CVE-2025-40070 (GCVE-0-2025-40070)

Vulnerability from cvelistv5 – Published: 2025-10-28 11:48 – Updated: 2025-12-01 06:17
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: pps: fix warning in pps_register_cdev when register device fail Similar to previous commit 2a934fdb01db ("media: v4l2-dev: fix error handling in __video_register_device()"), the release hook should be set before device_register(). Otherwise, when device_register() return error and put_device() try to callback the release function, the below warning may happen. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4760 at drivers/base/core.c:2567 device_release+0x1bd/0x240 drivers/base/core.c:2567 Modules linked in: CPU: 1 UID: 0 PID: 4760 Comm: syz.4.914 Not tainted 6.17.0-rc3+ #1 NONE RIP: 0010:device_release+0x1bd/0x240 drivers/base/core.c:2567 Call Trace: <TASK> kobject_cleanup+0x136/0x410 lib/kobject.c:689 kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0xe9/0x130 lib/kobject.c:737 put_device+0x24/0x30 drivers/base/core.c:3797 pps_register_cdev+0x2da/0x370 drivers/pps/pps.c:402 pps_register_source+0x2f6/0x480 drivers/pps/kapi.c:108 pps_tty_open+0x190/0x310 drivers/pps/clients/pps-ldisc.c:57 tty_ldisc_open+0xa7/0x120 drivers/tty/tty_ldisc.c:432 tty_set_ldisc+0x333/0x780 drivers/tty/tty_ldisc.c:563 tiocsetd drivers/tty/tty_io.c:2429 [inline] tty_ioctl+0x5d1/0x1700 drivers/tty/tty_io.c:2728 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __x64_sys_ioctl+0x194/0x210 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x5f/0x2a0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x76/0x7e </TASK> Before commit c79a39dc8d06 ("pps: Fix a use-after-free"), pps_register_cdev() call device_create() to create pps->dev, which will init dev->release to device_create_release(). Now the comment is outdated, just remove it. Thanks for the reminder from Calvin Owens, 'kfree_pps' should be removed in pps_register_source() to avoid a double free in the failure case.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 785c78ed0d39d1717cca3ef931d3e51337b5e90e , < 38c7bb10aae5118dd48fa7a82f7bf93839bcc320 (git)
Affected: 1a7735ab2cb9747518a7416fb5929e85442dec62 , < 2a194707ca27a3b0523023fa8b446e5ec922dc51 (git)
Affected: c4041b6b0a7a3def8cf3f3d6120ff337bc4c40f7 , < 125527db41805693208ee1aacd7f3ffe6a3a489c (git)
Affected: 91932db1d96b2952299ce30c1c693d834d10ace6 , < 4cbd7450a22c5ee4842fc4175ad06c0c82ea53a8 (git)
Affected: cd3bbcb6b3a7caa5ce67de76723b6d8531fb7f64 , < cf71834a0cfc394c72d62fd6dbb470ee13cf8f5e (git)
Affected: 7e5ee3281dc09014367f5112b6d566ba36ea2d49 , < f01fa3588e0b3cb1540f56d2c6bd99e5b3810234 (git)
Affected: c79a39dc8d060b9e64e8b0fa9d245d44befeefbe , < 0f97564a1fb62f34b3b498e2f12caffbe99c004a (git)
Affected: c79a39dc8d060b9e64e8b0fa9d245d44befeefbe , < b0531cdba5029f897da5156815e3bdafe1e9b88d (git)
Affected: 85241f7de216f8298f6e48540ea13d7dcd100870 (git)
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    Linux Linux Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 5.4.301 , ≤ 5.4.* (semver)
Unaffected: 5.10.246 , ≤ 5.10.* (semver)
Unaffected: 5.15.195 , ≤ 5.15.* (semver)
Unaffected: 6.1.156 , ≤ 6.1.* (semver)
Unaffected: 6.6.112 , ≤ 6.6.* (semver)
Unaffected: 6.12.53 , ≤ 6.12.* (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npps: fix warning in pps_register_cdev when register device fail\n\nSimilar to previous commit 2a934fdb01db (\"media: v4l2-dev: fix error\nhandling in __video_register_device()\"), the release hook should be set\nbefore device_register(). Otherwise, when device_register() return error\nand put_device() try to callback the release function, the below warning\nmay happen.\n\n  ------------[ cut here ]------------\n  WARNING: CPU: 1 PID: 4760 at drivers/base/core.c:2567 device_release+0x1bd/0x240 drivers/base/core.c:2567\n  Modules linked in:\n  CPU: 1 UID: 0 PID: 4760 Comm: syz.4.914 Not tainted 6.17.0-rc3+ #1 NONE\n  RIP: 0010:device_release+0x1bd/0x240 drivers/base/core.c:2567\n  Call Trace:\n   \u003cTASK\u003e\n   kobject_cleanup+0x136/0x410 lib/kobject.c:689\n   kobject_release lib/kobject.c:720 [inline]\n   kref_put include/linux/kref.h:65 [inline]\n   kobject_put+0xe9/0x130 lib/kobject.c:737\n   put_device+0x24/0x30 drivers/base/core.c:3797\n   pps_register_cdev+0x2da/0x370 drivers/pps/pps.c:402\n   pps_register_source+0x2f6/0x480 drivers/pps/kapi.c:108\n   pps_tty_open+0x190/0x310 drivers/pps/clients/pps-ldisc.c:57\n   tty_ldisc_open+0xa7/0x120 drivers/tty/tty_ldisc.c:432\n   tty_set_ldisc+0x333/0x780 drivers/tty/tty_ldisc.c:563\n   tiocsetd drivers/tty/tty_io.c:2429 [inline]\n   tty_ioctl+0x5d1/0x1700 drivers/tty/tty_io.c:2728\n   vfs_ioctl fs/ioctl.c:51 [inline]\n   __do_sys_ioctl fs/ioctl.c:598 [inline]\n   __se_sys_ioctl fs/ioctl.c:584 [inline]\n   __x64_sys_ioctl+0x194/0x210 fs/ioctl.c:584\n   do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n   do_syscall_64+0x5f/0x2a0 arch/x86/entry/syscall_64.c:94\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n   \u003c/TASK\u003e\n\nBefore commit c79a39dc8d06 (\"pps: Fix a use-after-free\"),\npps_register_cdev() call device_create() to create pps-\u003edev, which will\ninit dev-\u003erelease to device_create_release(). Now the comment is outdated,\njust remove it.\n\nThanks for the reminder from Calvin Owens, \u0027kfree_pps\u0027 should be removed\nin pps_register_source() to avoid a double free in the failure case."
