{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53759", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-08T01:18:04.280Z", "datePublished": "2025-12-08T01:19:20.432Z", "dateUpdated": "2026-08-05T09:15:51.129Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:15:51.129Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: hidraw: fix data race on device refcount\n\nThe hidraw_open() function increments the hidraw device reference\ncounter. The counter has no dedicated synchronization mechanism,\nresulting in a potential data race when concurrently opening a device.\n\nThe race is a regression introduced by commit 8590222e4b02 (\"HID:\nhidraw: Replace hidraw device table mutex with a rwsem\"). While\nminors_rwsem is intended to protect the hidraw_table itself, by instead\nacquiring the lock for writing, the reference counter is also protected.\nThis is symmetrical to hidraw_release()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable code is reached by `open()`/`read()`/`poll()`/`close()` on the `/dev/hidrawN` character device, requiring local access to the system. No network or physical interaction with the bus is needed to drive the race itself.\nAC:L - The attacker controls both sides of the race — it is simply two or more threads calling `open()` on the same hidraw node in a loop, retryable indefinitely until the non-atomic `dev->open++` loses an update. The race is known to trigger accidentally during normal FIDO2 device probing (systemd issue #27947), and HID hot-unplug/Bluetooth-link-loss events needed to convert the refcount skew into a free are routine and inducible.\nPR:L - An unprivileged local user needs only read access to a hidraw node; systemd's uaccess/seat udev rules grant the logged-in user an ACL on hidraw devices for FIDO2 tokens, hardware wallets, 3D mice and game controllers (empirically confirmed: `crw-rw----+` with `user::rw-`). No capability, no root, no ioctl gate.\nUI:N - The attacker's own threads perform every step of the attack; no victim action is required. Device detach events occur spontaneously (Bluetooth link loss, dongle removal, uhid teardown) or can be caused by the attacker themselves.\nS:U - The refcount corruption and resulting use-after-free are confined to kernel memory within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The premature `kfree(struct hidraw)` leaves `list->hidraw` dangling, and `hidraw_read()` dereferences `list->hidraw->exist` and the embedded wait queue on reclaimed memory; a UAF on a small kmalloc object with attacker-sprayed contents yields an arbitrary-read primitive and kernel memory disclosure.\nI:H - `add_wait_queue()`/`remove_wait_queue()` on the freed `hidraw->wait` write list pointers into reclaimed heap memory, and a sprayed replacement object gives attacker-controlled `list_head` pointers plus a controlled `wait_queue_entry->func` call — an arbitrary write and control-flow hijack. The stale-minor path also corrupts a different, live `struct hidraw`'s refcount.\nA:H - `hidraw_release()` on the orphaned fd dereferences a NULL `hidraw_table[minor]` for a guaranteed oops, and the UAF crashes the kernel outright; additionally the refcount underflow permanently leaks hidraw minors (only 64 exist), denying hidraw registration to all future HID devices." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/hidraw.c" ], "versions": [ { "version": "8590222e4b021054a7167a4dd35b152a8ed7018e", "lessThan": "879e79c3aead41b8aa2e91164354b30bd1c4ef3b", "status": "affected", "versionType": "git" }, { "version": "8590222e4b021054a7167a4dd35b152a8ed7018e", "lessThan": "ff348eabd97577da974d3db7038857f28c61d2bd", "status": "affected", "versionType": "git" }, { "version": "8590222e4b021054a7167a4dd35b152a8ed7018e", "lessThan": "05b47034e2488c2924e5c032e20a1979d012b5b5", "status": "affected", "versionType": "git" }, { "version": "8590222e4b021054a7167a4dd35b152a8ed7018e", "lessThan": "944ee77dc6ec7b0afd8ec70ffc418b238c92f12b", "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/hid/hidraw.c" ], "versions": [ { "version": "5.17", "status": "affected" }, { "version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.37", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3.11", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.1", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5", "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": "5.17", "versionEndExcluding": "6.1.37" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.3.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.4.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/879e79c3aead41b8aa2e91164354b30bd1c4ef3b" }, { "url": "https://git.kernel.org/stable/c/ff348eabd97577da974d3db7038857f28c61d2bd" }, { "url": "https://git.kernel.org/stable/c/05b47034e2488c2924e5c032e20a1979d012b5b5" }, { "url": "https://git.kernel.org/stable/c/944ee77dc6ec7b0afd8ec70ffc418b238c92f12b" } ], "title": "HID: hidraw: fix data race on device refcount", "x_generator": { "engine": "bippy-1.2.0" } } } }