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...

SUSE-SU-2026:2592-1 Security update for the Linux Kernel (Live Patch 79 for SUSE Linux Enterprise 12 SP5)

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.299 fixes various security issues The following security issues were fixed: - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache bsc1261640. - CVE-2026-31504: net: fix fanout UAF in packetrelease via NETDEVUP race...

CVE-2026-46323 net: gro: don't merge zcopy skbs

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...

CVE-2026-23445

In the Linux kernel, the following vulnerability has been resolved: igc: fix page fault in XDP TX timestamps handling If an XDP application that requested TX timestamping is shutting down while the link of the interface in use is still up the following kernel splat is reported: 883.803618 T1554...

CVE-2023-54223

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: xsk: Fix invalid buffer access for legacy rq The below crash can be encountered when using xdpsock in rx mode for legacy rq: the buffer gets released in the XDPREDIRECT path, and then once again in the driver. This fix...

EUVD-2025-201616

In the Linux kernel, the following vulnerability has been resolved: xsk: avoid data corruption on cq descriptor number Since commit 30f241fcf52a "xsk: Fix immature cq descriptor production", the descriptor number is stored in skb control block and xskcqsubmitaddrlocked relies on it to put the ume...

CVE-2025-40290

CVE-2025-40290 concerns the Linux kernel’s XSk patching path. The issue arises from storing the descriptor number in the skb control block to track umem addresses for the xsk completion queue, which is unsafe since the skb control block can be overwritten after transmission. This leads to a NULL ...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: gve: guard XSK operations on the existence of queues This patch predicates the enabling and disabling of XSK pools on the existence of queues. As it stands, if the interface is down, disabling or enabling XSK pools would result i...

DEBIAN-CVE-2023-53698

In the Linux kernel, the following vulnerability has been resolved: xsk: fix refcount underflow in error path Fix a refcount underflow problem reported by syzbot that can happen when a system is running out of memory. If xpalloctxdescs fails, and it can only fail due to not having enough memory,...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from improper handling of zero-copy SKB and TX timestamps in the TCP/UDP protocols, which could lead to a memory...

PT-2025-37681

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability exists in the Linux kernel related to the xsk socket kernel functionality. Specifically, the issue involves a potential NULL pointer dereference in the xsk transmit Tx pa...

CVE-2024-57933 gve: guard XSK operations on the existence of queues

In the Linux kernel, the following vulnerability has been resolved: gve: guard XSK operations on the existence of queues This patch predicates the enabling and disabling of XSK pools on the existence of queues. As it stands, if the interface is down, disabling or enabling XSK pools would result i...

SUSE CVE-2024-35834

In the Linux kernel, the following vulnerability has been resolved: xsk: recycle buffer in case Rx queue was full Add missing xskbufffree call when xskrcvzc failed to produce descriptor to XSK Rx queue...

kernel: net/mlx5e: xsk: Fix crash on regular rq reactivation

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: xsk: Fix crash on regular rq reactivation When the regular rq is reactivated after the XSK socket is closed it could be reading stale cqes which eventually corrupts the rq. This leads to no more traffic being received ...

UBUNTU-CVE-2021-47105

In the Linux kernel, the following vulnerability has been resolved: ice: xsk: return xsk buffers back to pool when cleaning the ring Currently we only NULL the xdpbuff pointer in the internal SW ring but we never give it back to the xsk buffer pool. This means that buffers can be leaked out of th...