Network service interruption via parser-table race
Published Apr 16, 2025 · Updated Sep 8, 2026
A race condition in the Linux mvpp2 driver allows local users to interrupt network service through concurrent receive-mode changes. The parser's TCAM and SRAM routines share an indirect row-index register and shadow allocation array without atomic locking, so simultaneous mvpp2_set_rx_mode() calls can split writes across rows or allocate the same row. Exploitation requires the mvpp2 driver and concurrent execution on multiple CPUs; corruption of the promiscuous unicast entry causes the classifier to drop all incoming unicast traffic.
Summary
What happened
A race condition in the Linux mvpp2 driver allows local users to interrupt network service through concurrent receive-mode changes. The parser's TCAM and SRAM routines share an indirect row-index register and shadow allocation array without atomic locking, so simultaneous mvpp2_set_rx_mode() calls can split writes across rows or allocate the same row. Exploitation requires the mvpp2 driver and concurrent execution on multiple CPUs; corruption of the promiscuous unicast entry causes the classifier to drop all incoming unicast traffic.
The record
- CVE
- CVE-2025-22060
- Published
- Apr 16, 2025
- Updated
- Sep 8, 2026
- Vendor
- Siemens
- Product
- SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
- Classifications
- CWE-20, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 16, 2025CVE publishedPublication date reported by the CVE source.
- Sep 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=V3.1.6 <*
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Public exploit references
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Technologies
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Your stack
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