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[AutoPR- Security] Patch rsyslog for CVE-2026-78002 [MEDIUM] #18733

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[AutoPR- Security] Patch rsyslog for CVE-2026-78002 [MEDIUM] #18733

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48 changes: 48 additions & 0 deletions SPECS/rsyslog/CVE-2026-78002.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,48 @@
From cc698584858a71fa6702aa65b18c92079e0e21f5 Mon Sep 17 00:00:00 2001
From: Rainer Gerhards <rgerhards@adiscon.com>
Date: Thu, 20 Aug 2026 15:53:16 +0200
Subject: [PATCH] rainerscript: align replace sizing rewind

Why:
The sizing pass skipped a candidate match that the copy pass replaced.

Impact:
Overlapping partial matches now receive a correctly sized output string.

Before/After:
Before, the two passes resumed at different source offsets; after, both
resume at the same offset.

Technical Overview:
Make the sizing pass rewind both its source index and tentative output
length by the full failed partial-match length. This mirrors the copy pass
and ensures that every replacement counted is also written exactly once.
The change preserves the existing empty-find, replacement, and trailing
partial-match behavior.

With the help of AI-Agents: Codex

Signed-off-by: Azure Linux Security Servicing Account <azurelinux-security@microsoft.com>
Upstream-reference: https://github.com/rsyslog/rsyslog/commit/667e3f61aec5ee02c5c2ee6f0f8accf6fe4301a9.patch
---
grammar/rainerscript.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/grammar/rainerscript.c b/grammar/rainerscript.c
index 69d0b38..8c1c4a1 100644
--- a/grammar/rainerscript.c
+++ b/grammar/rainerscript.c
@@ -1760,8 +1760,8 @@ doFuncReplace(struct svar *__restrict__ const operandVal, struct svar *__restric
if (src_buff[i] == find[j]) {
j++;
} else if (j > 0) {
- i -= (j - 1);
- lDst -= (j - 1);
+ i -= j;
+ lDst -= j;
j = 0;
}
}
--
2.45.4

6 changes: 5 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: 6%{?dist}
Release: 7%{?dist}
License: GPLv3+ AND ASL 2.0
Vendor: Microsoft Corporation
Distribution: Azure Linux
Expand All @@ -18,6 +18,7 @@ Source4: https://www.rsyslog.com/files/download/rsyslog/%{name}-doc-%{bas
Source5: rsyslog.logrotate
Patch0: issue5158.patch
Patch1: CVE-2026-19654.patch
Patch2: CVE-2026-78002.patch
BuildRequires: autogen
BuildRequires: curl-devel
BuildRequires: gnutls-devel
Expand Down Expand Up @@ -204,6 +205,9 @@ fi
%{_libdir}/rsyslog/omsnmp.so

%changelog
* Mon Sep 07 2026 Azure Linux Security Servicing Account <azurelinux-security@microsoft.com> - 8.2308.0-7
- Patch for CVE-2026-78002

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

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