expand Down Expand Up @@ -81,6 +82,7 @@ BuildRequires: net-snmp-devel
%prep
# Unpack the code source tarball
%setup -q
%patch 1 -p1
%patch 0 -p1
# Unpack the documentation tarball in the folder created above
%setup -q -a 4 -T -D
Expand Down Expand Up @@ -204,6 +206,9 @@ fi
%{_libdir}/rsyslog/omsnmp.so

%changelog
* Sun Aug 16 2026 Azure Linux Security Servicing Account <azurelinux-security@microsoft.com> - 8.2308.0-6
- Patch for CVE-2026-19654

* Tue Jan 06 2026 Pawel Winogrodzki <pawelwi@microsoft.com> - 8.2308.0-5
- Bumping release to rebuild with new 'net-snmp' libs.

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