CVE-2025-68287 (GCVE-0-2025-68287)
Vulnerability from cvelistv5
Published
2025-12-16 15:06
Modified
2025-12-16 15:06
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths
This patch addresses a race condition caused by unsynchronized
execution of multiple call paths invoking `dwc3_remove_requests()`,
leading to premature freeing of USB requests and subsequent crashes.
Three distinct execution paths interact with `dwc3_remove_requests()`:
Path 1:
Triggered via `dwc3_gadget_reset_interrupt()` during USB reset
handling. The call stack includes:
- `dwc3_ep0_reset_state()`
- `dwc3_ep0_stall_and_restart()`
- `dwc3_ep0_out_start()`
- `dwc3_remove_requests()`
- `dwc3_gadget_del_and_unmap_request()`
Path 2:
Also initiated from `dwc3_gadget_reset_interrupt()`, but through
`dwc3_stop_active_transfers()`. The call stack includes:
- `dwc3_stop_active_transfers()`
- `dwc3_remove_requests()`
- `dwc3_gadget_del_and_unmap_request()`
Path 3:
Occurs independently during `adb root` execution, which triggers
USB function unbind and bind operations. The sequence includes:
- `gserial_disconnect()`
- `usb_ep_disable()`
- `dwc3_gadget_ep_disable()`
- `dwc3_remove_requests()` with `-ESHUTDOWN` status
Path 3 operates asynchronously and lacks synchronization with Paths
1 and 2. When Path 3 completes, it disables endpoints and frees 'out'
requests. If Paths 1 or 2 are still processing these requests,
accessing freed memory leads to a crash due to use-after-free conditions.
To fix this added check for request completion and skip processing
if already completed and added the request status for ep0 while queue.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 72246da40f3719af3bfd104a2365b32537c27d83 Version: 72246da40f3719af3bfd104a2365b32537c27d83 Version: 72246da40f3719af3bfd104a2365b32537c27d83 Version: 72246da40f3719af3bfd104a2365b32537c27d83 Version: 72246da40f3719af3bfd104a2365b32537c27d83 Version: 72246da40f3719af3bfd104a2365b32537c27d83 Version: 72246da40f3719af3bfd104a2365b32537c27d83 |
||
{
"containers": {
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"product": "Linux",
"programFiles": [
"drivers/usb/dwc3/ep0.c",
"drivers/usb/dwc3/gadget.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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{
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"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "0",
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{
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"status": "unaffected",
"version": "5.15.197",
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},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.119",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.61",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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"negate": false,
"operator": "OR"
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths\n\nThis patch addresses a race condition caused by unsynchronized\nexecution of multiple call paths invoking `dwc3_remove_requests()`,\nleading to premature freeing of USB requests and subsequent crashes.\n\nThree distinct execution paths interact with `dwc3_remove_requests()`:\nPath 1:\nTriggered via `dwc3_gadget_reset_interrupt()` during USB reset\nhandling. The call stack includes:\n- `dwc3_ep0_reset_state()`\n- `dwc3_ep0_stall_and_restart()`\n- `dwc3_ep0_out_start()`\n- `dwc3_remove_requests()`\n- `dwc3_gadget_del_and_unmap_request()`\n\nPath 2:\nAlso initiated from `dwc3_gadget_reset_interrupt()`, but through\n`dwc3_stop_active_transfers()`. The call stack includes:\n- `dwc3_stop_active_transfers()`\n- `dwc3_remove_requests()`\n- `dwc3_gadget_del_and_unmap_request()`\n\nPath 3:\nOccurs independently during `adb root` execution, which triggers\nUSB function unbind and bind operations. The sequence includes:\n- `gserial_disconnect()`\n- `usb_ep_disable()`\n- `dwc3_gadget_ep_disable()`\n- `dwc3_remove_requests()` with `-ESHUTDOWN` status\n\nPath 3 operates asynchronously and lacks synchronization with Paths\n1 and 2. When Path 3 completes, it disables endpoints and frees \u0027out\u0027\nrequests. If Paths 1 or 2 are still processing these requests,\naccessing freed memory leads to a crash due to use-after-free conditions.\n\nTo fix this added check for request completion and skip processing\nif already completed and added the request status for ep0 while queue."
