CVE-2025-21742
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21742
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21742.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-21742
- Downstream
- Related
- Published
- 2025-02-27T02:12:16Z
- Modified
- 2025-10-15T22:23:22.346045Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- usbnet: ipheth: use static NDP16 location in URB
- Details
-
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
wNdpIndexvalue 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.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/2b619445dcb6dab97d8ed033fb57225aca1288c4
- https://git.kernel.org/stable/c/86586dcb75cb8fd062a518aca8ee667938b91efb
- https://git.kernel.org/stable/c/8fb062178e1ce180e2cfdc9abc83a1b9fea381ca
- https://git.kernel.org/stable/c/cf1ac7f7cf601ac31d1580559c002b5e37b733b7
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda2d274c62e44b1995c170595db3865c6fe701226Fixed8fb062178e1ce180e2cfdc9abc83a1b9fea381ca
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda2d274c62e44b1995c170595db3865c6fe701226Fixedcf1ac7f7cf601ac31d1580559c002b5e37b733b7
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda2d274c62e44b1995c170595db3865c6fe701226Fixed2b619445dcb6dab97d8ed033fb57225aca1288c4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda2d274c62e44b1995c170595db3865c6fe701226Fixed86586dcb75cb8fd062a518aca8ee667938b91efb