CVE-2023-53261 (GCVE-0-2023-53261)
Vulnerability from cvelistv5 – Published: 2025-09-15 14:46 – Updated: 2026-10-30 12:17
VLAI
EPSS
VEX
Title
coresight: Fix memory leak in acpi_buffer->pointer
Summary
In the Linux kernel, the following vulnerability has been resolved:
coresight: Fix memory leak in acpi_buffer->pointer
There are memory leaks reported by kmemleak:
...
unreferenced object 0xffff00213c141000 (size 1024):
comm "systemd-udevd", pid 2123, jiffies 4294909467 (age 6062.160s)
hex dump (first 32 bytes):
04 00 00 00 02 00 00 00 18 10 14 3c 21 00 ff ff ...........<!...
00 00 00 00 00 00 00 00 03 00 00 00 10 00 00 00 ................
backtrace:
[<000000004b7c9001>] __kmem_cache_alloc_node+0x2f8/0x348
[<00000000b0fc7ceb>] __kmalloc+0x58/0x108
[<0000000064ff4695>] acpi_os_allocate+0x2c/0x68
[<000000007d57d116>] acpi_ut_initialize_buffer+0x54/0xe0
[<0000000024583908>] acpi_evaluate_object+0x388/0x438
[<0000000017b2e72b>] acpi_evaluate_object_typed+0xe8/0x240
[<000000005df0eac2>] coresight_get_platform_data+0x1b4/0x988 [coresight]
...
The ACPI buffer memory (buf.pointer) should be freed. But the buffer
is also used after returning from acpi_get_dsd_graph().
Move the temporary variables buf to acpi_coresight_parse_graph(),
and free it before the function return to prevent memory leak.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 18:02 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
76ffa5ab5b79c250b9744b7f8bdd835db426a1ae , < 10bbb7efcad40a06d7acfc0a14af21c19b496eff
(git)
Affected: 76ffa5ab5b79c250b9744b7f8bdd835db426a1ae , < d1b60e7c9fee34eaedf1fc4e0471f75b33f83a4a (git) Affected: 76ffa5ab5b79c250b9744b7f8bdd835db426a1ae , < 1a9e02673e2550f5612099e64e8761f0c8fc0f50 (git) |
guessed | |
| Linux | Linux |
Affected:
5.3
Unaffected: 0 , < 5.3 (semver) Unaffected: 6.1.191 , ≤ 6.1.* (semver) Unaffected: 6.5.3 , ≤ 6.5.* (semver) Unaffected: 6.6 , ≤ * (original_commit_for_fix) |
guessed |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: Fix memory leak in acpi_buffer-\u003epointer\n\nThere are memory leaks reported by kmemleak:\n...\nunreferenced object 0xffff00213c141000 (size 1024):\n comm \"systemd-udevd\", pid 2123, jiffies 4294909467 (age 6062.160s)\n hex dump (first 32 bytes):\n 04 00 00 00 02 00 00 00 18 10 14 3c 21 00 ff ff ...........\u003c!...\n 00 00 00 00 00 00 00 00 03 00 00 00 10 00 00 00 ................\n backtrace:\n [\u003c000000004b7c9001\u003e] __kmem_cache_alloc_node+0x2f8/0x348\n [\u003c00000000b0fc7ceb\u003e] __kmalloc+0x58/0x108\n [\u003c0000000064ff4695\u003e] acpi_os_allocate+0x2c/0x68\n [\u003c000000007d57d116\u003e] acpi_ut_initialize_buffer+0x54/0xe0\n [\u003c0000000024583908\u003e] acpi_evaluate_object+0x388/0x438\n [\u003c0000000017b2e72b\u003e] acpi_evaluate_object_typed+0xe8/0x240\n [\u003c000000005df0eac2\u003e] coresight_get_platform_data+0x1b4/0x988 [coresight]\n...\n\nThe ACPI buffer memory (buf.pointer) should be freed. But the buffer\nis also used after returning from acpi_get_dsd_graph().\nMove the temporary variables buf to acpi_coresight_parse_graph(),\nand free it before the function return to prevent memory leak."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-30T12:17:28.351Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/10bbb7efcad40a06d7acfc0a14af21c19b496eff"
},
{
"url": "https://git.kernel.org/stable/c/d1b60e7c9fee34eaedf1fc4e0471f75b33f83a4a"
},
{
"url": "https://git.kernel.org/stable/c/1a9e02673e2550f5612099e64e8761f0c8fc0f50"
}
],
"title": "coresight: Fix memory leak in acpi_buffer-\u003epointer",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-53261",
"datePublished": "2025-09-15T14:46:33.065Z",
"dateReserved": "2025-09-15T14:19:21.850Z",
"dateUpdated": "2026-10-30T12:17:28.351Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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
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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.