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CVE-2022-50876

UnknownEPSS 0.20%

Last modified

CVE-2022-50876 is a vulnerability of currently unknown severity. 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);. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

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);

Metrics

EPSS Probability
0.20%

9.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 03840fad004ce8a56bc8b3bb60a2df10f6f9481e, < 826f84ab04a5cafe484ea9c2c85a3930068e5cb7; >= 03840fad004ce8a56bc8b3bb60a2df10f6f9481e, < a1008c8b9f357691ce6a8fdb8f157aecb2d79167; >= 03840fad004ce8a56bc8b3bb60a2df10f6f9481e, < 7c80f3a918ba9aa26fb699ee887064ec3af0396a; >= 03840fad004ce8a56bc8b3bb60a2df10f6f9481e, < d6afcab1b48f4051211c50145b9e91be3b1b42c9; >= 03840fad004ce8a56bc8b3bb60a2df10f6f9481e, < acf0006f2b2b2ca672988875fd154429aafb2a9b; >= 03840fad004ce8a56bc8b3bb60a2df10f6f9481e, < 3c84c7f592c4ba38f54ddaddd0115acc443025db; >= 03840fad004ce8a56bc8b3bb60a2df10f6f9481e, < a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96; >= 03840fad004ce8a56bc8b3bb60a2df10f6f9481e, < 523313881f0aa5cbbdb548ce575b6e58b202bd76; >= 03840fad004ce8a56bc8b3bb60a2df10f6f9481e, < eea4c860c3b366369eff0489d94ee4f0571d467d
LinuxLinux4.3

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2022-50876?
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);
How severe is CVE-2022-50876?
Severity scoring for CVE-2022-50876 is pending analysis. The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.
How do I fix CVE-2022-50876?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST