{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-56670", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T15:00:39.844Z", "datePublished": "2024-12-27T15:06:31.611Z", "dateUpdated": "2026-05-11T20:56:58.889Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:56:58.889Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: u_serial: Fix the issue that gs_start_io crashed due to accessing null pointer\n\nConsidering that in some extreme cases,\nwhen u_serial driver is accessed by multiple threads,\nThread A is executing the open operation and calling the gs_open,\nThread B is executing the disconnect operation and calling the\ngserial_disconnect function,The port->port_usb pointer will be set to NULL.\n\nE.g.\n Thread A Thread B\n gs_open() gadget_unbind_driver()\n gs_start_io() composite_disconnect()\n gs_start_rx() gserial_disconnect()\n ... ...\n spin_unlock(&port->port_lock)\n status = usb_ep_queue() spin_lock(&port->port_lock)\n spin_lock(&port->port_lock) port->port_usb = NULL\n gs_free_requests(port->port_usb->in) spin_unlock(&port->port_lock)\n Crash\n\nThis causes thread A to access a null pointer (port->port_usb is null)\nwhen calling the gs_free_requests function, causing a crash.\n\nIf port_usb is NULL, the release request will be skipped as it\nwill be done by gserial_disconnect.\n\nSo add a null pointer check to gs_start_io before attempting\nto access the value of the pointer port->port_usb.\n\nCall trace:\n gs_start_io+0x164/0x25c\n gs_open+0x108/0x13c\n tty_open+0x314/0x638\n chrdev_open+0x1b8/0x258\n do_dentry_open+0x2c4/0x700\n vfs_open+0x2c/0x3c\n path_openat+0xa64/0xc60\n do_filp_open+0xb8/0x164\n do_sys_openat2+0x84/0xf0\n __arm64_sys_openat+0x70/0x9c\n invoke_syscall+0x58/0x114\n el0_svc_common+0x80/0xe0\n do_el0_svc+0x1c/0x28\n el0_svc+0x38/0x68" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/usb/gadget/function/u_serial.c" ], "versions": [ { "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9", "lessThan": "4efdfdc32d8d6307f968cd99f1db64468471bab1", "status": "affected", "versionType": "git" }, { "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9", "lessThan": "28b3c03a6790de1f6f2683919ad657840f0f0f58", "status": "affected", "versionType": "git" }, { "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9", "lessThan": "1247e1df086aa6c17ab53cd1bedce70dd7132765", "status": "affected", "versionType": "git" }, { "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9", "lessThan": "c83213b6649d22656b3a4e92544ceeea8a2c6c07", "status": "affected", "versionType": "git" }, { "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9", "lessThan": "8ca07a3d18f39b1669927ef536e485787e856df6", "status": "affected", "versionType": "git" }, { "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9", "lessThan": "dd6b0ca6025f64ccb465a6a3460c5b0307ed9c44", "status": "affected", "versionType": "git" }, { "version": "c1dca562be8ada614ef193aa246c6f8705bcd6b9", "lessThan": "4cfbca86f6a8b801f3254e0e3c8f2b1d2d64be2b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/usb/gadget/function/u_serial.c" ], "versions": [ { "version": "2.6.27", "status": "affected" }, { "version": "0", "lessThan": "2.6.27", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.288", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.232", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.175", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.121", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.67", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.6", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "5.4.288" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "5.10.232" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "5.15.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.1.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.6.67" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.12.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4efdfdc32d8d6307f968cd99f1db64468471bab1" }, { "url": "https://git.kernel.org/stable/c/28b3c03a6790de1f6f2683919ad657840f0f0f58" }, { "url": "https://git.kernel.org/stable/c/1247e1df086aa6c17ab53cd1bedce70dd7132765" }, { "url": "https://git.kernel.org/stable/c/c83213b6649d22656b3a4e92544ceeea8a2c6c07" }, { "url": "https://git.kernel.org/stable/c/8ca07a3d18f39b1669927ef536e485787e856df6" }, { "url": "https://git.kernel.org/stable/c/dd6b0ca6025f64ccb465a6a3460c5b0307ed9c44" }, { "url": "https://git.kernel.org/stable/c/4cfbca86f6a8b801f3254e0e3c8f2b1d2d64be2b" } ], "title": "usb: gadget: u_serial: Fix the issue that gs_start_io crashed due to accessing null pointer", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-56670", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T19:59:37.791870Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:07:09.242Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:52:17.369Z" } } ] } }