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

AI Predicted 5.5 Difficulty: Moderate EPSS 0.13% · P3

Possible ATT&CK Techniques 1AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348< 79f44709aa7a744fbfbadd4aef678443290c6991affected
954d1fa1ac93aa8a66f7d9a9ba545cf7f020d348< 55cef78c244d0d076f5a75a35530ca63c92f4426affected
6.4affected
< 6.4unaffected
6.4.8≤ 6.4.*unaffected
6.5≤ *unaffected
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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: CVE Program / CVE List V5
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: 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

CVE-2023-535179.8 CRITICALtipc: do not update mtu if msg_max is too small in mtu negotiation
CVE-2023-534548.8 HIGHHID: multitouch: Correct devm device reference for hidinput input_dev name
CVE-2025-399188.8 HIGHwifi: mt76: fix linked list corruption
CVE-2025-399198.8 HIGHwifi: mt76: mt7996: add missing check for rx wcid entries
CVE-2022-504428.4 HIGHfs/ntfs3: Validate buffer length while parsing index
CVE-2023-534938.4 HIGHaccel/qaic: tighten bounds checking in decode_message()
CVE-2022-504217.8 HIGHrpmsg: char: Avoid double destroy of default endpoint
CVE-2023-534847.8 HIGHlib: cpu_rmap: Avoid use after free on rmap->obj array entries
CVE-2022-504407.8 HIGHdrm/vmwgfx: Validate the box size for the snooped cursor
CVE-2023-535107.8 HIGHscsi: ufs: core: Fix handling of lrbp->cmd
CVE-2025-399247.8 HIGHerofs: fix invalid algorithm for encoded extents
CVE-2023-534657.8 HIGHsoundwire: qcom: fix storing port config out-of-bounds
CVE-2023-535067.8 HIGHudf: Do not bother merging very long extents
CVE-2025-399277.8 HIGHceph: fix race condition validating r_parent before applying state
CVE-2022-504547.8 HIGHdrm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()
CVE-2022-504377.8 HIGHdrm/msm/hdmi: fix memory corruption with too many bridges
CVE-2023-534947.8 HIGHcrypto: xts - Handle EBUSY correctly
CVE-2023-534927.8 HIGHnetfilter: nf_tables: do not ignore genmask when looking up chain by id
CVE-2022-504327.8 HIGHkernfs: fix use-after-free in __kernfs_remove
CVE-2023-534907.8 HIGHmptcp: fix disconnect vs accept race

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53516

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