CVE-2023-53516 — Out-of-bounds Read in Kernel

CWE-125 — Out-of-bounds ReadCWE-787 — Out-of-bounds Write5 documents5 sources
Severity
7.8HIGHNVD
OSV4.4
EPSS
0.0%
top 95.25%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Linux KernelDebian Linux
Timeline
PublishedOct 1

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, whi…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages3 packages

▶NVDlinux/linux_kernel6.4 — 6.4.8+1
▶Debianlinux/linux_kernel< 6.4.11-1+1
▶debiandebian/linux< linux 6.4.11-1 (forky)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-m235-57qr-6fh8: In the Linux kernel, the following vulnerability has been resolved: macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF The previous commit↗2025-10-01
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OSV
CVE-2023-53516: In the Linux kernel, the following vulnerability has been resolved: macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF The previous commit 9↗2025-10-01
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📋Vendor Advisories

2
Red Hat
kernel: macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF↗2025-10-01
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Debian
CVE-2023-53516: linux - In the Linux kernel, the following vulnerability has been resolved: macvlan: ad...↗2023
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