{"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:<uid>: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"}}}}