Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: gro: fixed ownership transfer If packets are processed with a fraglist, they may be segmented later on and continue their journey within the stack. In skbSegmentlist, these skbs can be reused as is. This is a problem because thei...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: hisilicon: Fixed potential use-after-free in hisifemacrx The skb object is passed to napigroreceive, which may free it. After calling this function, dereferencing the skb object may trigger a use-after-free...

PT-2026-83418

In the Linux kernel, the following vulnerability has been resolved: net: gro: properly validate BIG TCP aggregation criteria When GRO attempts to aggregate packets beyond GRO LEGACY MAX SIZE 64KB, BIG TCP should only be permitted for plain IPv4 TCP and plain IPv6 TCP with sufficient MAC header ro...

CVE-2026-74406

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix potential null-ptr-deref in vxlangropreparereceive. udptunnelsockrelease could set sk-skuserdata to NULL while vxlangropreparereceive is running. Let's check if rcudereferenceskuserdata is NULL after skbgroremcsuminit...

EUVD-2026-59553

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix potential null-ptr-deref in vxlangropreparereceive. udptunnelsockrelease could set sk-skuserdata to NULL while vxlangropreparereceive is running. Let's check if rcudereferenceskuserdata is NULL after skbgroremcsuminit...

CVE-2026-74406

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix potential null-ptr-deref in vxlangropreparereceive. udptunnelsockrelease could set sk-skuserdata to NULL while vxlangropreparereceive is running. Let's check if rcudereferenceskuserdata is NULL after skbgroremcsuminit...

CVE-2026-74406 vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix potential null-ptr-deref in vxlangropreparereceive. udptunnelsockrelease could set sk-skuserdata to NULL while vxlangropreparereceive is running. Let's check if rcudereferenceskuserdata is NULL after skbgroremcsuminit...

SUSE-SU-2026:22278-1 Security update for the Linux Kernel (Live Patch 2 for SUSE Linux Enterprise 16)

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.7.1 fixes various security issues The following security issues were fixed: - CVE-2026-23278: netfilter: nftables: always walk all pending catchall elements bsc1260907. - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay...

CVE-2026-53235

In the Linux kernel, the following vulnerability has been resolved: net: add pskbmaypull to skbgroreceivelist skbgroreceivelist calls skbpullskb, skbgrooffsetskb without first ensuring the data is in the linear area via pskbmaypull. When the skb arrives via napigrofrags, skbheadlen can be 0 all...

CVE-2026-53235

In the Linux kernel, the following vulnerability has been resolved: net: add pskbmaypull to skbgroreceivelist skbgroreceivelist calls skbpullskb, skbgrooffsetskb without first ensuring the data is in the linear area via pskbmaypull. When the skb arrives via napigrofrags, skbheadlen can be 0 all...

UBUNTU-CVE-2026-53235

In the Linux kernel, the following vulnerability has been resolved: net: add pskbmaypull to skbgroreceivelist skbgroreceivelist calls skbpullskb, skbgrooffsetskb without first ensuring the data is in the linear area via pskbmaypull. When the skb arrives via napigrofrags, skbheadlen can be 0 all...

CVE-2026-53235 net: add pskb_may_pull() to skb_gro_receive_list()

In the Linux kernel, the following vulnerability has been resolved: net: add pskbmaypull to skbgroreceivelist skbgroreceivelist calls skbpullskb, skbgrooffsetskb without first ensuring the data is in the linear area via pskbmaypull. When the skb arrives via napigrofrags, skbheadlen can be 0 all...

CVE-2026-53235

In the Linux kernel, the following vulnerability has been resolved: net: add pskbmaypull to skbgroreceivelist skbgroreceivelist calls skbpullskb, skbgrooffsetskb without first ensuring the data is in the linear area via pskbmaypull. When the skb arrives via napigrofrags, skbheadlen can be 0 all...

EUVD-2026-39326

In the Linux kernel, the following vulnerability has been resolved: net: add pskbmaypull to skbgroreceivelist skbgroreceivelist calls skbpullskb, skbgrooffsetskb without first ensuring the data is in the linear area via pskbmaypull. When the skb arrives via napigrofrags, skbheadlen can be 0 all...

kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs

A flaw was found in the Linux kernel's Generic Receive Offload GRO networking subsystem. This vulnerability occurs when skbgroreceive attempts to merge zerocopy socket buffers skbs without properly managing page reference counts, specifically when the SKBFLMANAGEDFRAGREFS flag is set. An attacker...

Linux Distros Unpatched Vulnerability : CVE-2026-46323

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: net: gro: don't merge zcopy skbs skbgroreceive can currently copy frags between the source a...

CVE-2026-46323

In the Linux kernel, the following vulnerability has been resolved: net: gro: don't merge zcopy skbs skbgroreceive can currently copy frags between the source and GRO skb, without checking the zerocopy status, and in particular the SKBFLMANAGEDFRAGREFS flag. When SKBFLMANAGEDFRAGREFS is set, the...

Linux 释放后重用漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the function skbgroreceive, which does not check the zero-copy status during the copy of frags,...

CVE-2026-46300 net: skbuff: preserve shared-frag marker during coalescing

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: preserve shared-frag marker during coalescing skbtrycoalesce can attach paged frags from @from to @to. If @from has SKBFLSHAREDFRAG set, the resulting @to skb can contain the same externally-owned or page-cache-backe...

CVE-2026-46300

CVE-2026-46300 ("Fragnesia") is a local privilege escalation in the Linux kernel's ESP/XFRM (IPsec ESP-in-TCP) subsystem. The root cause is that skb_try_coalesce() fails to propagate the SKBFL_SHARED_FRAG marker when transferring paged fragments, causing ESP to skip skb_cow_data() and decrypt in ...