{
  "cveId": "CVE-2024-50042",
  "url": "https://patchblox.com/security/cve/CVE-2024-50042",
  "summary": "CVE-2024-50042 is fixed in 26 products on 1 platform, first by DEBIAN-CVE-2024-50042, released October 21, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ice: Fix increasing MSI-X on VF  Increasing MSI-...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ice: Fix increasing MSI-X on VF  Increasing MSI-X value on a VF leads to invalid memory operations. This is caused by not reallocating some arrays.  Reproducer:   modprobe ice   echo 0 \u003E /sys/bus/pci/devices/$PF_PCI/sriov_drivers_autoprobe   echo 1 \u003E /sys/bus/pci/devices/$PF_PCI/sriov_numvfs   echo 17 \u003E /sys/bus/pci/devices/$VF0_PCI/sriov_vf_msix_count  Default MSI-X is 16, so 17 and above triggers this issue.  KASAN reports:    BUG: KASAN: slab-out-of-bounds in ice_vsi_alloc_ring_stats\u002B0x38d/0x4b0 [ice]   Read of size 8 at addr ffff8888b937d180 by task bash/28433   (...)    Call Trace:    (...)    ? ice_vsi_alloc_ring_stats\u002B0x38d/0x4b0 [ice]    kasan_report\u002B0xed/0x120    ? ice_vsi_alloc_ring_stats\u002B0x38d/0x4b0 [ice]    ice_vsi_alloc_ring_stats\u002B0x38d/0x4b0 [ice]    ice_vsi_cfg_def\u002B0x3360/0x4770 [ice]    ? mutex_unlock\u002B0x83/0xd0    ? __pfx_ice_vsi_cfg_def\u002B0x10/0x10 [ice]    ? __pfx_ice_remove_vsi_lkup_fltr\u002B0x10/0x10 [ice]    ice_vsi_cfg\u002B0x7f/0x3b0 [ice]    ice_vf_reconfig_vsi\u002B0x114/0x210 [ice]    ice_sriov_set_msix_vec_count\u002B0x3d0/0x960 [ice]    sriov_vf_msix_count_store\u002B0x21c/0x300    (...)    Allocated by task 28201:    (...)    ice_vsi_cfg_def\u002B0x1c8e/0x4770 [ice]    ice_vsi_cfg\u002B0x7f/0x3b0 [ice]    ice_vsi_setup\u002B0x179/0xa30 [ice]    ice_sriov_configure\u002B0xcaa/0x1520 [ice]    sriov_numvfs_store\u002B0x212/0x390    (...)  To fix it, use ice_vsi_rebuild() instead of ice_vf_reconfig_vsi(). This causes the required arrays to be reallocated taking the new queue count into account (ice_vsi_realloc_stat_arrays()). Set req_txq and req_rxq before ice_vsi_rebuild(), so that realloc uses the newly set queue count.  Additionally, ice_vsi_rebuild() does not remove VSI filters (ice_fltr_remove_all()), so ice_vf_init_host_cfg() is no longer necessary.",
  "published": "2024-10-21T20:15:17Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.0021,
  "epssPercentile": 0.11296,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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      "product": "dtb-aarch64",
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      "fix": "SUSE-SU-2024:4318-1",
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      "released": "2024-12-13T15:33:38Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
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      "fix": "SUSE-SU-2024:4318-1",
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      "released": "2024-12-13T15:33:38Z"
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    {
      "platform": "linux",
      "product": "kernel-64kb",
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      "fixedVersion": "6.4.0-150600.23.30.1",
      "fix": "SUSE-SU-2024:4318-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2024-4318-1",
      "released": "2024-12-13T15:33:38Z"
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    {
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      "product": "kernel-azure",
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      "fixedVersion": "6.4.0-150600.8.17.2",
      "fix": "SUSE-SU-2024:3984-1",
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      "released": "2024-11-13T10:13:12Z"
    },
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  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}