CVE-2025-40164

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-40164
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40164.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-40164
Downstream
Published
2025-11-12T10:26:23Z
Modified
2025-11-12T20:21:56.813438Z
Summary
usbnet: Fix using smp_processor_id() in preemptible code warnings
Details

In the Linux kernel, the following vulnerability has been resolved:

usbnet: Fix using smpprocessorid() in preemptible code warnings

Syzbot reported the following warning:

BUG: using smpprocessorid() in preemptible [00000000] code: dhcpcd/2879 caller is usbnetskbreturn+0x74/0x490 drivers/net/usb/usbnet.c:331 CPU: 1 UID: 0 PID: 2879 Comm: dhcpcd Not tainted 6.15.0-rc4-syzkaller-00098-g615dca38c2ea #0 PREEMPT(voluntary) Call Trace: <TASK> _dumpstack lib/dumpstack.c:94 [inline] dumpstacklvl+0x16c/0x1f0 lib/dumpstack.c:120 checkpreemptiondisabled+0xd0/0xe0 lib/smpprocessorid.c:49 usbnetskbreturn+0x74/0x490 drivers/net/usb/usbnet.c:331 usbnetresumerx+0x4b/0x170 drivers/net/usb/usbnet.c:708 usbnetchangemtu+0x1be/0x220 drivers/net/usb/usbnet.c:417 _devsetmtu net/core/dev.c:9443 [inline] netifsetmtuext+0x369/0x5c0 net/core/dev.c:9496 netifsetmtu+0xb0/0x160 net/core/dev.c:9520 devsetmtu+0xae/0x170 net/core/devapi.c:247 devifsioc+0xa31/0x18d0 net/core/devioctl.c:572 devioctl+0x223/0x10e0 net/core/devioctl.c:821 sockdoioctl+0x19d/0x280 net/socket.c:1204 sockioctl+0x42f/0x6a0 net/socket.c:1311 vfsioctl fs/ioctl.c:51 [inline] _dosysioctl fs/ioctl.c:906 [inline] _sesysioctl fs/ioctl.c:892 [inline] _x64sysioctl+0x190/0x200 fs/ioctl.c:892 dosyscallx64 arch/x86/entry/syscall64.c:63 [inline] dosyscall64+0xcd/0x260 arch/x86/entry/syscall64.c:94 entrySYSCALL64afterhwframe+0x77/0x7f

For historical and portability reasons, the netifrx() is usually run in the softirq or interrupt context, this commit therefore add localbhdisable/enable() protection in the usbnetresume_rx().

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
43daa96b166c3cf5ff30dfac0c5efa2620e4beab
Fixed
0134c7bff14bd50314a4f92b182850ddfc38e255
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
43daa96b166c3cf5ff30dfac0c5efa2620e4beab
Fixed
327cd4b68b4398b6c24f10eb2b2533ffbfc10185

Affected versions

v4.*

v4.10
v4.10-rc1
v4.10-rc2
v4.10-rc3
v4.10-rc4
v4.10-rc5
v4.10-rc6
v4.10-rc7
v4.10-rc8
v4.11
v4.11-rc1
v4.11-rc2
v4.11-rc3
v4.11-rc4
v4.11-rc5
v4.11-rc6
v4.11-rc7
v4.11-rc8
v4.12
v4.12-rc1
v4.12-rc2
v4.12-rc3
v4.12-rc4
v4.12-rc5
v4.12-rc6
v4.12-rc7
v4.13
v4.13-rc1
v4.13-rc2
v4.13-rc3
v4.13-rc4
v4.13-rc5
v4.13-rc6
v4.13-rc7
v4.14
v4.14-rc1
v4.14-rc2
v4.14-rc3
v4.14-rc4
v4.14-rc5
v4.14-rc6
v4.14-rc7
v4.14-rc8
v4.15
v4.15-rc1
v4.15-rc2
v4.15-rc3
v4.15-rc4
v4.15-rc5
v4.15-rc6
v4.15-rc7
v4.15-rc8
v4.15-rc9
v4.16
v4.16-rc1
v4.16-rc2
v4.16-rc3
v4.16-rc4
v4.16-rc5
v4.16-rc6
v4.16-rc7
v4.17
v4.17-rc1
v4.17-rc2
v4.17-rc3
v4.17-rc4
v4.17-rc5
v4.17-rc6
v4.17-rc7
v4.18
v4.18-rc1
v4.18-rc2
v4.18-rc3
v4.18-rc4
v4.18-rc5
v4.18-rc6
v4.18-rc7
v4.18-rc8
v4.19
v4.19-rc1
v4.19-rc2
v4.19-rc3
v4.19-rc4
v4.19-rc5
v4.19-rc6
v4.19-rc7
v4.19-rc8
v4.20
v4.20-rc1
v4.20-rc2
v4.20-rc3
v4.20-rc4
v4.20-rc5
v4.20-rc6
v4.20-rc7
v4.7
v4.7-rc6
v4.7-rc7
v4.8
v4.8-rc1
v4.8-rc2
v4.8-rc3
v4.8-rc4
v4.8-rc5
v4.8-rc6
v4.8-rc7
v4.8-rc8
v4.9
v4.9-rc1
v4.9-rc2
v4.9-rc3
v4.9-rc4
v4.9-rc5
v4.9-rc6
v4.9-rc7
v4.9-rc8

v5.*

v5.0
v5.0-rc1
v5.0-rc2
v5.0-rc3
v5.0-rc4
v5.0-rc5
v5.0-rc6
v5.0-rc7
v5.0-rc8
v5.1
v5.1-rc1
v5.1-rc2
v5.1-rc3
v5.1-rc4
v5.1-rc5
v5.1-rc6
v5.1-rc7
v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.11
v5.11-rc1
v5.11-rc2
v5.11-rc3
v5.11-rc4
v5.11-rc5
v5.11-rc6
v5.11-rc7
v5.12
v5.12-rc1
v5.12-rc1-dontuse
v5.12-rc2
v5.12-rc3
v5.12-rc4
v5.12-rc5
v5.12-rc6
v5.12-rc7
v5.12-rc8
v5.13
v5.13-rc1
v5.13-rc2
v5.13-rc3
v5.13-rc4
v5.13-rc5
v5.13-rc6
v5.13-rc7
v5.14
v5.14-rc1
v5.14-rc2
v5.14-rc3
v5.14-rc4
v5.14-rc5
v5.14-rc6
v5.14-rc7
v5.15
v5.15-rc1
v5.15-rc2
v5.15-rc3
v5.15-rc4
v5.15-rc5
v5.15-rc6
v5.15-rc7
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.17
v5.17-rc1
v5.17-rc2
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
v5.18-rc1
v5.18-rc2
v5.18-rc3
v5.18-rc4
v5.18-rc5
v5.18-rc6
v5.18-rc7
v5.19
v5.19-rc1
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8
v5.2
v5.2-rc1
v5.2-rc2
v5.2-rc3
v5.2-rc4
v5.2-rc5
v5.2-rc6
v5.2-rc7
v5.3
v5.3-rc1
v5.3-rc2
v5.3-rc3
v5.3-rc4
v5.3-rc5
v5.3-rc6
v5.3-rc7
v5.3-rc8
v5.4
v5.4-rc1
v5.4-rc2
v5.4-rc3
v5.4-rc4
v5.4-rc5
v5.4-rc6
v5.4-rc7
v5.4-rc8
v5.5
v5.5-rc1
v5.5-rc2
v5.5-rc3
v5.5-rc4
v5.5-rc5
v5.5-rc6
v5.5-rc7
v5.6
v5.6-rc1
v5.6-rc2
v5.6-rc3
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7
v5.8
v5.8-rc1
v5.8-rc2
v5.8-rc3
v5.8-rc4
v5.8-rc5
v5.8-rc6
v5.8-rc7
v5.9
v5.9-rc1
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8

v6.*

v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.1
v6.1-rc1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.13
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.14
v6.14-rc1
v6.14-rc2
v6.14-rc3
v6.14-rc4
v6.14-rc5
v6.14-rc6
v6.14-rc7
v6.15
v6.15-rc1
v6.15-rc2
v6.15-rc3
v6.15-rc4
v6.15-rc5
v6.15-rc6
v6.15-rc7
v6.16
v6.16-rc1
v6.16-rc2
v6.16-rc3
v6.16-rc4
v6.16-rc5
v6.16-rc6
v6.16-rc7
v6.17
v6.17-rc1
v6.17-rc2
v6.17-rc3
v6.17-rc4
v6.17-rc5
v6.17-rc6
v6.17-rc7
v6.17.1
v6.17.2
v6.17.3
v6.17.4
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.8
v6.8-rc1
v6.8-rc2
v6.8-rc3
v6.8-rc4
v6.8-rc5
v6.8-rc6
v6.8-rc7
v6.9
v6.9-rc1
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7

Database specific

vanir_signatures

[
    {
        "digest": {
            "line_hashes": [
                "20925523364433562944399627570854245232",
                "308875407975415729389691464609472076553",
                "265597986903625423716918541424073273418",
                "307043526929131939725261386375385555034",
                "74398590039782447429349185816575381769",
                "137852146855077785603663547934985902936",
                "215327502610369147710324706123056565441"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "drivers/net/usb/usbnet.c"
        },
        "signature_type": "Line",
        "id": "CVE-2025-40164-71a01d01",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0134c7bff14bd50314a4f92b182850ddfc38e255"
    },
    {
        "digest": {
            "length": 370.0,
            "function_hash": "123693641883462803287642356193394198416"
        },
        "target": {
            "file": "drivers/net/usb/usbnet.c",
            "function": "usbnet_resume_rx"
        },
        "signature_type": "Function",
        "id": "CVE-2025-40164-a897227f",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@327cd4b68b4398b6c24f10eb2b2533ffbfc10185"
    },
    {
        "digest": {
            "length": 370.0,
            "function_hash": "123693641883462803287642356193394198416"
        },
        "target": {
            "file": "drivers/net/usb/usbnet.c",
            "function": "usbnet_resume_rx"
        },
        "signature_type": "Function",
        "id": "CVE-2025-40164-ac3b8e36",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0134c7bff14bd50314a4f92b182850ddfc38e255"
    },
    {
        "digest": {
            "line_hashes": [
                "20925523364433562944399627570854245232",
                "308875407975415729389691464609472076553",
                "265597986903625423716918541424073273418",
                "307043526929131939725261386375385555034",
                "74398590039782447429349185816575381769",
                "137852146855077785603663547934985902936",
                "215327502610369147710324706123056565441"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "drivers/net/usb/usbnet.c"
        },
        "signature_type": "Line",
        "id": "CVE-2025-40164-ba8efe76",
        "signature_version": "v1",
        "deprecated": false,
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@327cd4b68b4398b6c24f10eb2b2533ffbfc10185"
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.7.0
Fixed
6.17.5