CVE-2024-56719 (GCVE-0-2024-56719)
Vulnerability from cvelistv5
Published
2024-12-29 08:48
Modified
2025-10-01 20:07
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix TSO DMA API usage causing oops Commit 66600fac7a98 ("net: stmmac: TSO: Fix unbalanced DMA map/unmap for non-paged SKB data") moved the assignment of tx_skbuff_dma[]'s members to be later in stmmac_tso_xmit(). The buf (dma cookie) and len stored in this structure are passed to dma_unmap_single() by stmmac_tx_clean(). The DMA API requires that the dma cookie passed to dma_unmap_single() is the same as the value returned from dma_map_single(). However, by moving the assignment later, this is not the case when priv->dma_cap.addr64 > 32 as "des" is offset by proto_hdr_len. This causes problems such as: dwc-eth-dwmac 2490000.ethernet eth0: Tx DMA map failed and with DMA_API_DEBUG enabled: DMA-API: dwc-eth-dwmac 2490000.ethernet: device driver tries to +free DMA memory it has not allocated [device address=0x000000ffffcf65c0] [size=66 bytes] Fix this by maintaining "des" as the original DMA cookie, and use tso_des to pass the offset DMA cookie to stmmac_tso_allocator(). Full details of the crashes can be found at: https://lore.kernel.org/all/d8112193-0386-4e14-b516-37c2d838171a@nvidia.com/ https://lore.kernel.org/all/klkzp5yn5kq5efgtrow6wbvnc46bcqfxs65nz3qy77ujr5turc@bwwhelz2l4dw/
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4c49f38e20a57f8abaebdf95b369295b153d1f8ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9d5dd7ccea1b46a9a7c6b3c2b9e5ed8864e185e2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/db3667c9bbfbbf5de98e6c9542f7e03fb5243286Patch
Impacted products
Vendor Product Version
Linux Linux Version: 07c9c26e37542486e34d767505e842f48f29c3f6
Version: 66600fac7a984dea4ae095411f644770b2561ede
Version: 66600fac7a984dea4ae095411f644770b2561ede
Version: ece593fc9c00741b682869d3f3dc584d37b7c9df
Version: a3ff23f7c3f0e13f718900803e090fd3997d6bc9
Version: 58d23d835eb498336716cca55b5714191a309286
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   Linux Linux Version: 6.12
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El buf (dma cookie) y len almacenados en esta estructura se pasan a dma_unmap_single() por stmmac_tx_clean(). La DMA API requiere que la dma cookie pasada a dma_unmap_single() sea la misma que el valor devuelto desde dma_map_single(). Sin embargo, al mover la asignaci\u00f3n m\u00e1s tarde, este no es el caso cuando priv-\u0026gt;dma_cap.addr64 \u0026gt; 32 como \\\"des\\\" es desplazado por proto_hdr_len. Esto causa problemas como: dwc-eth-dwmac 2490000.ethernet eth0: el mapa DMA de transmisi\u00f3n fall\u00f3 y con DMA_API_DEBUG habilitado: DMA-API: dwc-eth-dwmac 2490000.ethernet: el controlador del dispositivo intenta +liberar memoria DMA que no ha asignado [direcci\u00f3n del dispositivo=0x000000ffffcf65c0] [tama\u00f1o=66 bytes] Solucione esto manteniendo \\\"des\\\" como la cookie DMA original y use tso_des para pasar la cookie DMA de desplazamiento a stmmac_tso_allocator(). 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The DMA API requires that\\nthe dma cookie passed to dma_unmap_single() is the same as the value\\nreturned from dma_map_single(). However, by moving the assignment\\nlater, this is not the case when priv-\u003edma_cap.addr64 \u003e 32 as \\\"des\\\"\\nis offset by proto_hdr_len.\\n\\nThis causes problems such as:\\n\\n  dwc-eth-dwmac 2490000.ethernet eth0: Tx DMA map failed\\n\\nand with DMA_API_DEBUG enabled:\\n\\n  DMA-API: dwc-eth-dwmac 2490000.ethernet: device driver tries to +free DMA memory it has not allocated [device address=0x000000ffffcf65c0] [size=66 bytes]\\n\\nFix this by maintaining \\\"des\\\" as the original DMA cookie, and use\\ntso_des to pass the offset DMA cookie to stmmac_tso_allocator().\\n\\nFull details of the crashes can be found at:\\nhttps://lore.kernel.org/all/d8112193-0386-4e14-b516-37c2d838171a@nvidia.com/\\nhttps://lore.kernel.org/all/klkzp5yn5kq5efgtrow6wbvnc46bcqfxs65nz3qy77ujr5turc@bwwhelz2l4dw/\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.68\", \"versionStartIncluding\": \"6.6.60\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.7\", \"versionStartIncluding\": \"6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13\", \"versionStartIncluding\": \"6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.15.171\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.1.116\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.11.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T13:01:18.123Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-56719\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T20:07:06.268Z\", \"dateReserved\": \"2024-12-27T15:00:39.858Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-29T08:48:51.495Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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