CVE-2021-47180

NFC: nci: fix memory leak in nci_allocate_device

MEDIUM

5.5

CVSS Score

Published: March 25, 2024 at 09:16 AM UTC

Updated: June 17, 2026 at 04:16 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: NFC: nci: fix memory leak in nci_allocate_device nfcmrvl_disconnect fails to free the hci_dev field in struct nci_dev. Fix this by freeing hci_dev in nci_free_device. BUG: memory leak unreferenced object 0xffff888111ea6800 (size 1024): comm "kworker/1:0", pid 19, jiffies 4294942308 (age 13.580s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 60 fd 0c 81 88 ff ff .........`...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000004bc25d43>] kmalloc include/linux/slab.h:552 [inline] [<000000004bc25d43>] kzalloc include/linux/slab.h:682 [inline] [<000000004bc25d43>] nci_hci_allocate+0x21/0xd0 net/nfc/nci/hci.c:784 [<00000000c59cff92>] nci_allocate_device net/nfc/nci/core.c:1170 [inline] [<00000000c59cff92>] nci_allocate_device+0x10b/0x160 net/nfc/nci/core.c:1132 [<00000000006e0a8e>] nfcmrvl_nci_register_dev+0x10a/0x1c0 drivers/nfc/nfcmrvl/main.c:153 [<000000004da1b57e>] nfcmrvl_probe+0x223/0x290 drivers/nfc/nfcmrvl/usb.c:345 [<00000000d506aed9>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<00000000bc632c92>] really_probe+0x159/0x4a0 drivers/base/dd.c:554 [<00000000f5009125>] driver_probe_device+0x84/0x100 drivers/base/dd.c:740 [<000000000ce658ca>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:846 [<000000007067d05f>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<00000000f8e13372>] __device_attach+0x122/0x250 drivers/base/dd.c:914 [<000000009cf68860>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<00000000359c965a>] device_add+0x5be/0xc30 drivers/base/core.c:3109 [<00000000086e4bd3>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164 [<00000000ca036872>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<00000000d40d36f6>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<00000000bc632c92>] really_probe+0x159/0x4a0 drivers/base/dd.c:554

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.0 ≤ v < 4.14.2354.0 ≤ v < 4.19.1934.0 ≤ v < 4.4.2714.0 ≤ v < 4.9.2714.0 ≤ v < 5.10.414.0 ≤ v < 5.12.84.0 ≤ v < 5.134.0 ≤ v < 5.4.1234.10 ≤ v < 4.14.2354.15 ≤ v < 4.19.1934.20 ≤ v < 5.4.1234.5 ≤ v < 4.9.2715.11 ≤ v < 5.12.85.5 ≤ v < 5.10.4111f54f228643d0248ec00ce8c9fb8d872f87e7b85.13 rc1 5.13 rc2 5.13 rc3

Vendor states this is fixed in 0365701bc44e078682ee1224866a71897495c7ef (fixed)

Vendor states this is fixed in 2c2fb2df46ea866b49fea5ec7112ec3cd4896c74 (fixed)

Vendor states this is fixed in 448a1cb12977f52142e6feb12022c59662d88dc1 (fixed)

Vendor states this is fixed in 4a621621c7af3cec21c47c349b30cd9c3cea11c8 (fixed)

Vendor states this is fixed in 65234f50a90b64b335cbb9164b8a98c2a0d031dd (fixed)

Vendor states this is fixed in af2a4426baf71163c0c354580ae98c7888a9aba7 (fixed)

Vendor states this is fixed in b34cb7ac32cc8e5471dc773180ea9ae676b1a745 (fixed)

Vendor states this is fixed in e0652f8bb44d6294eeeac06d703185357f25d50b (fixed)

Vendor states this is fixed in 4.0 (unaffected)

Vendor states this is fixed in 4.14.235 (unaffected)

Vendor states this is fixed in 4.19.193 (unaffected)

Vendor states this is fixed in 4.4.271 (unaffected)