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CVE-2023-53516— macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF

EPSS 0.02% · P6
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I. Basic Information for CVE-2023-53516

Vulnerability Information
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Vulnerability Title
macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF
Source: NVD (National Vulnerability Database)
Vulnerability Description
In 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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，该漏洞源于缺少IFLA_MACVLAN_BC_CUTOFF属性的nla_policy描述，可能导致堆越界读取。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348 ~ 79f44709aa7a744fbfbadd4aef678443290c6991 -
LinuxLinux 6.4 -

II. Public POCs for CVE-2023-53516

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III. Intelligence Information for CVE-2023-53516

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Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total

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Showing top 20 of 169 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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