CVE-2022-48987

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-48987
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48987.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-48987
Downstream
Related
Published
2024-10-21T20:06:03Z
Modified
2025-10-21T08:55:28.706478Z
Summary
media: v4l2-dv-timings.c: fix too strict blanking sanity checks
Details

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

media: v4l2-dv-timings.c: fix too strict blanking sanity checks

Sanity checks were added to verify the v4l2bttimings blanking fields in order to avoid integer overflows when userspace passes weird values.

But that assumed that userspace would correctly fill in the front porch, backporch and sync values, but sometimes all you know is the total blanking, which is then assigned to just one of these fields.

And that can fail with these checks.

So instead set a maximum for the total horizontal and vertical blanking and check that each field remains below that.

That is still sufficient to avoid integer overflows, but it also allows for more flexibility in how userspace fills in these fields.

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
15ded23db134da975b49ea99770de0346c193b24
Fixed
0d73b49c4037199472b29574ae21c21aef493971
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3d43b2b8a3cdadd6cef9ac8ef5d156b6214a01c8
Fixed
a2b56627c0d13009e02f6f2c0206c0451ed19a0e
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9cf9211635b68e8e0c8cb88d43ca7dc83e4632aa
Fixed
2572ab14b73aa45b6ae7e4c089ccf119fed5cf89
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b4a3a01762ae072c7f6ff2ff53b5019761288346
Fixed
4afc77068e36cee45b39d4fdc7513de26980f72c
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
683015ae163481457a16fad2317af66360dc4762
Fixed
32f01f0306a98629508f84d7ef0d1d037bc274a2
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
491c0959f01d87bcbd5a1498bc70e0a3382c65a8
Fixed
6fb8bc29bfa80707994a63cc97e2f9920e0b0608
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
dc7276c3f6ca008be1faf531f84b49906c9bcf7f
Fixed
d3d14cdf1c7ae2caa3e999bae95ba99e955fb7c3
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4b6d66a45ed34a15721cb9e11492fa1a24bc83df
Fixed
5eef2141776da02772c44ec406d6871a790761ee

Affected versions

v4.*

v4.14.298
v4.14.299
v4.14.300
v4.14.301
v4.19.264
v4.19.265
v4.19.266
v4.19.267
v4.19.268
v4.9.332
v4.9.333
v4.9.334
v4.9.335

v5.*

v5.10.153
v5.10.154
v5.10.155
v5.10.156
v5.10.157
v5.10.158
v5.15.77
v5.15.78
v5.15.79
v5.15.80
v5.15.81
v5.15.82
v5.4.223
v5.4.224
v5.4.225
v5.4.226

v6.*

v6.0.10
v6.0.11
v6.0.12
v6.0.7
v6.0.8
v6.0.9

Database specific

vanir_signatures

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        "target": {
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        },
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            "function_hash": "24552138738169863162938895238603598896"
        },
        "signature_type": "Function",
        "id": "CVE-2022-48987-4ad08ad8",
        "target": {
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        },
        "signature_type": "Function",
        "id": "CVE-2022-48987-4d804d16",
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        "signature_type": "Line",
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        "target": {
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a2b56627c0d13009e02f6f2c0206c0451ed19a0e",
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        "signature_type": "Line",
        "id": "CVE-2022-48987-7375b44b",
        "target": {
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        },
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        "deprecated": false
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    {
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        "id": "CVE-2022-48987-8852fd9f",
        "target": {
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        },
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        "deprecated": false
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        "deprecated": false
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.9.332
Fixed
4.9.336
Type
ECOSYSTEM
Events
Introduced
4.14.298
Fixed
4.14.302
Type
ECOSYSTEM
Events
Introduced
4.19.264
Fixed
4.19.269
Type
ECOSYSTEM
Events
Introduced
5.4.223
Fixed
5.4.227
Type
ECOSYSTEM
Events
Introduced
5.10.153
Fixed
5.10.159
Type
ECOSYSTEM
Events
Introduced
5.15.77
Fixed
5.15.83
Type
ECOSYSTEM
Events
Introduced
6.0.7
Fixed
6.0.13