cbcvebase.
CVE-2025-21742
published 2025-02-27

CVE-2025-21742: In the Linux kernel, the following vulnerability has been resolved: usbnet: ipheth: use static NDP16 location in URB Original code allowed for the start of…

PriorityP431high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
EPSS
0.22%
12.5th percentile
In the Linux kernel, the following vulnerability has been resolved: usbnet: ipheth: use static NDP16 location in URB Original code allowed for the start of NDP16 to be anywhere within the URB based on the `wNdpIndex` value in NTH16. Only the start position of NDP16 was checked, so it was possible for even the fixed-length part of NDP16 to extend past the end of URB, leading to an out-of-bounds read. On iOS devices, the NDP16 header always directly follows NTH16. Rely on and check for this specific format. This, along with NCM-specific minimal URB length check that already exists, will ensure that the fixed-length part of NDP16 plus a set amount of DPEs fit within the URB. Note that this commit alone does not fully address the OoB read. The limit on the amount of DPEs needs to be enforced separately.

Affected

14 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.12.15-1 (forky)linux 6.12.15-1 (forky)
linuxlinux
linuxlinux>= a2d274c62e44b1995c170595db3865c6fe701226 < 8fb062178e1ce180e2cfdc9abc83a1b9fea381ca8fb062178e1ce180e2cfdc9abc83a1b9fea381ca
linuxlinux>= a2d274c62e44b1995c170595db3865c6fe701226 < cf1ac7f7cf601ac31d1580559c002b5e37b733b7cf1ac7f7cf601ac31d1580559c002b5e37b733b7
linuxlinux>= a2d274c62e44b1995c170595db3865c6fe701226 < 2b619445dcb6dab97d8ed033fb57225aca1288c42b619445dcb6dab97d8ed033fb57225aca1288c4
linuxlinux>= a2d274c62e44b1995c170595db3865c6fe701226 < 86586dcb75cb8fd062a518aca8ee667938b91efb86586dcb75cb8fd062a518aca8ee667938b91efb
linuxlinux_kernel>= 0 < 6.12.15-16.12.15-1
linuxlinux_kernel>= 0 < 6.12.15-16.12.15-1
linuxlinux_kernel>= 0 < 6.8.0-64.676.8.0-64.67
linuxlinux_kernel>= 6.13 < 6.13.36.13.3
linuxlinux_kernel>= 6.5 < 6.6.786.6.78
linuxlinux_kernel>= 6.7 < 6.12.146.12.14
msrcazl3_kernel_6.6.64.2-9_on_azure_linux_3.0
msrcazl3_kernel_6.6.78.1-1_on_azure_linux_3.0

CVSS provenance

nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian7.1LOW
vendor_msrc7.1HIGH
vendor_redhat7.1HIGH
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