CVE-2023-53561
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: net: wwan: iosm: fix NULL pointer dereference when removing device In suspend and resume cycle, the removal and rescan of device ends up in NULL pointer dereference. During driver initialization, if the ipc_imem_wwan_channel_init() fails to get the valid device capabilities it returns an error and further no resource (wwan struct) will be allocated. Now in this situation if driver removal procedure is initiated it would result in NULL pointer exception since unallocated wwan struct is dereferenced inside ipc_wwan_deinit(). ipc_imem_run_state_worker() to handle the called functions return value and to release the resource in failure case. It also reports the link down event in failure cases. The user space application can handle this event to do a device reset for restoring the device communication.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-10-04 16:15:51.530000
Last modified
2026-11-05 21:17:25.897000
View original CVE JSON
{
"id": "CVE-2023-53561",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-10-04T16:15:51.530",
"lastModified": "2026-11-05T21:17:25.897",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: iosm: fix NULL pointer dereference when removing device\n\nIn suspend and resume cycle, the removal and rescan of device ends\nup in NULL pointer dereference.\n\nDuring driver initialization, if the ipc_imem_wwan_channel_init()\nfails to get the valid device capabilities it returns an error and\nfurther no resource (wwan struct) will be allocated. Now in this\nsituation if driver removal procedure is initiated it would result\nin NULL pointer exception since unallocated wwan struct is dereferenced\ninside ipc_wwan_deinit().\n\nipc_imem_run_state_worker() to handle the called functions return value\nand to release the resource in failure case. It also reports the link\ndown event in failure cases. The user space application can handle this\nevent to do a device reset for restoring the device communication."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/net/wwan/iosm/iosm_ipc_imem.c",
"drivers/net/wwan/iosm/iosm_ipc_imem_ops.c",
"drivers/net/wwan/iosm/iosm_ipc_imem_ops.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "3670970dd8c661c10c10c300d726f59428eaad32",
"lessThan": "ee44bacf462db3ec6e4f0dcfa7931e768670d77c",
"versionType": "git",
"status": "affected"
},
{
"version": "3670970dd8c661c10c10c300d726f59428eaad32",
"lessThan": "862c6e3e26735247d8a4df41fa2421909c3f4d63",
"versionType": "git",
"status": "affected"
},
{
"version": "3670970dd8c661c10c10c300d726f59428eaad32",
"lessThan": "60829145f1e2650b31ebe6a0ec70a9725b38fa2c",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/net/wwan/iosm/iosm_ipc_imem.c",
"drivers/net/wwan/iosm/iosm_ipc_imem_ops.c",
"drivers/net/wwan/iosm/iosm_ipc_imem_ops.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.14",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.14",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.30",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.3.4",
"lessThanOrEqual": "6.3.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.4",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-05T20:23:44.862391Z",
"id": "CVE-2023-53561",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-476"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.14",
"versionEndExcluding": "6.1.30",
"matchCriteriaId": "EC7379E6-D854-449E-9100-F00017B52BB5"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.2",
"versionEndExcluding": "6.3.4",
"matchCriteriaId": "26C54BF0-3EED-46D4-92A7-5F07F658B49B"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*",
"matchCriteriaId": "38BC6744-7D25-4C02-9966-B224CD071D30"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*",
"matchCriteriaId": "76061B41-CAE9-4467-BEDE-0FFC7956F2A1"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/60829145f1e2650b31ebe6a0ec70a9725b38fa2c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/862c6e3e26735247d8a4df41fa2421909c3f4d63",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/ee44bacf462db3ec6e4f0dcfa7931e768670d77c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
}
]
}