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CVE-2021-47171— net: usb: fix memory leak in smsc75xx_bind

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于 net usb中的 smsc75xx_bind 中存在内存泄漏。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.24% · P14

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux d0cad871703b898a442e4049c532ec39168e5b57< 200dbfcad8011e50c3cec269ed7b980836eeb1fa affected
d0cad871703b898a442e4049c532ec39168e5b57< 22c840596af0c09068b6cf948616e6496e59e07f affected
d0cad871703b898a442e4049c532ec39168e5b57< 9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc affected
d0cad871703b898a442e4049c532ec39168e5b57< 9e6a3eccb28779710cbbafc4f4258d92509c6d07 affected
d0cad871703b898a442e4049c532ec39168e5b57< b95fb96e6339e34694dd578fb6bde3575b01af17 affected
d0cad871703b898a442e4049c532ec39168e5b57< 635ac38b36255d3cfb8312cf7c471334f4d537e0 affected
d0cad871703b898a442e4049c532ec39168e5b57< 70c886ac93f87ae7214a0c69151a28a8075dd95b affected
d0cad871703b898a442e4049c532ec39168e5b57< 46a8b29c6306d8bbfd92b614ef65a47c900d8e70 affected
… +10 more rows
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I. Basic Information for CVE-2021-47171

Vulnerability Information
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Vulnerability Title
net: usb: fix memory leak in smsc75xx_bind
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: usb: fix memory leak in smsc75xx_bind Syzbot reported memory leak in smsc75xx_bind(). The problem was is non-freed memory in case of errors after memory allocation. backtrace: [<ffffffff84245b62>] kmalloc include/linux/slab.h:556 [inline] [<ffffffff84245b62>] kzalloc include/linux/slab.h:686 [inline] [<ffffffff84245b62>] smsc75xx_bind+0x7a/0x334 drivers/net/usb/smsc75xx.c:1460 [<ffffffff82b5b2e6>] usbnet_probe+0x3b6/0xc30 drivers/net/usb/usbnet.c:1728
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于 net usb中的 smsc75xx_bind 中存在内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux d0cad871703b898a442e4049c532ec39168e5b57 ~ 200dbfcad8011e50c3cec269ed7b980836eeb1fa -
Linux Linux 2.6.34 -

II. Public POCs for CVE-2021-47171

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III. Intelligence Information for CVE-2021-47171

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Other References for CVE-2021-47171 (6)

Same Patch Batch · Linux · 2024-03-25 · 40 CVEs total

CVE-2021-47137 9.8 CRITICAL net: lantiq: fix memory corruption in RX ring
CVE-2021-47168 9.8 CRITICAL NFS: fix an incorrect limit in filelayout_decode_layout()
CVE-2021-47162 9.8 CRITICAL tipc: skb_linearize the head skb when reassembling msgs
CVE-2021-47136 8.6 HIGH net: zero-initialize tc skb extension on allocation
CVE-2021-47160 8.1 HIGH net: dsa: mt7530: fix VLAN traffic leaks
CVE-2021-47142 7.8 HIGH drm/amdgpu: Fix a use-after-free
CVE-2021-47175 7.8 HIGH net/sched: fq_pie: fix OOB access in the traffic path
CVE-2021-47163 7.8 HIGH tipc: wait and exit until all work queues are done
CVE-2021-47159 7.8 HIGH net: dsa: fix a crash if ->get_sset_count() fails
CVE-2021-47158 7.8 HIGH net: dsa: sja1105: add error handling in sja1105_setup()
CVE-2021-47153 7.8 HIGH i2c: i801: Don't generate an interrupt on bus reset
CVE-2021-47152 7.8 HIGH mptcp: fix data stream corruption
CVE-2021-47148 7.8 HIGH octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()
CVE-2021-47179 7.5 HIGH NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
CVE-2021-47178 7.5 HIGH scsi: target: core: Avoid smp_processor_id() in preemptible code
CVE-2021-47166 NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
CVE-2021-47180 NFC: nci: fix memory leak in nci_allocate_device
CVE-2021-47177 iommu/vt-d: Fix sysfs leak in alloc_iommu()
CVE-2021-47176 s390/dasd: add missing discipline function
CVE-2021-47141 gve: Add NULL pointer checks when freeing irqs.

Showing top 20 of 40 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47171

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