{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-38042",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-38042"
  ],
  "published": "2025-06-18T09:34:24Z",
  "summary": "dmaengine: ti: k3-udma-glue: Drop skip_fdq argument from k3_udma_glue_reset_rx_chn",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: ti: k3-udma-glue: Drop skip_fdq argument from k3_udma_glue_reset_rx_chn\n\nThe user of k3_udma_glue_reset_rx_chn() e.g. ti_am65_cpsw_nuss can\nrun on multiple platforms having different DMA architectures.\nOn some platforms there can be one FDQ for all flows in the RX channel\nwhile for others there is a separate FDQ for each flow in the RX channel.\n\nSo far we have been relying on the skip_fdq argument of\nk3_udma_glue_reset_rx_chn().\n\nInstead of relying on the user to provide this information, infer it\nbased on DMA architecture during k3_udma_glue_request_rx_chn() and save it\nin an internal flag 'single_fdq'. Use that flag at\nk3_udma_glue_reset_rx_chn() to deicide if the FDQ needs\nto be cleared for every flow or just for flow 0.\n\nFixes the below issue on ti_am65_cpsw_nuss driver on AM62-SK.\n\n> ip link set eth1 down\n> ip link set eth0 down\n> ethtool -L eth0 rx 8\n> ip link set eth0 up\n> modprobe -r ti_am65_cpsw_nuss\n\n[  103.045726] ------------[ cut here ]------------\n[  103.050505] k3_knav_desc_pool size 512000 != avail 64000\n[  103.050703] WARNING: CPU: 1 PID: 450 at drivers/net/ethernet/ti/k3-cppi-desc-pool.c:33 k3_cppi_desc_pool_destroy+0xa0/0xa8 [k3_cppi_desc_pool]\n[  103.068810] Modules linked in: ti_am65_cpsw_nuss(-) k3_cppi_desc_pool snd_soc_hdmi_codec crct10dif_ce snd_soc_simple_card snd_soc_simple_card_utils display_connector rtc_ti_k3 k3_j72xx_bandgap tidss drm_client_lib snd_soc_davinci_mcas\np drm_dma_helper tps6598x phylink snd_soc_ti_udma rti_wdt drm_display_helper snd_soc_tlv320aic3x_i2c typec at24 phy_gmii_sel snd_soc_ti_edma snd_soc_tlv320aic3x sii902x snd_soc_ti_sdma sa2ul omap_mailbox drm_kms_helper authenc cfg80211 r\nfkill fuse drm drm_panel_orientation_quirks backlight ip_tables x_tables ipv6 [last unloaded: k3_cppi_desc_pool]\n[  103.119950] CPU: 1 UID: 0 PID: 450 Comm: modprobe Not tainted 6.13.0-rc7-00001-g9c5e3435fa66 #1011\n[  103.119968] Hardware name: Texas Instruments AM625 SK (DT)\n[  103.119974] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[  103.119983] pc : k3_cppi_desc_pool_destroy+0xa0/0xa8 [k3_cppi_desc_pool]\n[  103.148007] lr : k3_cppi_desc_pool_destroy+0xa0/0xa8 [k3_cppi_desc_pool]\n[  103.154709] sp : ffff8000826ebbc0\n[  103.158015] x29: ffff8000826ebbc0 x28: ffff0000090b6300 x27: 0000000000000000\n[  103.165145] x26: 0000000000000000 x25: 0000000000000000 x24: ffff0000019df6b0\n[  103.172271] x23: ffff0000019df6b8 x22: ffff0000019df410 x21: ffff8000826ebc88\n[  103.179397] x20: 000000000007d000 x19: ffff00000a3b3000 x18: 0000000000000000\n[  103.186522] x17: 0000000000000000 x16: 0000000000000000 x15: 000001e8c35e1cde\n[  103.193647] x14: 0000000000000396 x13: 000000000000035c x12: 0000000000000000\n[  103.200772] x11: 000000000000003a x10: 00000000000009c0 x9 : ffff8000826eba20\n[  103.207897] x8 : ffff0000090b6d20 x7 : ffff00007728c180 x6 : ffff00007728c100\n[  103.215022] x5 : 0000000000000001 x4 : ffff000000508a50 x3 : ffff7ffff6146000\n[  103.222147] x2 : 0000000000000000 x1 : e300b4173ee6b200 x0 : 0000000000000000\n[  103.229274] Call trace:\n[  103.231714]  k3_cppi_desc_pool_destroy+0xa0/0xa8 [k3_cppi_desc_pool] (P)\n[  103.238408]  am65_cpsw_nuss_free_rx_chns+0x28/0x4c [ti_am65_cpsw_nuss]\n[  103.244942]  devm_action_release+0x14/0x20\n[  103.249040]  release_nodes+0x3c/0x68\n[  103.252610]  devres_release_all+0x8c/0xdc\n[  103.256614]  device_unbind_cleanup+0x18/0x60\n[  103.260876]  device_release_driver_internal+0xf8/0x178\n[  103.266004]  driver_detach+0x50/0x9c\n[  103.269571]  bus_remove_driver+0x6c/0xbc\n[  103.273485]  driver_unregister+0x30/0x60\n[  103.277401]  platform_driver_unregister+0x14/0x20\n[  103.282096]  am65_cpsw_nuss_driver_exit+0x18/0xff4 [ti_am65_cpsw_nuss]\n[  103.288620]  __arm64_sys_delete_module+0x17c/0x25c\n[  103.293404]  invoke_syscall+0x44/0x100\n[  103.297149]  el0_svc_common.constprop.0+0xc0/0xe0\n[  103.301845]  do_el0_svc+0x1c/0x28\n[  103.305155]  el0_svc+0x28/0x98\n---truncated---",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-38042"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d0dd9d133ef8fdc894e0be9aa27dc49ef5f813cb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0da30874729baeb01889b0eca16cfda122687503"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}