UBUNTU-CVE-2026-46207

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix empty payload in tap skb for non-linear buffers For non-linear skbs, virtiotransportbuildskb goes through virtiotransportcopynonlinearskb to copy the original payload in the new skb to be delivered to the vsockm...

CVE-2026-46159

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix btrfsioctlspaceinfo slotcount TOCTOU which can lead to info-leak btrfsioctlspaceinfo has a TOCTOU race between two passes over the block group RAID type lists. The first pass counts entries to determine the allocation...

CVE-2026-46181

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Fix mis-use of RCU in mlx4srqevent Sashiko points out the radixtree itself is RCU safe, but nothing ever frees the mlx4srq struct with RCU, and it isn't even accessed within the RCU critical section. It also will crash...

CVE-2026-46207

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix empty payload in tap skb for non-linear buffers For non-linear skbs, virtiotransportbuildskb goes through virtiotransportcopynonlinearskb to copy the original payload in the new skb to be delivered to the vsockm...

UBUNTU-CVE-2026-46116

In the Linux kernel, the following vulnerability has been resolved: xfrm: defensively unhash xfrmstate lists in xfrmstatedelete KASAN reproduces a slab-use-after-free in xfrmstatedelete's hlistdelrcu calls under syzkaller load on linux-6.12.y stable reproduced on 6.12.47, also reachable via the...

CVE-2026-46233 batman-adv: bla: only purge non-released claims

In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: only purge non-released claims When batadvblapurgeclaims goes through the list of claims, it is only traversing the hash list with an rcureadlock. Due to a potential parallel batadvclaimput, it can happen that it...

CVE-2026-46211

CVE-2026-46211 affects the Linux kernel drm/msm/gem component. The flaw in msm_ioctl_gem_info_get_metadata() can cause a NULL pointer dereference due to unchecked allocation (kmemdup()) and always returning 0 on errors, making userspace believe success. The issue is fixed by adding a NULL check f...

EUVD-2026-32838

In the Linux kernel, the following vulnerability has been resolved: drm/msm/gem: fix error handling in msmioctlgeminfogetmetadata msmioctlgeminfogetmetadata always returns 0 regardless of errors. When copytouser fails or the user buffer is too small, the error code stored in ret is ignored becaus...

CVE-2026-46207 vsock/virtio: fix empty payload in tap skb for non-linear buffers

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix empty payload in tap skb for non-linear buffers For non-linear skbs, virtiotransportbuildskb goes through virtiotransportcopynonlinearskb to copy the original payload in the new skb to be delivered to the vsockm...

EUVD-2026-32834

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix empty payload in tap skb for non-linear buffers For non-linear skbs, virtiotransportbuildskb goes through virtiotransportcopynonlinearskb to copy the original payload in the new skb to be delivered to the vsockm...

CVE-2026-46207

The CVE-2026-46207 issue affects the Linux kernel’s vsock/virtio path, where non-linear skbs could fail to copy payloads to the vsockmon tap device due to iov_iter not being properly initialized. The fix standardizes handling for both linear and non-linear skbs by removing the linear/non-linear s...

CVE-2026-46182

In the Linux kernel, the following vulnerability has been resolved: pseries/papr-hvpipe: Prevent kernel stack memory leak to userspace The hdr variable is allocated on the stack and only hdr.version and hdr.flags are initialized explicitly. Because the struct paprhvpipehdr contains reserved paddi...

CVE-2026-46182

The CVE-2026-46182 issue affects the Linux kernel component pseries/papr-hvpipe . The root cause is that a local kernel stack variable hdr (papr_hvpipe_hdr) is allocated on the stack and only hdr.version and hdr.flags are initialized, leaving reserved padding bytes uninitialized. When copied to u...

EUVD-2026-32808

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Fix mis-use of RCU in mlx4srqevent Sashiko points out the radixtree itself is RCU safe, but nothing ever frees the mlx4srq struct with RCU, and it isn't even accessed within the RCU critical section. It also will crash...

CVE-2026-46181

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Fix mis-use of RCU in mlx4srqevent Sashiko points out the radixtree itself is RCU safe, but nothing ever frees the mlx4srq struct with RCU, and it isn't even accessed within the RCU critical section. It also will crash...

CVE-2026-46181

Summary: CVE-2026-46181 concerns the Linux kernel RDMA/mlx4 component. The root cause is improper use of Read-Copy Update (RCU) in mlx4_srq_event(), which could allow a race where an event is delivered before the srq object is fully initialized, potentially crashing the system. The documented fix...

CVE-2026-46181 RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event()

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Fix mis-use of RCU in mlx4srqevent Sashiko points out the radixtree itself is RCU safe, but nothing ever frees the mlx4srq struct with RCU, and it isn't even accessed within the RCU critical section. It also will crash...

CVE-2026-46165 openvswitch: vport: fix self-deadlock on release of tunnel ports

In the Linux kernel, the following vulnerability has been resolved: openvswitch: vport: fix self-deadlock on release of tunnel ports vports are used concurrently and protected by RCU, so netdevput must happen after the RCU grace period. So, either in an RCU call or after the synchronizenet. The...

CVE-2026-46165

CVE-2026-46165 affects the Linux kernel openvswitch vport code, where a self-deadlock could occur on tunnel port release due to improper ordering between RCU callbacks and RTNL/normally synchronized code paths. The root cause: vports are protected by RCU and must have netdev_put() after the RCU g...

EUVD-2026-32792

In the Linux kernel, the following vulnerability has been resolved: openvswitch: vport: fix self-deadlock on release of tunnel ports vports are used concurrently and protected by RCU, so netdevput must happen after the RCU grace period. So, either in an RCU call or after the synchronizenet. The...