CVE-2026-52940

In the Linux kernel, the following vulnerability has been resolved: tun: zero the whole vnet header in tunputuser tunputuser declares an on-stack struct virtionethdrv1hashtunnel without zeroing it. For a non-tunnel skb, virtionethdrtnlfromskb only initializes the first 10 bytes sizeofstruct...

UBUNTU-CVE-2026-52916

In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: disallow unicast fragment in fragment batadvfragskbbuffer is called by batadvbatmanskbrecv when a BATADVUNICASTFRAG packet is received. Once all fragments are collected and the packet is reassembled,...

CVE-2026-52940

The CVE-2026-52940 issue affects the Linux kernel tun driver. tun_put_user() allocates an on‑stack virtio_net_hdr_v1_hash_tunnel without zeroing, while virtio_net_hdr_tnl_from_skb() only initializes the first 10 bytes for non‑tunnel SKBs. This allows an unprivileged user to set the vnet header to...

EUVD-2026-38710

In the Linux kernel, the following vulnerability has been resolved: tun: zero the whole vnet header in tunputuser tunputuser declares an on-stack struct virtionethdrv1hashtunnel without zeroing it. For a non-tunnel skb, virtionethdrtnlfromskb only initializes the first 10 bytes sizeofstruct...

CVE-2026-52940 tun: zero the whole vnet header in tun_put_user()

In the Linux kernel, the following vulnerability has been resolved: tun: zero the whole vnet header in tunputuser tunputuser declares an on-stack struct virtionethdrv1hashtunnel without zeroing it. For a non-tunnel skb, virtionethdrtnlfromskb only initializes the first 10 bytes sizeofstruct...

CVE-2026-52940

In the Linux kernel, the following vulnerability has been resolved: tun: zero the whole vnet header in tunputuser tunputuser declares an on-stack struct virtionethdrv1hashtunnel without zeroing it. For a non-tunnel skb, virtionethdrtnlfromskb only initializes the first 10 bytes sizeofstruct...

CVE-2026-52916

CVE-2026-52916 affects the Linux kernel’s BATMAN-adv frag handling. A crafted BATADV_UNICAST_FRAG packet can defragment into another BATADV_UNICAST_FRAG, causing unbounded recursion in batadv_batman_skb_recv() and leading to kernel stack exhaustion. The published description specifies that refrag...

CVE-2026-52916 batman-adv: frag: disallow unicast fragment in fragment

In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: disallow unicast fragment in fragment batadvfragskbbuffer is called by batadvbatmanskbrecv when a BATADVUNICASTFRAG packet is received. Once all fragments are collected and the packet is reassembled,...

PT-2026-51709

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the batman-adv module where the batadv frag skb buffer function is called by batadv batman skb recv upon receiving a BATADV UNICAST FRAG packet. After reassembling the...

Linux Distros Unpatched Vulnerability : CVE-2026-52940

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tun: zero the whole vnet header in tunputuser tunputuser declares an on-stack struct virtionethdrv1hashtunnel without zeroing it. For a non-tunnel skb,...

Linux Distros Unpatched Vulnerability : CVE-2026-52916

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - batman-adv: frag: disallow unicast fragment in fragment batadvfragskbbuffer is called by batadvbatmanskbrecv when a BATADVUNICASTFRAG packet is received. Once a...

Linux Distros Unpatched Vulnerability : CVE-2026-52937

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tap: fix stack info leak in tapioctl SIOCGIFHWADDR In the SIOCGIFHWADDR path, tapioctl copies 16 bytes of an uninitialised on-stack struct sockaddrstorage to...

📄 OpenBSD mpls_do_error Stack Disclosure

OpenBSD suffers from an mplsdoerror remote kernel stack disclosure vulnerability via an MPLS label stack. ------------------------------------------------------------------------ OpenBSD mplsdoerror: Remote Kernel Stack Disclosure via MPLS Label Stack Over-read...

CVE-2026-56099

OpenBSD before commit 6a23123 2026-06-18 contains an out-of-bounds read vulnerability in the mplsdoerror function within sys/netmpls/mplsinput.c that allows remote attackers to disclose kernel stack memory by sending crafted MPLS frames with 16 labels and no Bottom-of-Stack bit set...

CVE-2026-56099

OpenBSD before commit 6a23123 2026-06-18 contains an out-of-bounds read vulnerability in the mplsdoerror function within sys/netmpls/mplsinput.c that allows remote attackers to disclose kernel stack memory by sending crafted MPLS frames with 16 labels and no Bottom-of-Stack bit set...

PT-2026-50785

Name of the Vulnerable Software and Affected Versions OpenBSD versions prior to commit 6a23123 Description An out-of-bounds read exists in the mpls do error function within sys/netmpls/mpls input.c. Remote attackers can disclose kernel stack memory by sending crafted MPLS frames containing 16...

CVE-2026-45250

The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capaci...

PT-2026-52358

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An off-by-one error exists in the lowpan iphc mcast ctx addr compress function. The second memcpy operation incorrectly uses &data1 as the destination and &ipaddr-s6 addr11 as the source...

CVE-2026-45250

The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capaci...

CVE-2026-45250

CVE-2026-45250 concerns a stack buffer overflow in the FreeBSD kernel arising from setcred(2). The unprivileged user can trigger a copyin into a fixed-size kernel-stack array before validating the number of supplementary groups, causing a stack overflow when the list is large. This allows an unpr...