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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
3f518509dedc99f0b755d2ce68d24f610e3a005a to < e3711163d14d02af9005e4cdad30899c565f13fbaffected3f518509dedc99f0b755d2ce68d24f610e3a005a to < b3f48a41a00d6d8d9c6fe09ae47dd21c8c1c8b03affected3f518509dedc99f0b755d2ce68d24f610e3a005a to < 5b0ae1723a7d9574ae1aee7d9cf9757a30069865affected3f518509dedc99f0b755d2ce68d24f610e3a005a to < fcbfb54a0269875cf3cd6a2bff4f85a2e0a0b552affected3f518509dedc99f0b755d2ce68d24f610e3a005a to < e64e9b6e86b39db3baa576fd73da73533b54cb2daffected3f518509dedc99f0b755d2ce68d24f610e3a005a to < 46c1e23e34c9d1eaadf37f88216d9d8ce0d0bceeaffected3f518509dedc99f0b755d2ce68d24f610e3a005a to < 96844075226b49af25a69a1d084b648ec2d9b08daffected
Linux Linux
Default version status: affected
3.17affected0 to < 3.17unaffected5.15.180 to ≤ 5.15.*unaffected6.1.134 to ≤ 6.1.*unaffected6.6.87 to ≤ 6.6.*unaffected6.12.23 to ≤ 6.12.*unaffected6.13.11 to ≤ 6.13.*unaffected6.14.2 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/e3711163d14d02af9005e4cdad30899c565f13fb ↗
- https://git.kernel.org/stable/c/b3f48a41a00d6d8d9c6fe09ae47dd21c8c1c8b03 ↗
- https://git.kernel.org/stable/c/5b0ae1723a7d9574ae1aee7d9cf9757a30069865 ↗
- https://git.kernel.org/stable/c/fcbfb54a0269875cf3cd6a2bff4f85a2e0a0b552 ↗
- https://git.kernel.org/stable/c/e64e9b6e86b39db3baa576fd73da73533b54cb2d ↗
- https://git.kernel.org/stable/c/46c1e23e34c9d1eaadf37f88216d9d8ce0d0bcee ↗
- https://git.kernel.org/stable/c/96844075226b49af25a69a1d084b648ec2d9b08d ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html ↗