cve-2024-26875
Vulnerability from cvelistv5
Published
2024-04-17 10:27
Modified
2025-02-11 21:47
Severity ?
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix uaf in pvr2_context_set_notify [Syzbot reported] BUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26 CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline] pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272 Freed by task 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline] pvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158 [Analyze] Task A set disconnect_flag = !0, which resulted in Task B's condition being met and releasing mp, leading to this issue. [Fix] Place the disconnect_flag assignment operation after all code in pvr2_context_disconnect() to avoid this issue.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Impacted products
Vendor Product Version
Linux Linux Version: e5be15c63804e05b5a94197524023702a259e308
Version: e5be15c63804e05b5a94197524023702a259e308
Version: e5be15c63804e05b5a94197524023702a259e308
Version: e5be15c63804e05b5a94197524023702a259e308
Version: e5be15c63804e05b5a94197524023702a259e308
Version: e5be15c63804e05b5a94197524023702a259e308
Version: e5be15c63804e05b5a94197524023702a259e308
Version: e5be15c63804e05b5a94197524023702a259e308
Version: e5be15c63804e05b5a94197524023702a259e308
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   Linux Linux Version: 2.6.26
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          "value": "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 \u003cTASK\u003e\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\u0027s 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."
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26875",
    "datePublished": "2024-04-17T10:27:33.914Z",
    "dateReserved": "2024-02-19T14:20:24.185Z",
    "dateUpdated": "2025-02-11T21:47:07.560Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1",
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[Soluci\u00f3n] Coloque la operaci\u00f3n de asignaci\u00f3nconnect_flag despu\u00e9s de todo el c\u00f3digo en pvr2_context_disconnect() para evitar este problema.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":6.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.5,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
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\"https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475\"}, {\"url\": \"https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592\"}, {\"url\": \"https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a\"}, {\"url\": \"https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16\"}, {\"url\": \"https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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 \u003cTASK\u003e\\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\u0027s 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.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:49:11.719Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26875\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-02-11T21:47:07.560Z\", \"dateReserved\": \"2024-02-19T14:20:24.185Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T10:27:33.914Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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