CVE-2022-48754 (GCVE-0-2022-48754)
Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2026-08-05 08:52
VLAI
EPSS
VEX
Title
phylib: fix potential use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved:
phylib: fix potential use-after-free
Commit bafbdd527d56 ("phylib: Add device reset GPIO support") added call
to phy_device_reset(phydev) after the put_device() call in phy_detach().
The comment before the put_device() call says that the phydev might go
away with put_device().
Fix potential use-after-free by calling phy_device_reset() before
put_device().
Severity
7.8 (High)
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-25 15:12 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
6 references
Impacted products
16 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
bafbdd527d569c8200521f2f7579f65a044271be , < 67d271760b037ce0806d687ee6057edc8afd4205
(git)
Affected: bafbdd527d569c8200521f2f7579f65a044271be , < f39027cbada43b33566c312e6be3db654ca3ad17 (git) Affected: bafbdd527d569c8200521f2f7579f65a044271be , < bd024e36f68174b1793906c39ca16cee0c9295c2 (git) Affected: bafbdd527d569c8200521f2f7579f65a044271be , < aefaccd19379d6c4620269a162bfb88ff687f289 (git) Affected: bafbdd527d569c8200521f2f7579f65a044271be , < cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af (git) Affected: bafbdd527d569c8200521f2f7579f65a044271be , < cbda1b16687580d5beee38273f6241ae3725960c (git) |
guessed | |
| Linux | Linux |
Affected:
4.16
Unaffected: 0 , < 4.16 (semver) Unaffected: 4.19.228 , ≤ 4.19.* (semver) Unaffected: 5.4.176 , ≤ 5.4.* (semver) Unaffected: 5.10.96 , ≤ 5.10.* (semver) Unaffected: 5.15.19 , ≤ 5.15.* (semver) Unaffected: 5.16.5 , ≤ 5.16.* (semver) Unaffected: 5.17 , ≤ * (original_commit_for_fix) |
guessed | |
| linux | linux_kernel |
Affected:
bafbdd527d56 , < 67d271760b03
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Affected:
bafbdd527d56 , < f39027cbada4
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Affected:
bafbdd527d56 , < bd024e36f681
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Affected:
bafbdd527d56 , < aefaccd19379
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Affected:
bafbdd527d56 , < cb2fab10fc5e
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Affected:
bafbdd527d56 , < cbda1b166875
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Affected:
4.16
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Unaffected:
0 , < 4.16
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Unaffected:
4.19.228 , ≤ 4.20
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Unaffected:
5.4.176 , ≤ 5.5
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Unaffected:
5.10.96 , ≤ 5.11
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Unaffected:
5.15.19 , ≤ 5.16
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Unaffected:
5.16.5 , ≤ 5.17
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| linux | linux_kernel |
Unaffected:
5.17
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
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],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/phy/phy_device.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "67d271760b037ce0806d687ee6057edc8afd4205",
"status": "affected",
"version": "bafbdd527d569c8200521f2f7579f65a044271be",
"versionType": "git"
},
{
"lessThan": "f39027cbada43b33566c312e6be3db654ca3ad17",
"status": "affected",
"version": "bafbdd527d569c8200521f2f7579f65a044271be",
"versionType": "git"
},
{
"lessThan": "bd024e36f68174b1793906c39ca16cee0c9295c2",
"status": "affected",
"version": "bafbdd527d569c8200521f2f7579f65a044271be",
"versionType": "git"
},
{
"lessThan": "aefaccd19379d6c4620269a162bfb88ff687f289",
"status": "affected",
"version": "bafbdd527d569c8200521f2f7579f65a044271be",
"versionType": "git"
},
{
"lessThan": "cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af",
"status": "affected",
"version": "bafbdd527d569c8200521f2f7579f65a044271be",
"versionType": "git"
},
{
"lessThan": "cbda1b16687580d5beee38273f6241ae3725960c",
"status": "affected",
"version": "bafbdd527d569c8200521f2f7579f65a044271be",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/phy/phy_device.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.16"
},
{
"lessThan": "4.16",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.228",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.176",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.96",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.19",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.16.*",
"status": "unaffected",
"version": "5.16.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.19.228",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.176",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.96",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.19",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.16.5",
"versionStartIncluding": "4.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.17",
"versionStartIncluding": "4.16",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphylib: fix potential use-after-free\n\nCommit bafbdd527d56 (\"phylib: Add device reset GPIO support\") added call\nto phy_device_reset(phydev) after the put_device() call in phy_detach().\n\nThe comment before the put_device() call says that the phydev might go\naway with put_device().\n\nFix potential use-after-free by calling phy_device_reset() before\nput_device()."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerable path is phy_detach(), reached via local netdev admin (ndo_stop/ifdown \u2192 phy_disconnect) or local driver teardown/phylink/SFP paths, not via remotely received packets or protocols.\nAC:L - This is a use-after-free on a code path the attacker can invoke directly; when put_device drops the final reference (the case the surrounding comment and attach refcounting were written for), phy_device_reset() reliably touches freed phydev memory with no additional chance conditions.\nPR:L - Triggering requires CAP_NET_ADMIN to bring down or otherwise detach a PHY-backed interface, which is available to an unprivileged user via user namespaces/containers that have been given such a netdev, not only full init-namespace root.\nUI:N - No separate victim action is required; the attacker who can perform the netdev/driver operation triggers the bug themselves.\nS:U - Impact stays within the local kernel/host authority; this is a standard kernel UAF privilege-escalation class issue, not a VM/sandbox/IOMMU boundary escape.\nC:H - Use-after-free of struct phy_device lets an attacker reclaim and control the object contents, enabling arbitrary kernel read primitives via the subsequent reset_gpio/reset_ctrl use.\nI:H - The same UAF enables heap spraying and corruption of the freed phy_device so that mdio_device_reset()\u0027s gpiod/reset_control calls become arbitrary write/control-flow primitives.\nA:H - Use-after-free of a kernel device object can cause kernel oops/panic even without full exploitation, so availability impact is high."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T08:52:08.868Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/67d271760b037ce0806d687ee6057edc8afd4205"
},
{
"url": "https://git.kernel.org/stable/c/f39027cbada43b33566c312e6be3db654ca3ad17"
},
{
"url": "https://git.kernel.org/stable/c/bd024e36f68174b1793906c39ca16cee0c9295c2"
},
{
"url": "https://git.kernel.org/stable/c/aefaccd19379d6c4620269a162bfb88ff687f289"
},
{
"url": "https://git.kernel.org/stable/c/cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af"
},
{
"url": "https://git.kernel.org/stable/c/cbda1b16687580d5beee38273f6241ae3725960c"
}
],
"title": "phylib: fix potential use-after-free",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2022-48754",
"datePublished": "2024-06-20T11:13:34.561Z",
"dateReserved": "2024-06-20T11:09:39.057Z",
"dateUpdated": "2026-08-05T08:52:08.868Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.