In the Linux kernel, the following vulnerability has been resolved:
net: mvpp2: Prevent parser TCAM memory corruption
Protect the parser TCAM/SRAM memory, and the cached (shadow) SRAM
information, from concurrent modifications.
Both the TCAM and SRAM tables are indirectly accessed by configuring
an index register that selects the row to read or write to. This means
that operations must be atomic in order to, e.g., avoid spreading
writes across multiple rows. Since the shadow SRAM array is used to
find free rows in the hardware table, it must also be protected in
order to avoid TOCTOU errors where multiple cores allocate the same
row.
This issue was detected in a situation where `mvpp2_set_rx_mode()` ran
concurrently on two CPUs. In this particular case the
MVPP2_PE_MAC_UC_PROMISCUOUS entry was corrupted, causing the
classifier unit to drop all incoming unicast - indicated by the
`rx_classifier_drops` counter.
Metrics
Affected Vendors & Products
References
History
Mon, 03 Nov 2025 20:30:00 +0000
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Fri, 31 Oct 2025 20:45:00 +0000
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Linux
Linux linux Kernel |
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| Weaknesses | CWE-367 | |
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
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| Metrics |
cvssV3_1
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cvssV3_1
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Fri, 18 Apr 2025 02:45:00 +0000
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threat_severity
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cvssV3_1
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Wed, 16 Apr 2025 14:30:00 +0000
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| Description | In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: Prevent parser TCAM memory corruption Protect the parser TCAM/SRAM memory, and the cached (shadow) SRAM information, from concurrent modifications. Both the TCAM and SRAM tables are indirectly accessed by configuring an index register that selects the row to read or write to. This means that operations must be atomic in order to, e.g., avoid spreading writes across multiple rows. Since the shadow SRAM array is used to find free rows in the hardware table, it must also be protected in order to avoid TOCTOU errors where multiple cores allocate the same row. This issue was detected in a situation where `mvpp2_set_rx_mode()` ran concurrently on two CPUs. In this particular case the MVPP2_PE_MAC_UC_PROMISCUOUS entry was corrupted, causing the classifier unit to drop all incoming unicast - indicated by the `rx_classifier_drops` counter. | |
| Title | net: mvpp2: Prevent parser TCAM memory corruption | |
| References |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-04-16T14:12:16.121Z
Updated: 2025-11-03T19:41:43.971Z
Reserved: 2024-12-29T08:45:45.812Z
Link: CVE-2025-22060
No data.
Status : Modified
Published: 2025-04-16T15:15:59.477
Modified: 2025-11-03T20:17:40.983
Link: CVE-2025-22060