CVE-2025-52889
published 2025-06-25CVE-2025-52889: Incus is a system container and virtual machine manager. When using an ACL on a device connected to a bridge, Incus version 6.12 and 6.13 generates nftables…
PriorityP412low3.4CVSS 3.1
AVAACLPRHUINSCCNINAL
EPSS
0.20%
10.2th percentile
Incus is a system container and virtual machine manager. When using an ACL on a device connected to a bridge, Incus version 6.12 and 6.13 generates nftables rules for local services (DHCP, DNS...) that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to DHCP pool exhaustion and opens the door for other attacks. A patch is available at commit 2516fb19ad8428454cb4edfe70c0a5f0dc1da214.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | incus | — | — |
| github.com | lxc_incus_v6 | >= 0 < 6.14.0 | 6.14.0 |
| github.com | lxc_incus_v6 | >= 6.12.0 < 6.14.0 | 6.14.0 |
| lxc | incus | — | — |
| msrc | azl3_kernel_6.6.43.1-7_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.47.1-1_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_kernel_5.15.164.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.167.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
CVSS provenance
nvdv3.13.4LOWCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
osv3.4LOW
vendor_msrc5.5MEDIUM
vendor_debian3.4LOW
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OSV
Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks in github.com/lxc/incus
osv·2025-07-28
CVE-2025-52889 Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks in github.com/lxc/incus
Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks in github.com/lxc/incus
Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks in github.com/lxc/incus
GHSA
Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks
ghsa·2025-06-26
CVE-2025-52889 [LOW] CWE-770 Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks
Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks
### Summary
When using an ACL on a device connected to a bridge, Incus generates nftables rules for local services (DHCP, DNS...) that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to DHCP pool exhaustion and opens the door for other attacks.
### Details
In commit a7c33301738aede3c035063e973b1d885d9bac7c, the following rules are added at the top of the bridge input chain:
iifname "{{.hostName}}" ether type ip ip saddr 0.0.0.0 ip daddr 255.255.255.255 udp dport 67 accept
iifname "{{.hostName}}" ether type ip6 ip6 saddr fe80::/10 ip6 daddr ff02::1:2 udp dport 547 accept
iifname "{{.hostName}}" ether type
OSV
Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks
osv·2025-06-26
CVE-2025-52889 [LOW] Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks
Incus Allocation of Resources Without Limits allows firewall rule bypass on managed bridge networks
### Summary
When using an ACL on a device connected to a bridge, Incus generates nftables rules for local services (DHCP, DNS...) that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to DHCP pool exhaustion and opens the door for other attacks.
### Details
In commit a7c33301738aede3c035063e973b1d885d9bac7c, the following rules are added at the top of the bridge input chain:
iifname "{{.hostName}}" ether type ip ip saddr 0.0.0.0 ip daddr 255.255.255.255 udp dport 67 accept
iifname "{{.hostName}}" ether type ip6 ip6 saddr fe80::/10 ip6 daddr ff02::1:2 udp dport 547 accept
iifname "{{.hostName}}" ether type
OSV
CVE-2025-52889: Incus is a system container and virtual machine manager
osv·2025-06-25·CVSS 3.4
CVE-2025-52889 [LOW] CVE-2025-52889: Incus is a system container and virtual machine manager
Incus is a system container and virtual machine manager. When using an ACL on a device connected to a bridge, Incus version 6.12 and 6.13 generates nftables rules for local services (DHCP, DNS...) that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to DHCP pool exhaustion and opens the door for other attacks. A patch is available at commit 2516fb19ad8428454cb4edfe70c0a5f0dc1da214.
Debian
CVE-2025-52889: incus - Incus is a system container and virtual machine manager. When using an ACL on a ...
vendor_debian·2025·CVSS 3.4
CVE-2025-52889 [LOW] CVE-2025-52889: incus - Incus is a system container and virtual machine manager. When using an ACL on a ...
Incus is a system container and virtual machine manager. When using an ACL on a device connected to a bridge, Incus version 6.12 and 6.13 generates nftables rules for local services (DHCP, DNS...) that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to DHCP pool exhaustion and opens the door for other attacks. A patch is available at commit 2516fb19ad8428454cb4edfe70c0a5f0dc1da214.
Scope: local
forky: resolved
sid: resolved
trixie: resolved
Microsoft
apparmor: Fix null pointer deref when receiving skb during sock creation
vendor_msrc·2024-08-13·CVSS 5.5
CVE-2023-52889 [MEDIUM] CWE-476 apparmor: Fix null pointer deref when receiving skb during sock creation
apparmor: Fix null pointer deref when receiving skb during sock creation
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Referen
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-06-25
Published