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CVE-2025-21743— usbnet: ipheth: fix possible overflow in DPE length check

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ipheth驱动中DPE长度检查可能存在溢出，导致越界读取。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.22% · P11

Possible ATT&CK Techniques 1 AI

T1115 · Clipboard Data

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux a2d274c62e44b1995c170595db3865c6fe701226< 18bf6f5cce3172cb303c3f0551aa9443d5ed74f8 affected
a2d274c62e44b1995c170595db3865c6fe701226< d677e7dd59ad6837496f5a02d8e5d39824278dfd affected
a2d274c62e44b1995c170595db3865c6fe701226< d824a964185910e317287f034c0a439c08b4fe49 affected
a2d274c62e44b1995c170595db3865c6fe701226< c219427ed296f94bb4b91d08626776dc7719ee27 affected
6.5 affected
< 6.5 unaffected
6.6.78≤ 6.6.* unaffected
6.12.14≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-21743

Vulnerability Information
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Vulnerability Title
usbnet: ipheth: fix possible overflow in DPE length check
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usbnet: ipheth: fix possible overflow in DPE length check Originally, it was possible for the DPE length check to overflow if wDatagramIndex + wDatagramLength > U16_MAX. This could lead to an OoB read. Move the wDatagramIndex term to the other side of the inequality. An existing condition ensures that wDatagramIndex < urb->actual_length.
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ipheth驱动中DPE长度检查可能存在溢出，导致越界读取。
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 a2d274c62e44b1995c170595db3865c6fe701226 ~ 18bf6f5cce3172cb303c3f0551aa9443d5ed74f8 -
Linux Linux 6.5 -

II. Public POCs for CVE-2025-21743

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III. Intelligence Information for CVE-2025-21743

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Patches & Fixes for CVE-2025-21743 (4)

Same Patch Batch · Linux · 2025-02-27 · 177 CVEs total

CVE-2025-21796 9.8 CRITICAL nfsd: clear acl_access/acl_default after releasing them
CVE-2025-21805 9.8 CRITICAL RDMA/rtrs: Add missing deinit() call
CVE-2025-21707 9.8 CRITICAL mptcp: consolidate suboption status
CVE-2025-21748 9.8 CRITICAL ksmbd: fix integer overflows on 32 bit systems
CVE-2024-58006 9.6 CRITICAL PCI: dwc: ep: Prevent changing BAR size/flags in pci_epc_set_bar()
CVE-2025-21735 8.8 HIGH NFC: nci: Add bounds checking in nci_hci_create_pipe()
CVE-2024-57999 8.8 HIGH powerpc/pseries/iommu: IOMMU incorrectly marks MMIO range in DDW
CVE-2024-57997 8.8 HIGH wifi: wcn36xx: fix channel survey memory allocation size
CVE-2024-57995 8.8 HIGH wifi: ath12k: fix read pointer after free in ath12k_mac_assign_vif_to_vdev()
CVE-2025-21710 8.2 HIGH tcp: correct handling of extreme memory squeeze
CVE-2024-57973 8.1 HIGH rdma/cxgb4: Prevent potential integer overflow on 32bit
CVE-2025-21760 8.1 HIGH ndisc: extend RCU protection in ndisc_send_skb()
CVE-2025-21766 8.1 HIGH ipv4: use RCU protection in __ip_rt_update_pmtu()
CVE-2025-21765 8.1 HIGH ipv6: use RCU protection in ip6_default_advmss()
CVE-2025-21762 8.1 HIGH arp: use RCU protection in arp_xmit()
CVE-2025-21730 7.8 HIGH wifi: rtw89: avoid to init mgnt_entry list twice when WoWLAN failed
CVE-2025-21729 7.8 HIGH wifi: rtw89: fix race between cancel_hw_scan and hw_scan completion
CVE-2025-21772 7.8 HIGH partitions: mac: fix handling of bogus partition table
CVE-2024-52560 7.8 HIGH fs/ntfs3: Mark inode as bad as soon as error detected in mi_enum_attr()
CVE-2024-58002 7.8 HIGH media: uvcvideo: Remove dangling pointers

Showing top 20 of 177 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21743

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