CVE-2021-47173
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
misc/uss720: fix memory leak in uss720_probe
In the Linux kernel, the following vulnerability has been resolved: misc/uss720: fix memory leak in uss720_probe uss720_probe forgets to decrease the refcount of usbdev in uss720_probe. Fix this by decreasing the refcount of usbdev by usb_put_dev. BUG: memory leak unreferenced object 0xffff888101113800 (size 2048): comm "kworker/0:1", pid 7, jiffies 4294956777 (age 28.870s) hex dump (first 32 bytes): ff ff ff ff 31 00 00 00 00 00 00 00 00 00 00 00 ....1........... 00 00 00 00 00 00 00 00 00 00 00 00 03 00 00 00 ................ backtrace: [<ffffffff82b8e822>] kmalloc include/linux/slab.h:554 [inline] [<ffffffff82b8e822>] kzalloc include/linux/slab.h:684 [inline] [<ffffffff82b8e822>] usb_alloc_dev+0x32/0x450 drivers/usb/core/usb.c:582 [<ffffffff82b98441>] hub_port_connect drivers/usb/core/hub.c:5129 [inline] [<ffffffff82b98441>] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] [<ffffffff82b98441>] port_event drivers/usb/core/hub.c:5509 [inline] [<ffffffff82b98441>] hub_event+0x1171/0x20c0 drivers/usb/core/hub.c:5591 [<ffffffff81259229>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2275 [<ffffffff81259b19>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2421 [<ffffffff81261228>] kthread+0x178/0x1b0 kernel/kthread.c:292 [<ffffffff8100227f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0f36163d3abefbda1b21a330b3fdf3c2dc076d94 | affected | git | 5f46b2410db2c8f26b8bb91b40deebf4ec184391 | Unavailable | None listed |
| 0f36163d3abefbda1b21a330b3fdf3c2dc076d94 | affected | git | 7889c70e6173ef358f3cd7578db127a489035a42 | Unavailable | None listed |
| 0f36163d3abefbda1b21a330b3fdf3c2dc076d94 | affected | git | bcb30cc8f8befcbdbcf7a016e4dfd4747c54a364 | Unavailable | None listed |
| 0f36163d3abefbda1b21a330b3fdf3c2dc076d94 | affected | git | 386918878ce4cd676e4607233866e03c9399a46a | Unavailable | None listed |
| 0f36163d3abefbda1b21a330b3fdf3c2dc076d94 | affected | git | 36b5ff1db1a4ef4fdbc2bae364344279f033ad88 | Unavailable | None listed |
| 0f36163d3abefbda1b21a330b3fdf3c2dc076d94 | affected | git | 5394ae9d8c7961dd93807fdf1b12a1dde96b0a55 | Unavailable | None listed |
| 0f36163d3abefbda1b21a330b3fdf3c2dc076d94 | affected | git | a3c3face38cb49932c62adcc1289914f1c742096 | Unavailable | None listed |
| 0f36163d3abefbda1b21a330b3fdf3c2dc076d94 | affected | git | dcb4b8ad6a448532d8b681b5d1a7036210b622de | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.14 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.14 | Unavailable | None listed |
| 4.4.271 | unaffected | semver | Unavailable | 4.4.* | None listed |
| 4.9.271 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.235 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.193 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.124 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.42 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.12.9 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |