CVE-2023-53473

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-53473
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53473.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-53473
Downstream
Related
Published
2025-10-01T11:42:42.875Z
Modified
2025-11-15T14:24:37.452871Z
Summary
ext4: improve error handling from ext4_dirhash()
Details

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

ext4: improve error handling from ext4_dirhash()

The ext4_dirhash() will almost never fail, especially when the hash tree feature was first introduced. However, with the addition of support of encrypted, casefolded file names, that function can most certainly fail today.

So make sure the callers of ext4_dirhash() properly check for failures, and reflect the errors back up to their callers.

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
b886ee3e778ec2ad43e276fd378ab492cf6819b7
Fixed
b2531936118deb3f479c4fa1bcd787b74b8faa6a
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b886ee3e778ec2ad43e276fd378ab492cf6819b7
Fixed
f68876aeef96ef8b708ab10b9cb47ce0a5adb424
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b886ee3e778ec2ad43e276fd378ab492cf6819b7
Fixed
70d579aefa652a06af97e013e3fbbabbe5a43553
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b886ee3e778ec2ad43e276fd378ab492cf6819b7
Fixed
c1fae027da61fe8e7eb99f7244297e81bc0f1e43
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b886ee3e778ec2ad43e276fd378ab492cf6819b7
Fixed
4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786

Affected versions

v5.*

v5.1
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
v5.15.1
v5.15.10
v5.15.100
v5.15.101
v5.15.102
v5.15.103
v5.15.104
v5.15.105
v5.15.106
v5.15.107
v5.15.108
v5.15.109
v5.15.11
v5.15.110
v5.15.111
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
v5.15.24
v5.15.25
v5.15.26
v5.15.27
v5.15.28
v5.15.29
v5.15.3
v5.15.30
v5.15.31
v5.15.32
v5.15.33
v5.15.34
v5.15.35
v5.15.36
v5.15.37
v5.15.38
v5.15.39
v5.15.4
v5.15.40
v5.15.41
v5.15.42
v5.15.43
v5.15.44
v5.15.45
v5.15.46
v5.15.47
v5.15.48
v5.15.49
v5.15.5
v5.15.50
v5.15.51
v5.15.52
v5.15.53
v5.15.54
v5.15.55
v5.15.56
v5.15.57
v5.15.58
v5.15.59
v5.15.6
v5.15.60
v5.15.61
v5.15.62
v5.15.63
v5.15.64
v5.15.65
v5.15.66
v5.15.67
v5.15.68
v5.15.69
v5.15.7
v5.15.70
v5.15.71
v5.15.72
v5.15.73
v5.15.74
v5.15.75
v5.15.76
v5.15.77
v5.15.78
v5.15.79
v5.15.8
v5.15.80
v5.15.81
v5.15.82
v5.15.83
v5.15.84
v5.15.85
v5.15.86
v5.15.87
v5.15.88
v5.15.89
v5.15.9
v5.15.90
v5.15.91
v5.15.92
v5.15.93
v5.15.94
v5.15.95
v5.15.96
v5.15.97
v5.15.98
v5.15.99
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
v6.1.1
v6.1.10
v6.1.11
v6.1.12
v6.1.13
v6.1.14
v6.1.15
v6.1.16
v6.1.17
v6.1.18
v6.1.19
v6.1.2
v6.1.20
v6.1.21
v6.1.22
v6.1.23
v6.1.24
v6.1.25
v6.1.26
v6.1.27
v6.1.28
v6.1.3
v6.1.4
v6.1.5
v6.1.6
v6.1.7
v6.1.8
v6.1.9
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
v6.2.1
v6.2.10
v6.2.11
v6.2.12
v6.2.13
v6.2.14
v6.2.15
v6.2.2
v6.2.3
v6.2.4
v6.2.5
v6.2.6
v6.2.7
v6.2.8
v6.2.9
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.3.1
v6.3.2
v6.4-rc1

