{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-68282", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-16T14:48:05.291Z", "datePublished": "2025-12-16T15:06:04.332Z", "dateUpdated": "2025-12-16T15:06:04.332Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-16T15:06:04.332Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: udc: fix use-after-free in usb_gadget_state_work\n\nA race condition during gadget teardown can lead to a use-after-free\nin usb_gadget_state_work(), as reported by KASAN:\n\n BUG: KASAN: invalid-access in sysfs_notify+0x2c/0xd0\n Workqueue: events usb_gadget_state_work\n\nThe fundamental race occurs because a concurrent event (e.g., an\ninterrupt) can call usb_gadget_set_state() and schedule gadget->work\nat any time during the cleanup process in usb_del_gadget().\n\nCommit 399a45e5237c (\"usb: gadget: core: flush gadget workqueue after\ndevice removal\") attempted to fix this by moving flush_work() to after\ndevice_del(). However, this does not fully solve the race, as a new\nwork item can still be scheduled *after* flush_work() completes but\nbefore the gadget's memory is freed, leading to the same use-after-free.\n\nThis patch fixes the race condition robustly by introducing a 'teardown'\nflag and a 'state_lock' spinlock to the usb_gadget struct. The flag is\nset during cleanup in usb_del_gadget() *before* calling flush_work() to\nprevent any new work from being scheduled once cleanup has commenced.\nThe scheduling site, usb_gadget_set_state(), now checks this flag under\nthe lock before queueing the work, thus safely closing the race window."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/udc/core.c", "include/linux/usb/gadget.h"], "versions": [{"version": "5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15", "lessThan": "c12a0c3ef815ddd67e47f9c819f9fe822fed5467", "status": "affected", "versionType": "git"}, {"version": "5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15", "lessThan": "f02a412c0a18f02f0f91b0a3d9788315a721b7fd", "status": "affected", "versionType": "git"}, {"version": "5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15", "lessThan": "10014310193cf6736c1aeb4105c5f4a0818d0c65", "status": "affected", "versionType": "git"}, {"version": "5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15", "lessThan": "3b32caa73d135eea8fb9cabb45e9fc64c5a3ecb9", "status": "affected", "versionType": "git"}, {"version": "5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15", "lessThan": "baeb66fbd4201d1c4325074e78b1f557dff89b5b", "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/udc/core.c", "include/linux/usb/gadget.h"], "versions": [{"version": "3.12", "status": "affected"}, {"version": "0", "lessThan": "3.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.159", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.119", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.61", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.11", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "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": "3.12", "versionEndExcluding": "6.1.159"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.12", "versionEndExcluding": "6.6.119"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.12", "versionEndExcluding": "6.12.61"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.12", "versionEndExcluding": "6.17.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.12", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c12a0c3ef815ddd67e47f9c819f9fe822fed5467"}, {"url": "https://git.kernel.org/stable/c/f02a412c0a18f02f0f91b0a3d9788315a721b7fd"}, {"url": "https://git.kernel.org/stable/c/10014310193cf6736c1aeb4105c5f4a0818d0c65"}, {"url": "https://git.kernel.org/stable/c/3b32caa73d135eea8fb9cabb45e9fc64c5a3ecb9"}, {"url": "https://git.kernel.org/stable/c/baeb66fbd4201d1c4325074e78b1f557dff89b5b"}], "title": "usb: gadget: udc: fix use-after-free in usb_gadget_state_work", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: udc: fix use-after-free in usb_gadget_state_work\n\nA race condition during gadget teardown can lead to a use-after-free\nin usb_gadget_state_work(), as reported by KASAN:\n\n BUG: KASAN: invalid-access in sysfs_notify+0x2c/0xd0\n Workqueue: events usb_gadget_state_work\n\nThe fundamental race occurs because a concurrent event (e.g., an\ninterrupt) can call usb_gadget_set_state() and schedule gadget->work\nat any time during the cleanup process in usb_del_gadget().\n\nCommit 399a45e5237c (\"usb: gadget: core: flush gadget workqueue after\ndevice removal\") attempted to fix this by moving flush_work() to after\ndevice_del(). However, this does not fully solve the race, as a new\nwork item can still be scheduled *after* flush_work() completes but\nbefore the gadget's memory is freed, leading to the same use-after-free.\n\nThis patch fixes the race condition robustly by introducing a 'teardown'\nflag and a 'state_lock' spinlock to the usb_gadget struct. The flag is\nset during cleanup in usb_del_gadget() *before* calling flush_work() to\nprevent any new work from being scheduled once cleanup has commenced.\nThe scheduling site, usb_gadget_set_state(), now checks this flag under\nthe lock before queueing the work, thus safely closing the race window."}], "id": "CVE-2025-68282", "lastModified": "2025-12-16T16:16:06.970", "metrics": {}, "published": "2025-12-16T16:16:06.970", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/10014310193cf6736c1aeb4105c5f4a0818d0c65"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3b32caa73d135eea8fb9cabb45e9fc64c5a3ecb9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/baeb66fbd4201d1c4325074e78b1f557dff89b5b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c12a0c3ef815ddd67e47f9c819f9fe822fed5467"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f02a412c0a18f02f0f91b0a3d9788315a721b7fd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}