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

[Azure Linux Security Servicing Account (azurelinux-security)]

Auto Patch rsyslog for CVE-2026-19654.

Autosec pipeline run -> https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1183641&view=results

CVE-2026-19654 : Single Patch Backporter Pipeline Run -> https://dev.azure.com/mariner-org/mariner/_build/results?buildId=1183645&view=results

Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./LICENSES-AND-NOTICES/SPECS/data/licenses.json, ./LICENSES-AND-NOTICES/SPECS/LICENSES-MAP.md, ./LICENSES-AND-NOTICES/SPECS/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

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Summary

What does the PR accomplish, why was it needed?

• Auto Patch rsyslog for CVE-2026-19654 (MEDIUM).

Change Log

• CVE-2026-19654

Does this affect the toolchain?

YES/NO

Associated issues

• N/A

Links to CVEs

• https://nvd.nist.gov/vuln/detail/CVE-2026-19654

Test Methodology

• Pipeline build id: Buddy Build URL

[azure-pipelines]

Azure Pipelines:
There may be pipelines that require an authorized user to comment /azp run to run.

[VijayenderReddyPutta]

CVE-2026-19654:
AI patch matches upstream patch.
Backport: Yes (AI-generated backport of upstream fix)

Summary:
1.This PR applies a security patch to rsyslog 8.2308.0 to address CVE-2026-19654 (MEDIUM).
2.Backports the upstream imptcp fix so regex framing matches are only honored when iCurrLine > 0, i.e. after a valid non-zero line offset.
3.Prevents incorrect framing behavior when a regex match occurs at the very start of a received message (iCurrLine == 0).
4.Adds CVE-2026-19654.patch to the rsyslog package and bumps the release from 8.2308.0-5 to 8.2308.0-6.
5.Verified: local rebuild completed successfully (CHECK DONE rsyslog. EXIT STATUS 0), all subpackages (rsyslog, rsyslog-doc, rsyslog-mmsnmptrapd, rsyslog-snmp, rsyslog-debuginfo) built and moved to output without errors.

Patch application:

Due to a circular dependency involving a toolchain package, the PR [Pipelines - Run PR-18467+rsyslog+unknown] could not be completed successfully. Therefore, I am attesting the local build results for validation.

[Akhila Guruju (akhila-guruju)]

The patch application needs to be reordered, as they are currently out of sequence. %autosetup -p1 can be used.

# Unpack the code source tarball
%autosetup -p1

[VijayenderReddyPutta]

Patch application: