CVE-2025-21739

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-21739
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21739.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-21739
Downstream
Related
Published
2025-02-27T02:12:14Z
Modified
2025-10-17T21:20:38.103010Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
scsi: ufs: core: Fix use-after free in init error and remove paths
Details

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

scsi: ufs: core: Fix use-after free in init error and remove paths

devmblkcryptoprofileinit() registers a cleanup handler to run when the associated (platform-) device is being released. For UFS, the crypto private data and pointers are stored as part of the ufshba's data structure 'struct ufshba::cryptoprofile'. This structure is allocated as part of the underlying ufshcd and therefore Scsihost allocation.

During driver release or during error handling in ufshcdpltfrminit(), this structure is released as part of ufshcddeallochost() before the (platform-) device associated with the crypto call above is released. Once this device is released, the crypto cleanup code will run, using the just-released 'struct ufshba::cryptoprofile'. This causes a use-after-free situation:

Call trace: kfree+0x60/0x2d8 (P) kvfree+0x44/0x60 blkcryptoprofiledestroycallback+0x28/0x70 devmactionrelease+0x1c/0x30 releasenodes+0x6c/0x108 devresreleaseall+0x98/0x100 deviceunbindcleanup+0x20/0x70 reallyprobe+0x218/0x2d0

In other words, the initialisation code flow is:

platform-device probe ufshcdpltfrminit() ufshcdallochost() scsihostalloc() allocation of struct ufshba creation of scsi-host devices devmblkcryptoprofile_init() devm registration of cleanup handler using platform-device

and during error handling of ufshcdpltfrminit() or during driver removal:

ufshcddeallochost() scsihostput() putdevice(scsi-host) release of struct ufshba put_device(platform-device) crypto cleanup handler

To fix this use-after free, change ufshcdallochost() to register a devres action to automatically cleanup the underlying SCSI device on ufshcd destruction, without requiring explicit calls to ufshcddeallochost(). This way:

* the crypto profile and all other ufs_hba-owned resources are
  destroyed before SCSI (as they've been registered after)
* a memleak is plugged in tc-dwc-g210-pci.c remove() as a
  side-effect
* EXPORT_SYMBOL_GPL(ufshcd_dealloc_host) can be removed fully as
  it's not needed anymore
* no future drivers using ufshcd_alloc_host() could ever forget
  adding the cleanup
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
d76d9d7d1009968dd3a0fc30e5f5ee9fbffc1350
Fixed
0c77c0d754fe83cb154715fcfec6c3faef94f207
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
d76d9d7d1009968dd3a0fc30e5f5ee9fbffc1350
Fixed
9c185beae09a3eb85f54777edafa227f7e03075d
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
d76d9d7d1009968dd3a0fc30e5f5ee9fbffc1350
Fixed
f8fb2403ddebb5eea0033d90d9daae4c88749ada

Affected versions

v5.*

v5.11
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

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
v6.12.1
v6.12.10
v6.12.11
v6.12.12
v6.12.13
v6.12.2
v6.12.3
v6.12.4
v6.12.5
v6.12.6
v6.12.7
v6.12.8
v6.12.9
v6.13
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.13.1
v6.13.2
v6.14-rc1
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

[
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        "id": "CVE-2025-21739-0e235c3b",
        "deprecated": false,
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        "target": {
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    },
    {
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        },
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        "signature_version": "v1",
        "signature_type": "Function"
    },
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        "deprecated": false,
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            "function_hash": "35455604970542176721803696668103947374"
        },
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            "file": "drivers/ufs/host/ufshcd-pci.c",
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        },
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        "signature_version": "v1",
        "signature_type": "Function"
    },
    {
        "id": "CVE-2025-21739-2bd2677f",
        "deprecated": false,
        "digest": {
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        },
        "target": {
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        "signature_version": "v1",
        "signature_type": "Function"
    },
    {
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        "deprecated": false,
        "digest": {
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        "signature_version": "v1",
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    },
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        "id": "CVE-2025-21739-34b30173",
        "deprecated": false,
        "digest": {
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        "digest": {
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    },
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        "id": "CVE-2025-21739-5faa5b1b",
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        "signature_version": "v1",
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        "digest": {
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    {
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        "digest": {
            "length": 199.0,
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        },
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        "signature_type": "Function"
    },
    {
        "id": "CVE-2025-21739-72bdd075",
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        "digest": {
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]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.12.0
Fixed
6.12.14
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.13.3