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[AutoPR- Security] Patch telegraf for CVE-2026-26958 [LOW] #16091

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[AutoPR- Security] Patch telegraf for CVE-2026-26958 [LOW] #16091

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a257c47
Patch telegraf for CVE-2026-26958
azurelinux-security Mar 3, 2026
15e8814
Update CVE-2026-26958.patch
Kanishk-Bansal Mar 3, 2026
f9fa5e5
Merge branch '3.0-dev' into azure-autosec/telegraf/3.0/1061162
akhila-guruju Mar 20, 2026
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41 changes: 41 additions & 0 deletions SPECS/telegraf/CVE-2026-26958.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,41 @@
From 2a91b328968b2f9d0e39aac8852af38cfdce5b0f Mon Sep 17 00:00:00 2001
From: Filippo Valsorda <hi@filippo.io>
Date: Sun, 15 Feb 2026 22:00:22 +0100
Subject: [PATCH] extra: initialize receiver in MultiScalarMult

(*Point).MultiScalarMult failed to initialize its receiver.

If the method is called on an initialized point that is not the identity
point, MultiScalarMult produces an incorrect result.

If the method is called on an uninitialized point, the behavior is
undefined. In particular, if the receiver is the zero value,
MultiScalarMult returns an invalid point that compares Equal to every
point.

This was independently reported by @WeebDataHoarder and @shaharcohen1.

Fixes CVE-2026-26958
Fixes GHSA-fw7p-63qq-7hpr

Signed-off-by: Azure Linux Security Servicing Account <azurelinux-security@microsoft.com>
Upstream-reference: https://github.com/FiloSottile/edwards25519/commit/d1c650afb95fad0742b98d95f2eb2cf031393abb
---
vendor/filippo.io/edwards25519/extra.go | 1 +
1 file changed, 1 insertion(+)

diff --git a/vendor/filippo.io/edwards25519/extra.go b/vendor/filippo.io/edwards25519/extra.go
index d152d68f..ab2e44a5 100644
--- a/vendor/filippo.io/edwards25519/extra.go
+++ b/vendor/filippo.io/edwards25519/extra.go
@@ -265,6 +265,7 @@ func (v *Point) MultiScalarMult(scalars []*Scalar, points []*Point) *Point {
tmp1 := &projP1xP1{}
tmp2 := &projP2{}
// Lookup-and-add the appropriate multiple of each input point
+ v.Set(NewIdentityPoint())
for j := range tables {
tables[j].SelectInto(multiple, digits[j][63])
tmp1.Add(v, multiple) // tmp1 = v + x_(j,63)*Q in P1xP1 coords
--
2.45.4

7 changes: 6 additions & 1 deletion SPECS/telegraf/telegraf.spec
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@@ -1,7 +1,7 @@
Summary: agent for collecting, processing, aggregating, and writing metrics.
Name: telegraf
Version: 1.31.0
Release: 16%{?dist}
Release: 17%{?dist}
License: MIT
Vendor: Microsoft Corporation
Distribution: Azure Linux
Expand Down Expand Up @@ -31,9 +31,11 @@ Patch16: CVE-2025-47911.patch
Patch17: CVE-2025-58190.patch
Patch18: CVE-2026-2303.patch
Patch19: CVE-2026-26014.patch

# Patch added based on customer request https://microsoft.visualstudio.com/OS/_workitems/edit/61041768
# Fix was introduced 1.37.2, this patch can be removed once we update to 1.37.2 or later
Patch20: cisco_telegraf_bug61041768.patch
Patch21: CVE-2026-26958.patch

BuildRequires: golang
BuildRequires: systemd-devel
Expand Down Expand Up @@ -98,6 +100,9 @@ fi
%dir %{_sysconfdir}/%{name}/telegraf.d

%changelog
* Tue Mar 03 2026 Azure Linux Security Servicing Account <azurelinux-security@microsoft.com> - 1.31.0-17
- Patch for CVE-2026-26958

* Fri Feb 27 2026 Sindhu Karri <lakarri@microsoft.com> - 1.31.0-16
- Added patch to fix the issue reported in https://microsoft.visualstudio.com/OS/_workitems/edit/61041768
Fix in telegraf to support cisco telemetry plugin that collects telemetry data from cisco NXOS switches.
Expand Down
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