In the Linux kernel, the following vulnerability has been resolved: net:
mdiobus: Fix memory leak in __mdiobus_register Once device_register()
failed, we should call put_device() to decrement reference count for
cleanup. Or it will cause memory leak. BUG: memory leak unreferenced object
0xffff888114032e00 (size 256): comm “kworker/1:3”, pid 2960, jiffies
4294943572 (age 15.920s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00
08 2e 03 14 81 88 ff ff … 08 2e 03 14 81 88 ff ff 90 76 65
82 ff ff ff ff …ve… backtrace: [<ffffffff8265cfab>] kmalloc
include/linux/slab.h:591 [inline] [<ffffffff8265cfab>] kzalloc
include/linux/slab.h:721 [inline] [<ffffffff8265cfab>] device_private_init
drivers/base/core.c:3203 [inline] [<ffffffff8265cfab>]
device_add+0x89b/0xdf0 drivers/base/core.c:3253 [<ffffffff828dd643>]
__mdiobus_register+0xc3/0x450 drivers/net/phy/mdio_bus.c:537
[<ffffffff828cb835>] __devm_mdiobus_register+0x75/0xf0
drivers/net/phy/mdio_devres.c:87 [<ffffffff82b92a00>] ax88772_init_mdio
drivers/net/usb/asix_devices.c:676 [inline] [<ffffffff82b92a00>]
ax88772_bind+0x330/0x480 drivers/net/usb/asix_devices.c:786
[<ffffffff82baa33f>] usbnet_probe+0x3ff/0xdf0 drivers/net/usb/usbnet.c:1745
[<ffffffff82c36e17>] usb_probe_interface+0x177/0x370
drivers/usb/core/driver.c:396 [<ffffffff82661d17>] call_driver_probe
drivers/base/dd.c:517 [inline] [<ffffffff82661d17>]
really_probe.part.0+0xe7/0x380 drivers/base/dd.c:596 [<ffffffff826620bc>]
really_probe drivers/base/dd.c:558 [inline] [<ffffffff826620bc>]
__driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751
[<ffffffff826621ba>] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781
[<ffffffff82662a26>] __device_attach_driver+0xf6/0x140
drivers/base/dd.c:898 [<ffffffff8265eca7>] bus_for_each_drv+0xb7/0x100
drivers/base/bus.c:427 [<ffffffff826625a2>] __device_attach+0x122/0x260
drivers/base/dd.c:969 [<ffffffff82660916>] bus_probe_device+0xc6/0xe0
drivers/base/bus.c:487 [<ffffffff8265cd0b>] device_add+0x5fb/0xdf0
drivers/base/core.c:3359 [<ffffffff82c343b9>]
usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2170
[<ffffffff82c4473c>] usb_generic_driver_probe+0x8c/0xc0
drivers/usb/core/generic.c:238 BUG: memory leak unreferenced object
0xffff888116f06900 (size 32): comm “kworker/0:2”, pid 2670, jiffies
4294944448 (age 7.160s) hex dump (first 32 bytes): 75 73 62 2d 30 30 31 3a
30 30 33 00 00 00 00 00 usb-001:003… 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 … backtrace: [<ffffffff81484516>]
kstrdup+0x36/0x70 mm/util.c:60 [<ffffffff814845a3>] kstrdup_const+0x53/0x80
mm/util.c:83 [<ffffffff82296ba2>] kvasprintf_const+0xc2/0x110
lib/kasprintf.c:48 [<ffffffff82358d4b>] kobject_set_name_vargs+0x3b/0xe0
lib/kobject.c:289 [<ffffffff826575f3>] dev_set_name+0x63/0x90
drivers/base/core.c:3147 [<ffffffff828dd63b>] __mdiobus_register+0xbb/0x450
drivers/net/phy/mdio_bus.c:535 [<ffffffff828cb835>]
__devm_mdiobus_register+0x75/0xf0 drivers/net/phy/mdio_devres.c:87
[<ffffffff82b92a00>] ax88772_init_mdio drivers/net/usb/asix_devices.c:676
[inline] [<ffffffff82b92a00>] ax88772_bind+0x330/0x480
drivers/net/usb/asix_devices.c:786 [<ffffffff82baa33f>]
usbnet_probe+0x3ff/0xdf0 drivers/net/usb/usbnet.c:1745 [<ffffffff82c36e17>]
usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
[<ffffffff82661d17>] call_driver_probe drivers/base/dd.c:517 [inline]
[<ffffffff82661d17>] really_probe.part.0+0xe7/0x380 drivers/base/dd.c:596
[<ffffffff826620bc>] really_probe drivers/base/dd.c:558 [inline]
[<ffffffff826620bc>] __driver_probe_device+0x10c/0x1e0
drivers/base/dd.c:751 [<ffffffff826621ba>] driver_probe_device+0x2a/0x120
drivers/base/dd.c:781 [<ffffffff82662a26>]
__device_attach_driver+0xf6/0x140 drivers/base/dd.c:898
[<ffffffff8265eca7>] bus_for_each —truncated—
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
git.kernel.org/linus/ab609f25d19858513919369ff3d9a63c02cd9e2e (5.15-rc4)
git.kernel.org/stable/c/0c4e87ba11eb331dca2315d484d08441b8c13193
git.kernel.org/stable/c/2bc10dca9432fadb09e45127e258fc7127fd346d
git.kernel.org/stable/c/3a0dc2e35a5d6546b1db87fe985582dadc64fe7b
git.kernel.org/stable/c/4ec0f9abc512cc02fb04daa89ccf6697e80ab417
git.kernel.org/stable/c/6a18d155d5b35ad50c8fac2be091212487ae58ec
git.kernel.org/stable/c/8121d0d4fd108280f5cd7b7fe8c6592adaa37be9
git.kernel.org/stable/c/8ba94a7f7b9fc2a2b808ccceb99b77135deae21a
git.kernel.org/stable/c/a9831afa2dc8a18205403907c41aa4e0950ac611
git.kernel.org/stable/c/ab609f25d19858513919369ff3d9a63c02cd9e2e
git.kernel.org/stable/c/b0feaa8376f52357bf2fd020d0c471713a859728
git.kernel.org/stable/c/b89f4537d7fdbd0bafb6d8a66a484e0bc99871a4
git.kernel.org/stable/c/bc5f2f3431ced08300e4cb3aff35f1da14c26433
git.kernel.org/stable/c/c828115a14eacbf42042770fd68543f134e89efa
git.kernel.org/stable/c/fd2400dd4f1b8bd7a309b1b424d9e0d188151b01
git.kernel.org/stable/c/fdbffd95c4ce94d2197c504008eaac46b16bc5a4
launchpad.net/bugs/cve/CVE-2021-47472
nvd.nist.gov/vuln/detail/CVE-2021-47472
security-tracker.debian.org/tracker/CVE-2021-47472
www.cve.org/CVERecord?id=CVE-2021-47472