CVE-2023-53360

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-53360
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53360.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-53360
Downstream
Related
Published
2025-09-17T14:56:50Z
Modified
2025-10-21T16:45:19.612021Z
Summary
NFSv4.2: Rework scratch handling for READ_PLUS (again)
Details

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

NFSv4.2: Rework scratch handling for READ_PLUS (again)

I found that the read code might send multiple requests using the same nfspgioheader, but nfs4procreadsetup() is only called once. This is how we ended up occasionally double-freeing the scratch buffer, but also means we set a NULL pointer but non-zero length to the xdr scratch buffer. This results in an oops the first time decoding needs to copy something to scratch, which frequently happens when decoding READPLUS hole segments.

I fix this by moving scratch handling into the pageio read code. I provide a function to allocate scratch space for decoding read replies, and free the scratch buffer when the nfspgioheader is freed.

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
886959f425b6a936a30b82a297ae3aecb3b8230f
Fixed
adac9f0ddd2b291c7ce41f549fdb27a13616cff5
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
fbd2a05f29a95d5b42b294bf47e55a711424965b
Fixed
a2f4cb206bd94b3f4a7bb05fcdce9525283b5681
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
fbd2a05f29a95d5b42b294bf47e55a711424965b
Fixed
ae5d5672f1db711e91db6f52df5cb16ecd8f5692
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
fbd2a05f29a95d5b42b294bf47e55a711424965b
Fixed
303a78052091c81e9003915c521fdca1c7e117af

Affected versions

v6.*

v6.3
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
v6.4.1
v6.4.10
v6.4.11
v6.4.12
v6.4.13
v6.4.14
v6.4.15
v6.4.2
v6.4.3
v6.4.4
v6.4.5
v6.4.6
v6.4.7
v6.4.8
v6.4.9
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.5.1
v6.5.2

Database specific

vanir_signatures

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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@adac9f0ddd2b291c7ce41f549fdb27a13616cff5",
        "target": {
            "file": "fs/nfs/nfs4proc.c"
        },
        "id": "CVE-2023-53360-867ce94f"
    },
    {
        "signature_version": "v1",
        "digest": {
            "function_hash": "54813888610767913829881179870122106830",
            "length": 318.0
        },
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@adac9f0ddd2b291c7ce41f549fdb27a13616cff5",
        "target": {
            "function": "nfs42_read_plus_support",
            "file": "fs/nfs/nfs4proc.c"
        },
        "id": "CVE-2023-53360-8d440cce"
    },
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        "signature_version": "v1",
        "digest": {
            "function_hash": "226837353341923921436691517039758714827",
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        "target": {
            "function": "nfs_readhdr_free",
            "file": "fs/nfs/read.c"
        },
        "id": "CVE-2023-53360-8e6e7e02"
    },
    {
        "signature_version": "v1",
        "digest": {
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        "target": {
            "file": "fs/nfs/nfs42xdr.c"
        },
        "id": "CVE-2023-53360-99c825dd"
    },
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        "signature_version": "v1",
        "digest": {
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        "target": {
            "file": "fs/nfs/internal.h"
        },
        "id": "CVE-2023-53360-af62ddf5"
    },
    {
        "signature_version": "v1",
        "digest": {
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        "target": {
            "file": "fs/nfs/internal.h"
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        "id": "CVE-2023-53360-b0857bb8"
    },
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        "signature_version": "v1",
        "digest": {
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        "target": {
            "file": "fs/nfs/nfs4proc.c"
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        "id": "CVE-2023-53360-e0bde99f"
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        "signature_version": "v1",
        "digest": {
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        "target": {
            "file": "fs/nfs/read.c"
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        "id": "CVE-2023-53360-e520b9f8"
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        "signature_version": "v1",
        "digest": {
            "function_hash": "53156161211847514110912610138894127813",
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        "target": {
            "function": "nfs4_xdr_dec_read_plus",
            "file": "fs/nfs/nfs42xdr.c"
        },
        "id": "CVE-2023-53360-e9beac40"
    },
    {
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
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        "target": {
            "file": "fs/nfs/nfs42xdr.c"
        },
        "id": "CVE-2023-53360-ec3c17ab"
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.4.0
Fixed
6.4.16
Type
ECOSYSTEM
Events
Introduced
6.5.0
Fixed
6.5.3