n the Linux kernel, the following vulnerability has been resolved: macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF The previous commit 954d1fa1ac93 ("macvlan: Add netlink attribute for broadcast cutoff") added one additional attribute named IFLA_MACVLAN_BC_CUTOFF to allow broadcast cutfoff. However, it forgot to describe the nla_policy at macvlan_policy (drivers/net/macvlan.c). Hence, this suppose NLA_S32 (4 bytes) integer can be faked as empty (0 bytes) by a malicious user, which could leads to OOB in heap just like CVE-2023-3773. To fix it, this commit just completes the nla_policy description for IFLA_MACVLAN_BC_CUTOFF. This enforces the length check and avoids the potential OOB read.
Configuration 1 (hide)
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26 Jan 2026, 20:10
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
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| References | () https://git.kernel.org/stable/c/55cef78c244d0d076f5a75a35530ca63c92f4426 - Patch | |
| References | () https://git.kernel.org/stable/c/79f44709aa7a744fbfbadd4aef678443290c6991 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:6.5:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.5:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:* |
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| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| CWE | CWE-787 |
02 Oct 2025, 19:11
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Published : 2025-10-01 12:15
Updated : 2026-01-26 20:10
NVD link : CVE-2023-53516
Mitre link : CVE-2023-53516
CVE.ORG link : CVE-2023-53516
JSON object : View
Out-of-bounds Write