CVE-2022-50876 (GCVE-0-2022-50876)
Vulnerability from cvelistv5 – Published: 2025-12-30 12:23 – Updated: 2025-12-30 12:23
VLAI?
Title
usb: musb: Fix musb_gadget.c rxstate overflow bug
Summary
In the Linux kernel, the following vulnerability has been resolved:
usb: musb: Fix musb_gadget.c rxstate overflow bug
The usb function device call musb_gadget_queue() adds the passed
request to musb_ep::req_list,If the (request->length > musb_ep->packet_sz)
and (is_buffer_mapped(req) return false),the rxstate() will copy all data
in fifo to request->buf which may cause request->buf out of bounds.
Fix it by add the length check :
fifocnt = min_t(unsigned, request->length - request->actual, fifocnt);
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 826f84ab04a5cafe484ea9c2c85a3930068e5cb7
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a1008c8b9f357691ce6a8fdb8f157aecb2d79167 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7c80f3a918ba9aa26fb699ee887064ec3af0396a (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d6afcab1b48f4051211c50145b9e91be3b1b42c9 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < acf0006f2b2b2ca672988875fd154429aafb2a9b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3c84c7f592c4ba38f54ddaddd0115acc443025db (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 523313881f0aa5cbbdb548ce575b6e58b202bd76 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < eea4c860c3b366369eff0489d94ee4f0571d467d (git) |
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{
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"versions": [
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{
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"status": "unaffected",
"version": "4.14.296",
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},
{
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"status": "unaffected",
"version": "4.19.262",
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},
{
"lessThanOrEqual": "5.4.*",
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"version": "5.4.220",
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},
{
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{
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{
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"version": "6.0.3",
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},
{
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"version": "6.1",
"versionType": "original_commit_for_fix"
}
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}
],
"cpeApplicability": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: musb: Fix musb_gadget.c rxstate overflow bug\n\nThe usb function device call musb_gadget_queue() adds the passed\nrequest to musb_ep::req_list,If the (request-\u003elength \u003e musb_ep-\u003epacket_sz)\nand (is_buffer_mapped(req) return false),the rxstate() will copy all data\nin fifo to request-\u003ebuf which may cause request-\u003ebuf out of bounds.\n\nFix it by add the length check :\nfifocnt = min_t(unsigned, request-\u003elength - request-\u003eactual, fifocnt);"
}
],
"providerMetadata": {
"dateUpdated": "2025-12-30T12:23:16.790Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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{
"url": "https://git.kernel.org/stable/c/eea4c860c3b366369eff0489d94ee4f0571d467d"
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
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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