CVE-2023-53446 (GCVE-0-2023-53446)
Vulnerability from cvelistv5 – Published: 2025-09-18 16:04 – Updated: 2026-05-11 19:45
VLAI
EPSS
VEX
Title
PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved:
PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free
Struct pcie_link_state->downstream is a pointer to the pci_dev of function
0. Previously we retained that pointer when removing function 0, and
subsequent ASPM policy changes dereferenced it, resulting in a
use-after-free warning from KASAN, e.g.:
# echo 1 > /sys/bus/pci/devices/0000:03:00.0/remove
# echo powersave > /sys/module/pcie_aspm/parameters/policy
BUG: KASAN: slab-use-after-free in pcie_config_aspm_link+0x42d/0x500
Call Trace:
kasan_report+0xae/0xe0
pcie_config_aspm_link+0x42d/0x500
pcie_aspm_set_policy+0x8e/0x1a0
param_attr_store+0x162/0x2c0
module_attr_store+0x3e/0x80
PCIe spec r6.0, sec 7.5.3.7, recommends that software program the same ASPM
Control value in all functions of multi-function devices.
Disable ASPM and free the pcie_link_state when any child function is
removed so we can discard the dangling pcie_link_state->downstream pointer
and maintain the same ASPM Control configuration for all functions.
[bhelgaas: commit log and comment]
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 19:19 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 666e7f9d60cee23077ea3e6331f6f8a19f7ea03f
(git)
Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 7badf4d6f49a358a01ab072bbff88d3ee886c33b (git) Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 9856c0de49052174ab474113f4ba40c02aaee086 (git) Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 7aecdd47910c51707696e8b0e045b9f88bd4230f (git) Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < d51d2eeae4ce54d542909c4d9d07bf371a78592c (git) Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 4203722d51afe3d239e03f15cc73efdf023a7103 (git) Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 456d8aa37d0f56fc9e985e812496e861dcd6f2f2 (git) |
guessed | |
| Linux | Linux |
Affected:
4.11
Unaffected: 0 , < 4.11 (semver) Unaffected: 5.4.251 , ≤ 5.4.* (semver) Unaffected: 5.10.188 , ≤ 5.10.* (semver) Unaffected: 5.15.121 , ≤ 5.15.* (semver) Unaffected: 6.1.39 , ≤ 6.1.* (semver) Unaffected: 6.3.13 , ≤ 6.3.* (semver) Unaffected: 6.4.4 , ≤ 6.4.* (semver) Unaffected: 6.5 , ≤ * (original_commit_for_fix) |
guessed |
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-29T22:23:11+00:00",
"cve": "CVE-2023-53446",
"id": "CVE-2023-53446",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:known_affected": "170",
"product_status:known_not_affected": "104",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53446.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-13T23:46:28Z",
"cve": "CVE-2023-53446",
"id": "CVE-2023-53446",
"initial_release_date": "2025-09-18T23:37:18Z",
"product_status:known_affected": "506",
"product_status:known_not_affected": "45",
"product_status:recommended": "539",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-53446",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53446.json",
"version": "58"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-53446\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T19:19:38.678315Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T19:19:33.416Z\"}}], \"cna\": {\"title\": \"PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b5a0a9b59c8185aebcd9a717e2e6258b58c72c06\", \"lessThan\": \"666e7f9d60cee23077ea3e6331f6f8a19f7ea03f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5a0a9b59c8185aebcd9a717e2e6258b58c72c06\", \"lessThan\": \"7badf4d6f49a358a01ab072bbff88d3ee886c33b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5a0a9b59c8185aebcd9a717e2e6258b58c72c06\", \"lessThan\": \"9856c0de49052174ab474113f4ba40c02aaee086\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5a0a9b59c8185aebcd9a717e2e6258b58c72c06\", \"lessThan\": \"7aecdd47910c51707696e8b0e045b9f88bd4230f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5a0a9b59c8185aebcd9a717e2e6258b58c72c06\", \"lessThan\": \"d51d2eeae4ce54d542909c4d9d07bf371a78592c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5a0a9b59c8185aebcd9a717e2e6258b58c72c06\", \"lessThan\": \"4203722d51afe3d239e03f15cc73efdf023a7103\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b5a0a9b59c8185aebcd9a717e2e6258b58c72c06\", \"lessThan\": \"456d8aa37d0f56fc9e985e812496e861dcd6f2f2\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/pci/pcie/aspm.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.251\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.188\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.121\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.39\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.3.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.3.*\"}, {\"status\": \"unaffected\", \"version\": \"6.4.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.4.*\"}, {\"status\": \"unaffected\", \"version\": \"6.5\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/pci/pcie/aspm.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/666e7f9d60cee23077ea3e6331f6f8a19f7ea03f\"}, {\"url\": \"https://git.kernel.org/stable/c/7badf4d6f49a358a01ab072bbff88d3ee886c33b\"}, {\"url\": \"https://git.kernel.org/stable/c/9856c0de49052174ab474113f4ba40c02aaee086\"}, {\"url\": \"https://git.kernel.org/stable/c/7aecdd47910c51707696e8b0e045b9f88bd4230f\"}, {\"url\": \"https://git.kernel.org/stable/c/d51d2eeae4ce54d542909c4d9d07bf371a78592c\"}, {\"url\": \"https://git.kernel.org/stable/c/4203722d51afe3d239e03f15cc73efdf023a7103\"}, {\"url\": \"https://git.kernel.org/stable/c/456d8aa37d0f56fc9e985e812496e861dcd6f2f2\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nPCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free\\n\\nStruct pcie_link_state-\u003edownstream is a pointer to the pci_dev of function\\n0. Previously we retained that pointer when removing function 0, and\\nsubsequent ASPM policy changes dereferenced it, resulting in a\\nuse-after-free warning from KASAN, e.g.:\\n\\n # echo 1 \u003e /sys/bus/pci/devices/0000:03:00.0/remove\\n # echo powersave \u003e /sys/module/pcie_aspm/parameters/policy\\n\\n BUG: KASAN: slab-use-after-free in pcie_config_aspm_link+0x42d/0x500\\n Call Trace:\\n kasan_report+0xae/0xe0\\n pcie_config_aspm_link+0x42d/0x500\\n pcie_aspm_set_policy+0x8e/0x1a0\\n param_attr_store+0x162/0x2c0\\n module_attr_store+0x3e/0x80\\n\\nPCIe spec r6.0, sec 7.5.3.7, recommends that software program the same ASPM\\nControl value in all functions of multi-function devices.\\n\\nDisable ASPM and free the pcie_link_state when any child function is\\nremoved so we can discard the dangling pcie_link_state-\u003edownstream pointer\\nand maintain the same ASPM Control configuration for all functions.\\n\\n[bhelgaas: commit log and comment]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.251\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.188\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.121\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.39\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.3.13\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.4.4\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5\", \"versionStartIncluding\": \"4.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T19:45:09.783Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-53446\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T19:45:09.783Z\", \"dateReserved\": \"2025-09-17T14:54:09.753Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-18T16:04:21.939Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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.
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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.
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