{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-26875",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-26875"
  ],
  "published": "2024-04-17T10:29:01Z",
  "summary": "media: pvrusb2: fix uaf in pvr2_context_set_notify",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pvrusb2: fix uaf in pvr2_context_set_notify\n\n[Syzbot reported]\nBUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35\nRead of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26\n\nCPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\nWorkqueue: usb_hub_wq hub_event\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0xc4/0x620 mm/kasan/report.c:488\n kasan_report+0xda/0x110 mm/kasan/report.c:601\n pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35\n pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline]\n pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272\n\nFreed by task 906:\nkasan_save_stack+0x33/0x50 mm/kasan/common.c:47\nkasan_save_track+0x14/0x30 mm/kasan/common.c:68\nkasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640\npoison_slab_object mm/kasan/common.c:241 [inline]\n__kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257\nkasan_slab_free include/linux/kasan.h:184 [inline]\nslab_free_hook mm/slub.c:2121 [inline]\nslab_free mm/slub.c:4299 [inline]\nkfree+0x105/0x340 mm/slub.c:4409\npvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline]\npvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158\n\n[Analyze]\nTask A set disconnect_flag = !0, which resulted in Task B's condition being met\nand releasing mp, leading to this issue.\n\n[Fix]\nPlace the disconnect_flag assignment operation after all code in pvr2_context_disconnect()\nto avoid this issue.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
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        "1:6.1.47-1+rpt2",
        "1:6.1.47-1+rpt4",
        "1:6.1.54-1+rpt2",
        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1",
        "1:6.6.20-1+rpt1"
      ],
      "ecosystem_specific": {
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            "binary_version": "1:6.1.21-1+rpt1"
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          {
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            "binary_version": "1:6.1.21-1+rpt1"
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            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
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            "binary_version": "1:6.1.47-1+rpt2"
          },
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            "binary_version": "1:6.1.47-1+rpt2"
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          {
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            "binary_version": "1:6.1.47-1+rpt2"
          },
          {
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            "binary_version": "1:6.1.47-1+rpt2"
          },
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            "binary_version": "1:6.1.47-1+rpt4"
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            "binary_version": "1:6.1.47-1+rpt4"
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            "binary_version": "1:6.1.47-1+rpt4"
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            "binary_version": "1:6.1.58-1+rpt2"
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      },
      "database_specific": {
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            "assessment": "commit ancestry (strak rule)",
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            "compiled_filter": false
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            "assessment": "commit ancestry (strak rule)",
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            "upstream_version": "6.1.63",
            "assessment": "upstream version (no usable Linux commit)",
            "upstream_fixed": "6.1.83"
          },
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            "linux_commit": null,
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            "assessment": "upstream version (no usable Linux commit)",
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-26875"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f"
    },
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      "url": "https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475"
    },
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      "url": "https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}