Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-47164— net/mlx5e: Fix null deref accessing lag dev

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 mlx5e 中存在空指针引用问题。

AI Predicted 4.4 Difficulty: Moderate EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 7e51891a237f9ea319f53f9beb83afb0077d88e6< 2e4b0b95a489259f9d35a3db17023061f8f3d587 affected
7e51891a237f9ea319f53f9beb83afb0077d88e6< bdfd3593a8248eea6ecfcbf7b47b56b86515672d affected
7e51891a237f9ea319f53f9beb83afb0077d88e6< 83026d83186bc48bb41ee4872f339b83f31dfc55 affected
5.8 affected
< 5.8 unaffected
5.10.42≤ 5.10.* unaffected
5.12.9≤ 5.12.* unaffected
5.13≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-47164

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
net/mlx5e: Fix null deref accessing lag dev
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix null deref accessing lag dev It could be the lag dev is null so stop processing the event. In bond_enslave() the active/backup slave being set before setting the upper dev so first event is without an upper dev. After setting the upper dev with bond_master_upper_dev_link() there is a second event and in that event we have an upper dev.
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 mlx5e 中存在空指针引用问题。
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 7e51891a237f9ea319f53f9beb83afb0077d88e6 ~ 2e4b0b95a489259f9d35a3db17023061f8f3d587 -
Linux Linux 5.8 -

II. Public POCs for CVE-2021-47164

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-47164

请登录查看更多情报信息。

Other References for CVE-2021-47164 (3)

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-2021-47167 NFS: Fix an Oopsable condition in __nfs_pageio_add_request()
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-2021-47164

No comments yet

Leave a comment