}
],
"providerMetadata": {
"dateUpdated": "2025-12-16T15:06:08.711Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/467add9db13219101f14b6cc5477998b4aaa5fe2"
},
{
"url": "https://git.kernel.org/stable/c/67192e8cb7f941b5bba91e4bb290683576ce1607"
},
{
"url": "https://git.kernel.org/stable/c/47de14d741cc4057046c9e2f33df1f7828254e6c"
},
{
"url": "https://git.kernel.org/stable/c/afc0e34f161ce61ad351303c46eb57bd44b8b090"
},
{
"url": "https://git.kernel.org/stable/c/7cfb62888eba292fa35cd9ddbd28ce595f60e139"
},
{
"url": "https://git.kernel.org/stable/c/fa5eaf701e576880070b60922200557ae4aa54e1"
},
{
"url": "https://git.kernel.org/stable/c/e4037689a366743c4233966f0e74bc455820d316"
}
],
"title": "usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2025-68287",
"datePublished": "2025-12-16T15:06:08.711Z",
"dateReserved": "2025-12-16T14:48:05.292Z",
"dateUpdated": "2025-12-16T15:06:08.711Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-68287\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-16T16:16:07.510\",\"lastModified\":\"2025-12-18T15:08:06.237\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nusb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths\\n\\nThis patch addresses a race condition caused by unsynchronized\\nexecution of multiple call paths invoking `dwc3_remove_requests()`,\\nleading to premature freeing of USB requests and subsequent crashes.\\n\\nThree distinct execution paths interact with `dwc3_remove_requests()`:\\nPath 1:\\nTriggered via `dwc3_gadget_reset_interrupt()` during USB reset\\nhandling. The call stack includes:\\n- `dwc3_ep0_reset_state()`\\n- `dwc3_ep0_stall_and_restart()`\\n- `dwc3_ep0_out_start()`\\n- `dwc3_remove_requests()`\\n- `dwc3_gadget_del_and_unmap_request()`\\n\\nPath 2:\\nAlso initiated from `dwc3_gadget_reset_interrupt()`, but through\\n`dwc3_stop_active_transfers()`. The call stack includes:\\n- `dwc3_stop_active_transfers()`\\n- `dwc3_remove_requests()`\\n- `dwc3_gadget_del_and_unmap_request()`\\n\\nPath 3:\\nOccurs independently during `adb root` execution, which triggers\\nUSB function unbind and bind operations. The sequence includes:\\n- `gserial_disconnect()`\\n- `usb_ep_disable()`\\n- `dwc3_gadget_ep_disable()`\\n- `dwc3_remove_requests()` with `-ESHUTDOWN` status\\n\\nPath 3 operates asynchronously and lacks synchronization with Paths\\n1 and 2. When Path 3 completes, it disables endpoints and frees \u0027out\u0027\\nrequests. If Paths 1 or 2 are still processing these requests,\\naccessing freed memory leads to a crash due to use-after-free conditions.\\n\\nTo fix this added check for request completion and skip processing\\nif already completed and added the request status for ep0 while queue.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/467add9db13219101f14b6cc5477998b4aaa5fe2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/47de14d741cc4057046c9e2f33df1f7828254e6c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/67192e8cb7f941b5bba91e4bb290683576ce1607\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7cfb62888eba292fa35cd9ddbd28ce595f60e139\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/afc0e34f161ce61ad351303c46eb57bd44b8b090\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e4037689a366743c4233966f0e74bc455820d316\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fa5eaf701e576880070b60922200557ae4aa54e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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