        }
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        "dateUpdated": "2025-12-01T06:17:24.328Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/38c7bb10aae5118dd48fa7a82f7bf93839bcc320"
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        {
          "url": "https://git.kernel.org/stable/c/2a194707ca27a3b0523023fa8b446e5ec922dc51"
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          "url": "https://git.kernel.org/stable/c/0f97564a1fb62f34b3b498e2f12caffbe99c004a"
        },
        {
          "url": "https://git.kernel.org/stable/c/b0531cdba5029f897da5156815e3bdafe1e9b88d"
        }
      ],
      "title": "pps: fix warning in pps_register_cdev when register device fail",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40070",
    "datePublished": "2025-10-28T11:48:38.838Z",
    "dateReserved": "2025-04-16T07:20:57.159Z",
    "dateUpdated": "2025-12-01T06:17:24.328Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40070\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-28T12:15:41.493\",\"lastModified\":\"2025-10-30T15:05:32.197\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npps: fix warning in pps_register_cdev when register device fail\\n\\nSimilar to previous commit 2a934fdb01db (\\\"media: v4l2-dev: fix error\\nhandling in __video_register_device()\\\"), the release hook should be set\\nbefore device_register(). Otherwise, when device_register() return error\\nand put_device() try to callback the release function, the below warning\\nmay happen.\\n\\n  ------------[ cut here ]------------\\n  WARNING: CPU: 1 PID: 4760 at drivers/base/core.c:2567 device_release+0x1bd/0x240 drivers/base/core.c:2567\\n  Modules linked in:\\n  CPU: 1 UID: 0 PID: 4760 Comm: syz.4.914 Not tainted 6.17.0-rc3+ #1 NONE\\n  RIP: 0010:device_release+0x1bd/0x240 drivers/base/core.c:2567\\n  Call Trace:\\n   \u003cTASK\u003e\\n   kobject_cleanup+0x136/0x410 lib/kobject.c:689\\n   kobject_release lib/kobject.c:720 [inline]\\n   kref_put include/linux/kref.h:65 [inline]\\n   kobject_put+0xe9/0x130 lib/kobject.c:737\\n   put_device+0x24/0x30 drivers/base/core.c:3797\\n   pps_register_cdev+0x2da/0x370 drivers/pps/pps.c:402\\n   pps_register_source+0x2f6/0x480 drivers/pps/kapi.c:108\\n   pps_tty_open+0x190/0x310 drivers/pps/clients/pps-ldisc.c:57\\n   tty_ldisc_open+0xa7/0x120 drivers/tty/tty_ldisc.c:432\\n   tty_set_ldisc+0x333/0x780 drivers/tty/tty_ldisc.c:563\\n   tiocsetd drivers/tty/tty_io.c:2429 [inline]\\n   tty_ioctl+0x5d1/0x1700 drivers/tty/tty_io.c:2728\\n   vfs_ioctl fs/ioctl.c:51 [inline]\\n   __do_sys_ioctl fs/ioctl.c:598 [inline]\\n   __se_sys_ioctl fs/ioctl.c:584 [inline]\\n   __x64_sys_ioctl+0x194/0x210 fs/ioctl.c:584\\n   do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\\n   do_syscall_64+0x5f/0x2a0 arch/x86/entry/syscall_64.c:94\\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n   \u003c/TASK\u003e\\n\\nBefore commit c79a39dc8d06 (\\\"pps: Fix a use-after-free\\\"),\\npps_register_cdev() call device_create() to create pps-\u003edev, which will\\ninit dev-\u003erelease to device_create_release(). Now the comment is outdated,\\njust remove it.\\n\\nThanks for the reminder from Calvin Owens, \u0027kfree_pps\u0027 should be removed\\nin pps_register_source() to avoid a double free in the failure case.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0f97564a1fb62f34b3b498e2f12caffbe99c004a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/125527db41805693208ee1aacd7f3ffe6a3a489c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2a194707ca27a3b0523023fa8b446e5ec922dc51\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/38c7bb10aae5118dd48fa7a82f7bf93839bcc320\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4cbd7450a22c5ee4842fc4175ad06c0c82ea53a8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b0531cdba5029f897da5156815e3bdafe1e9b88d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cf71834a0cfc394c72d62fd6dbb470ee13cf8f5e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f01fa3588e0b3cb1540f56d2c6bd99e5b3810234\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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