Database specific

vanir_signatures

[
    {
        "digest": {
            "length": 852.0,
            "function_hash": "66329919969430896822696264735620007648"
        },
        "target": {
            "file": "fs/ext4/namei.c",
            "function": "dx_make_map"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c1fae027da61fe8e7eb99f7244297e81bc0f1e43",
        "id": "CVE-2023-53473-028ac58e",
        "signature_version": "v1",
        "signature_type": "Function",
        "deprecated": false
    },
    {
        "digest": {
            "length": 3139.0,
            "function_hash": "74627376207162351946178426531942698204"
        },
        "target": {
            "file": "fs/ext4/namei.c",
            "function": "make_indexed_dir"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c1fae027da61fe8e7eb99f7244297e81bc0f1e43",
        "id": "CVE-2023-53473-0d8b84cd",
        "signature_version": "v1",
        "signature_type": "Function",
        "deprecated": false
    },
    {
        "digest": {
            "length": 852.0,
            "function_hash": "66329919969430896822696264735620007648"
        },
        "target": {
            "file": "fs/ext4/namei.c",
            "function": "dx_make_map"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786",
        "id": "CVE-2023-53473-0da4d2cc",
        "signature_version": "v1",
        "signature_type": "Function",
        "deprecated": false
    },
    {
        "digest": {
            "line_hashes": [
                "24467398977952547429086352181011027659",
                "182833169583699186125489794714891184921",
                "190093619879895620863182373275515927985",
                "96605700849681281112417749971502501475"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "fs/ext4/hash.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786",
        "id": "CVE-2023-53473-0eb11942",
        "signature_version": "v1",
        "signature_type": "Line",
        "deprecated": false
    },
    {
        "digest": {
            "length": 3898.0,
            "function_hash": "34281756398156232192060723525603119266"
        },
        "target": {
            "file": "fs/ext4/namei.c",
            "function": "dx_probe"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786",
        "id": "CVE-2023-53473-12da27ac",
        "signature_version": "v1",
        "signature_type": "Function",
        "deprecated": false
    },
    {
        "digest": {
            "line_hashes": [
                "70560658284582490618707061429370086264",
                "233124521147098681222549178205215103033",
                "15610266712741944094699000571730256927",
                "289384652907145131188353464363097984973",
                "307626804541211094185437604482688599815",
                "191628863198881091536757380975668348651",
                "197133992746451625222606066140534694721",
                "60694216651997525279252881866977246178",
                "108946575767496659136746361956236039058",
                "181812860069416422615462331555719971496",
                "166329867036813306099589219274805146270",
                "232709518515597160425727445963685896713",
                "271364367171622346745762778585211146192",
                "270686592822243159072083490234668511571",
                "190347998819397529911929454820444734782",
                "315399669162326292308402480500362070721",
                "182508326892180781735061653836348153124",
                "318740409887040288760486805037183031033",
                "271358135909624630647952918296812844923",
                "84160548082393901283715804759908812142",
                "273021836652900913657450761981128441855",
                "18891832200312117780112674307165283533",
                "308411346326644263121292841021297742761",
                "334896152516560616520250477633170139000",
                "54631516230183819108276206897943636154",
                "136980669055354129091690186069357754143",
                "325626299465364197277118647307647535561",
                "85864726942146341081674581249961939044",
                "306102627645201612824906129207690977452",
                "8243577801184519531649640963165889585",
                "76641597623614599007192643760034927982",
                "159434458258718596858807016993409347788",
                "150601420656775905147876739678766404619",
                "103021329720680863473634393103271320307",
                "60189289627679284610236047521573311996",
                "256526746251101313620537236528977733099",
                "146781770877967785643936167715288225575",
                "28440669888576218255855542228188935964",
                "30054374066688257589518103926497736888",
                "168118254126272929418419167510567758779"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "fs/ext4/namei.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@f68876aeef96ef8b708ab10b9cb47ce0a5adb424",
        "id": "CVE-2023-53473-25006078",
        "signature_version": "v1",
        "signature_type": "Line",
        "deprecated": false
    },
    {
        "digest": {
            "line_hashes": [
                "24467398977952547429086352181011027659",
                "182833169583699186125489794714891184921",
                "190093619879895620863182373275515927985",
                "96605700849681281112417749971502501475"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "fs/ext4/hash.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@f68876aeef96ef8b708ab10b9cb47ce0a5adb424",
