usb: musb: Fix musb_gadget.c rxstate overflow bug
Priority LOW 22Published · Updated
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
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);
Why it matters now
EPSS 0.00233 14th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 4.9.331, 4.14.296, 4.19.262 +6
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.3 and later | 4.9.331, 4.14.296, 4.19.262, 5.4.220, 5.10.150, 5.15.75, 5.19.17, 6.0.3, 6.1 | Patch available | CNA |
- Linux VendorLinux Affected 4.3 and later Fixed in 4.9.331, 4.14.296, 4.19.262, 5.4.220, 5.10.150, 5.15.75, 5.19.17, 6.0.3, 6.1 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.9.331, 4.14.296, 4.19.262, 5.4.220, 5.10.150, 5.15.75, 5.19.17, 6.0.3, 6.1
Vendor assessments
Red Hat
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2022-50876
- 2026-10-03 Alias added: GHSA-6h2f-jvv5-3x53
References
Other 9
- https://git.kernel.org/stable/c/826f84ab04a5cafe484ea9c2c85a3930068e5cb7
- https://git.kernel.org/stable/c/a1008c8b9f357691ce6a8fdb8f157aecb2d79167
- https://git.kernel.org/stable/c/7c80f3a918ba9aa26fb699ee887064ec3af0396a
- https://git.kernel.org/stable/c/d6afcab1b48f4051211c50145b9e91be3b1b42c9
- https://git.kernel.org/stable/c/acf0006f2b2b2ca672988875fd154429aafb2a9b
- https://git.kernel.org/stable/c/3c84c7f592c4ba38f54ddaddd0115acc443025db
- https://git.kernel.org/stable/c/a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96
- https://git.kernel.org/stable/c/523313881f0aa5cbbdb548ce575b6e58b202bd76
- https://git.kernel.org/stable/c/eea4c860c3b366369eff0489d94ee4f0571d467d
More Linux vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2022-50876 · CVE Program
- CVE-2022-50876 · NVD
- FIRST EPSS
- GHSA-6h2f-jvv5-3x53 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-50876 · Red Hat security data · CC BY 4.0
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