CVE-2022-48801
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-48801
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48801.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-48801
- Downstream
- Related
- Published
- 2024-07-16T11:43:54Z
- Modified
- 2025-10-08T06:03:31.343667Z
- Summary
- iio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTL
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
iio: buffer: Fix file related error handling in IIOBUFFERGETFDIOCTL
If we fail to copy the just created file descriptor to userland, we try to clean up by putting back 'fd' and freeing 'ib'. The code uses putunusedfd() for the former which is wrong, as the file descriptor was already published by fdinstall() which gets called internally by anoninode_getfd().
This makes the error handling code leaving a half cleaned up file descriptor table around and a partially destructed 'file' object, allowing userland to play use-after-free tricks on us, by abusing the still usable fd and making the code operate on a dangling 'file->private_data' pointer.
Instead of leaving the kernel in a partially corrupted state, don't attempt to explicitly clean up and leave this to the process exit path that'll release any still valid fds, including the one created by the previous call to anoninodegetfd(). Simply return -EFAULT to indicate the error.
- 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
-
Introducedf73f7f4da581875f9b1f2fb8ebd1ab15ed634488Fixedb7f54894aa7517d2b6c797a499b9f491e9db9083
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedf73f7f4da581875f9b1f2fb8ebd1ab15ed634488Fixed202071d2518537866d291aa7cf26af54e674f4d4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedf73f7f4da581875f9b1f2fb8ebd1ab15ed634488Fixedc72ea20503610a4a7ba26c769357d31602769c01
Affected versions
v5.*
v5.12
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
v5.15.1
v5.15.10
v5.15.11
v5.15.12
v5.15.13
v5.15.14
v5.15.15
v5.15.16
v5.15.17
v5.15.18
v5.15.19
v5.15.2
v5.15.20
v5.15.21
v5.15.22
v5.15.23
v5.15.3
v5.15.4
v5.15.5
v5.15.6
v5.15.7
v5.15.8
v5.15.9
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
v5.16.1
v5.16.2
v5.16.3
v5.16.4
v5.16.5
v5.16.6
v5.16.7
v5.16.8
v5.16.9
v5.17-rc1
v5.17-rc2
Database specific
{
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"digest": {
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]
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@202071d2518537866d291aa7cf26af54e674f4d4",
"deprecated": false,
"target": {
"file": "drivers/iio/industrialio-buffer.c"
},
"signature_type": "Line",
"id": "CVE-2022-48801-627fe3bd"
},
{
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"deprecated": false,
"target": {
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},
"signature_type": "Line",
"id": "CVE-2022-48801-9a75e73a"
},
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"digest": {
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},
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{
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"target": {
"file": "drivers/iio/industrialio-buffer.c",
"function": "iio_device_buffer_getfd"
},
"signature_type": "Function",
"id": "CVE-2022-48801-abffd186"
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{
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"target": {
"file": "drivers/iio/industrialio-buffer.c",
"function": "iio_device_buffer_getfd"
},
"signature_type": "Function",
"id": "CVE-2022-48801-efd9254b"
}
]
}