        "id": "CVE-2023-53473-2919ad45",
        "signature_version": "v1",
        "signature_type": "Line",
        "deprecated": false
    },
    {
        "digest": {
            "length": 2075.0,
            "function_hash": "277255868318619304507187554293262782328"
        },
        "target": {
            "file": "fs/ext4/namei.c",
            "function": "htree_dirblock_to_tree"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@f68876aeef96ef8b708ab10b9cb47ce0a5adb424",
        "id": "CVE-2023-53473-2ad19755",
        "signature_version": "v1",
        "signature_type": "Function",
        "deprecated": false
    },
    {
        "digest": {
            "line_hashes": [
                "70560658284582490618707061429370086264",
                "233124521147098681222549178205215103033",
                "15610266712741944094699000571730256927",
                "289384652907145131188353464363097984973",
                "307626804541211094185437604482688599815",
                "191628863198881091536757380975668348651",
                "197133992746451625222606066140534694721",
                "60694216651997525279252881866977246178",
                "108946575767496659136746361956236039058",
                "181812860069416422615462331555719971496",
                "166329867036813306099589219274805146270",
                "232709518515597160425727445963685896713",
                "271364367171622346745762778585211146192",
                "270686592822243159072083490234668511571",
                "190347998819397529911929454820444734782",
                "315399669162326292308402480500362070721",
                "182508326892180781735061653836348153124",
                "318740409887040288760486805037183031033",
                "271358135909624630647952918296812844923",
                "84160548082393901283715804759908812142",
                "273021836652900913657450761981128441855",
                "18891832200312117780112674307165283533",
                "308411346326644263121292841021297742761",
                "334896152516560616520250477633170139000",
                "54631516230183819108276206897943636154",
                "136980669055354129091690186069357754143",
                "325626299465364197277118647307647535561",
                "85864726942146341081674581249961939044",
                "306102627645201612824906129207690977452",
                "8243577801184519531649640963165889585",
                "76641597623614599007192643760034927982",
                "159434458258718596858807016993409347788",
                "150601420656775905147876739678766404619",
                "103021329720680863473634393103271320307",
                "60189289627679284610236047521573311996",
                "256526746251101313620537236528977733099",
                "146781770877967785643936167715288225575",
                "28440669888576218255855542228188935964",
                "30054374066688257589518103926497736888",
                "168118254126272929418419167510567758779"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "fs/ext4/namei.c"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c1fae027da61fe8e7eb99f7244297e81bc0f1e43",
        "id": "CVE-2023-53473-410d9792",
        "signature_version": "v1",
        "signature_type": "Line",
        "deprecated": false
    },
    {
        "digest": {
            "length": 1712.0,
            "function_hash": "207499707485037471240723439827038432675"
        },
        "target": {
            "file": "fs/ext4/hash.c",
            "function": "__ext4fs_dirhash"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c1fae027da61fe8e7eb99f7244297e81bc0f1e43",
        "id": "CVE-2023-53473-43834f1d",
        "signature_version": "v1",
        "signature_type": "Function",
        "deprecated": false
    },
    {
        "digest": {
            "length": 837.0,
            "function_hash": "104745141346830460665709909404895791896"
        },
        "target": {
            "file": "fs/ext4/namei.c",
            "function": "ext4_fname_setup_ci_filename"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786",
        "id": "CVE-2023-53473-4a67bab8",
        "signature_version": "v1",
        "signature_type": "Function",
        "deprecated": false
    },
    {
        "digest": {
            "line_hashes": [
                "70560658284582490618707061429370086264",
                "233124521147098681222549178205215103033",
                "15610266712741944094699000571730256927",
                "289384652907145131188353464363097984973",
                "307626804541211094185437604482688599815",
                "191628863198881091536757380975668348651",
                "197133992746451625222606066140534694721",
                "60694216651997525279252881866977246178",
                "108946575767496659136746361956236039058",
                "181812860069416422615462331555719971496",
                "166329867036813306099589219274805146270",
                "232709518515597160425727445963685896713",
                "271364367171622346745762778585211146192",
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]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.2.0
Fixed
5.15.112
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.29
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.2.16
Type
ECOSYSTEM
Events
Introduced
6.3.0
Fixed
6.3.3