FKIE_CVE-2025-40070

Vulnerability from fkie_nvd - Published: 2025-10-28 12:15 - Updated: 2026-06-17 09:21
Severity
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 Now the comment is outdated, just remove it.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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f97564a1fb62f34b3b498e2f12caffbe99c004a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/125527db41805693208ee1aacd7f3ffe6a3a489c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2a194707ca27a3b0523023fa8b446e5ec922dc51
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/38c7bb10aae5118dd48fa7a82f7bf93839bcc320
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4cbd7450a22c5ee4842fc4175ad06c0c82ea53a8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b0531cdba5029f897da5156815e3bdafe1e9b88d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf71834a0cfc394c72d62fd6dbb470ee13cf8f5e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f01fa3588e0b3cb1540f56d2c6bd99e5b3810234
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pps/kapi.c",
            "drivers/pps/pps.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "38c7bb10aae5118dd48fa7a82f7bf93839bcc320",
              "status": "affected",
              "version": "785c78ed0d39d1717cca3ef931d3e51337b5e90e",
              "versionType": "git"
            },
            {
              "lessThan": "2a194707ca27a3b0523023fa8b446e5ec922dc51",
              "status": "affected",
              "version": "1a7735ab2cb9747518a7416fb5929e85442dec62",
              "versionType": "git"
            },
            {
              "lessThan": "125527db41805693208ee1aacd7f3ffe6a3a489c",
              "status": "affected",
              "version": "c4041b6b0a7a3def8cf3f3d6120ff337bc4c40f7",
              "versionType": "git"
            },
            {
              "lessThan": "4cbd7450a22c5ee4842fc4175ad06c0c82ea53a8",
              "status": "affected",
              "version": "91932db1d96b2952299ce30c1c693d834d10ace6",
              "versionType": "git"
            },
            {
              "lessThan": "cf71834a0cfc394c72d62fd6dbb470ee13cf8f5e",
              "status": "affected",
              "version": "cd3bbcb6b3a7caa5ce67de76723b6d8531fb7f64",
              "versionType": "git"
            },
            {
              "lessThan": "f01fa3588e0b3cb1540f56d2c6bd99e5b3810234",
              "status": "affected",
              "version": "7e5ee3281dc09014367f5112b6d566ba36ea2d49",
              "versionType": "git"
            },
            {
              "lessThan": "0f97564a1fb62f34b3b498e2f12caffbe99c004a",
              "status": "affected",
              "version": "c79a39dc8d060b9e64e8b0fa9d245d44befeefbe",
              "versionType": "git"
            },
            {
              "lessThan": "b0531cdba5029f897da5156815e3bdafe1e9b88d",
              "status": "affected",
              "version": "c79a39dc8d060b9e64e8b0fa9d245d44befeefbe",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "85241f7de216f8298f6e48540ea13d7dcd100870",
              "versionType": "git"
            },
            {
              "lessThan": "5.4.301",
              "status": "affected",
              "version": "5.4.291",
              "versionType": "semver"
            },
            {
              "lessThan": "5.10.246",
              "status": "affected",
              "version": "5.10.235",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.195",
              "status": "affected",
              "version": "5.15.179",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.156",
              "status": "affected",
              "version": "6.1.129",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.112",
              "status": "affected",
              "version": "6.6.76",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.53",
              "status": "affected",
              "version": "6.12.13",
              "versionType": "semver"
            },
            {
              "lessThan": "6.14",
              "status": "affected",
              "version": "6.13.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pps/kapi.c",
            "drivers/pps/pps.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.301",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.246",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.195",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.156",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "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."
    }
  ],
  "id": "CVE-2025-40070",
  "lastModified": "2026-06-17T09:21:12.840",
  "metrics": {},
  "published": "2025-10-28T12:15:41.493",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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