CVE-2026-80839

CVE-2026-80839 affects the batman-adv module in the Linux kernel . The root cause is that batadv_tvlv_call_handler() sets the 16-bit network and transport header offsets from a received multicast TVLV without validating whether the TVLV end offset is representable. When it exceeds the field's ran...

EUVD-2026-71289

In the Linux kernel, the following vulnerability has been resolved: batman-adv: reject unrepresentable multicast TVLV offsets The network and transport header fields in struct skbuff are 16-bit offsets from skb-head, and U16MAX is reserved as the unset transport header value. batadvtvlvcallhandle...

CVE-2026-80839

In the Linux kernel, the following vulnerability has been resolved: batman-adv: reject unrepresentable multicast TVLV offsets The network and transport header fields in struct skbuff are 16-bit offsets from skb-head, and U16MAX is reserved as the unset transport header value. batadvtvlvcallhandle...

CVE-2026-80839 batman-adv: reject unrepresentable multicast TVLV offsets

In the Linux kernel, the following vulnerability has been resolved: batman-adv: reject unrepresentable multicast TVLV offsets The network and transport header fields in struct skbuff are 16-bit offsets from skb-head, and U16MAX is reserved as the unset transport header value. batadvtvlvcallhandle...

Linux Distros Unpatched Vulnerability : CVE-2026-80839

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - batman-adv: reject unrepresentable multicast TVLV offsets The network and transport header fields in struct skbuff are 16-bit offsets from skb-head, and U16MAX ...

CVE-2026-72226

A flaw was found in the Linux kernel's batman-adv Better Approach To Mobile Ad-hoc Networking - Advanced module. An integer overflow can occur when calculating the length of a Translation Table Type-Length-Value TVLV unicast message. This overflow can lead to invalid safety checks, allowing an...

CVE-2026-72226

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadvtvlvttvlandata 8 bytes. The size can therefore...

CVE-2026-72226

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadvtvlvttvlandata 8 bytes. The size can therefore...

UBUNTU-CVE-2026-72226

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadvtvlvttvlandata 8 bytes. The size can therefore...

CVE-2026-72227

CVE-2026-72227 affects the Linux kernel’s Batman- ADV multicast (mcast) handling. The issue occurs when accessing batadv_tvlv_mcast_tracker’s num_dests: instead of validating the full header size with a safe check (offsetofend), the code calls offsetof, which returns 0, causing the network header...

CVE-2026-72227 batman-adv: mcast: avoid OOB read of num_dests header

In the Linux kernel, the following vulnerability has been resolved: batman-adv: mcast: avoid OOB read of numdests header Before the access to struct batadvtvlvmcasttracker's numdests, it is attempted to check whether enough space is actually in the network header. But instead of using offsetofend...

CVE-2026-72226 batman-adv: tt: prevent TVLV OOB check overflow

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadvtvlvttvlandata 8 bytes. The size can therefore...

CVE-2026-72226 batman-adv: tt: prevent TVLV OOB check overflow

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadvtvlvttvlandata 8 bytes. The size can therefore...

CVE-2026-72226

CVE-2026-72226 concerns the Linux kernel’s batman-adv TT TVLV handling. A unicast TVLV contains the number of VLANs (u16) and multiplies it by 8 (batadv_tvlv_tt_vlan_data). This can overflow the 16-bit tt_vlan_len, invalidating safety checks for out-of-bounds access. The published fix switches to...

EUVD-2026-59125

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadvtvlvttvlandata 8 bytes. The size can therefore...

PT-2026-72414

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadv tvlv tt vlan data 8 bytes. The size can...

CVE-2026-64088

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: fix negative ttbufflen batadvorignode::ttbufflen was declared as s16, but the field is never intended to hold a negative value. When a value greater than 32767 is assigned, it wraps to a negative signed integer. I...

SUSE CVE-2026-52934

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tvlv: reject oversized TVLV packets batadvtvlvcontainerogmappend builds a TVLV packet section from the tvlv.containerlist. The total size of this section is computed by batadvtvlvcontainerlistsize, which sums the size...

CVE-2026-52934

A flaw was found in the Linux kernel's batman-adv Better Approach To Mobile Ad-hoc Networking - Advanced module. An integer overflow vulnerability in the TVLV Type-Length-Value packet processing can lead to an undersized memory allocation. This allows a subsequent operation to write beyond the...

CVE-2026-52934

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tvlv: reject oversized TVLV packets batadvtvlvcontainerogmappend builds a TVLV packet section from the tvlv.containerlist. The total size of this section is computed by batadvtvlvcontainerlistsize, which sums the size...