kernel: net: sched: act_csum: validate nested VLAN headers

A flaw was found in the Linux kernel's network scheduler component. A remote attacker could send specially crafted network packets containing nested Virtual Local Area Network VLAN headers. This could cause the kernel to read beyond allocated memory, leading to a system crash and a denial of...

kernel: net: sched: act_csum: validate nested VLAN headers

A flaw was found in the Linux kernel's network scheduler component. A remote attacker could send specially crafted network packets containing nested Virtual Local Area Network VLAN headers. This could cause the kernel to read beyond allocated memory, leading to a system crash and a denial of...

CVE-2026-5138

A flaw was found in Foreman. An authenticated user with host-edit permissions could exploit a cross-tenant information disclosure vulnerability. This flaw occurs because the taxonomyscope controller method does not properly validate organization and location IDs from nested request parameters,...

EUVD-2026-41004

A flaw was found in Foreman. An authenticated user with host-edit permissions could exploit a cross-tenant information disclosure vulnerability. This flaw occurs because the taxonomyscope controller method does not properly validate organization and location IDs from nested request parameters,...

CVE-2026-5138

A flaw was found in Foreman. An authenticated user with host-edit permissions could exploit a cross-tenant information disclosure vulnerability. This flaw occurs because the taxonomyscope controller method does not properly validate organization and location IDs from nested request parameters,...

CVE-2026-5138

Foreman vulnerability CVE-2026-5138 involves the taxonomy_scope controller failing to validate organization and location IDs in nested request parameters. An authenticated user with host-edit permissions can trigger cross-tenant information disclosure, leaking sensitive infrastructure metadata (s...

ALSA-2026:30848 Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: drm/amd/display: Do not skip unrelated mode changes in DSC validation CVE-2026-31488 kernel: ipv6: icmp: clear skb2-cb in ip6errgenicmpv6unreach CVE-2026-43038 kernel: netfilter: flowtabl...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: In the net: bridge section, for the mcast function, it was decided to always update the mdbnEntries value for VLAN contexts. The syzbot triggered a warning1 regarding the number of mdb entries in a context. It turns out that ther...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: macvlan: fixed a possible Use-after-Allocation UAF in macvlanforwardsource. Added RCU protection for the vlan field in struct macvlansourceentry. Whenever macvlanhashdelsource is called, we must clear the entry-vlan pointer befor...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: ip6tunnel: Use skbvlaninetprepare in ip6tnlrcv. The responsible commit did not handle VLAN encapsulation as detected by syzbot 1. Use skbvlaninetprepare instead of pskbinetmaypull. 1 BUG: KMSAN: uninit-value in...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: net: hns3 – added validation of the VLAN ID before using it. Currently, the VLAN ID can be used without validation when receiving a VLAN configuration mailbox from VF. The length of vlansdelfailbmap is BITSTOLONGSVLANNVID. This m...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Networks: Bridges – Fix for use-after-free due to bypassing the port’s state. 1 Syzbot reported a use-after-free when deleting an expired fdb. This issue arises due to a race condition between the ongoing learning process and the...

Astra Linux – Vulnerability in grub2

A vulnerability has been identified in the GRUB2 bootloader’s network module, posing an immediate Denial of Service DoS risk. This flaw is a use-after-free issue, as the netsetvlan command is not properly unregistered when the network module is unloaded from memory. An attacker who can execute th...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Bridge: mcast: Fixed a use-after-free during router port configuration. The bridge maintains a global list of ports behind which a multicast router resides. This list is consulted during forwarding to ensure that multicast packet...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: hns3 – Added a vlan list lock to protect the vlan list. When adding a port-based VLAN, the vf VLAN needs to be removed from the hardware, and the vlan state in the vf VLAN list must be set to “false”. If the periodic task...

kernel: macvlan: fix possible UAF in macvlan_forward_source()

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix possible UAF in macvlanforwardsource Add RCU protection on struct macvlansourceentry-vlan. Whenever macvlanhashdelsource is called, we must clear entry-vlan pointer before RCU grace period starts. This allows...

SUSE CVE-2026-46433

lldpd is an implementation of IEEE 802.1ab LLDP. Prior to version 1.0.22, lldpddecode in src/daemon/lldpd.c strips 802.1Q VLAN tags from received Ethernet frames by calling memmove to shift the frame payload 4 bytes left. The third argument byte count is s - 2 ETHERADDRLEN but should be s - 2...

kernel: macvlan: fix possible UAF in macvlan_forward_source()

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix possible UAF in macvlanforwardsource Add RCU protection on struct macvlansourceentry-vlan. Whenever macvlanhashdelsource is called, we must clear entry-vlan pointer before RCU grace period starts. This allows...

lldpd: Heap OOB Read in VLAN Decapsulation memmove

...

CVE-2026-46433

lldpd is an implementation of IEEE 802.1ab LLDP. Prior to version 1.0.22, lldpddecode in src/daemon/lldpd.c strips 802.1Q VLAN tags from received Ethernet frames by calling memmove to shift the frame payload 4 bytes left. The third argument byte count is s - 2 ETHERADDRLEN but should be s - 2...