In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix publication race for priv->channel_stats[] mlx5e_channel_stats_alloc() publishes a new entry to priv->channel_stats[] and then increments priv->stats_nch as a publication token, but neither store carries any memory barrier: priv->channel_stats[ix] = kvzalloc_node(...); if (!priv->channel_stats[ix]) return -ENOMEM; priv->stats_nch++; Concurrent readers compute the loop bound from priv->stats_nch and then dereference priv->channel_stats[i] using plain accesses, e.g. for (i = 0; i < priv->stats_nch; i++) { struct mlx5e_channel_stats *cs = priv->channel_stats[i]; ... cs->rq.packets ... } On weakly-ordered architectures (ARM, PowerPC, RISC-V) the writes to channel_stats[ix] and stats_nch may become visible to other CPUs out of program order. A reader can observe stats_nch == N while still seeing channel_stats[N-1] == NULL, leading to a NULL pointer dereference in the channel_stats loop. This has been observed in production on BlueField-3 DPUs (arm64), where ovs-vswitchd queries netdev statistics over netlink during NIC bringup, racing mlx5e_open_channel() -> mlx5e_channel_stats_alloc() on another CPU: Unable to handle kernel NULL pointer dereference at virtual address 0x840 Hardware name: BlueField-3 DPU pc : mlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core] Call trace: mlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core] dev_get_stats+0x50/0xc0 ovs_vport_get_stats+0x38/0xac [openvswitch] ovs_vport_cmd_fill_info+0x194/0x290 [openvswitch] ovs_vport_cmd_get+0xbc/0x10c [openvswitch] genl_family_rcv_msg_doit+0xd0/0x160 genl_rcv_msg+0xec/0x1f0 netlink_rcv_skb+0x64/0x130 genl_rcv+0x40/0x60 netlink_unicast+0x2fc/0x370 netlink_sendmsg+0x1dc/0x454 ... __arm64_sys_sendmsg+0x2c/0x40 Add mlx5e_stats_nch_write() and mlx5e_stats_nch_read() helpers in en.h that wrap the smp_store_release()/smp_load_acquire() pair on stats_nch. The release/acquire pair establishes the contract: stats_nch == N => channel_stats[0..N-1] are visible and non-NULL. Publish the stats_nch increment via mlx5e_stats_nch_write() in the writer (mlx5e_channel_stats_alloc()), and read stats_nch via mlx5e_stats_nch_read() in all readers: mlx5e RX/TX queue stats, mlx5e_get_base_stats(), ethtool channels stats, IPoIB stats, the sw_stats fold and the HV VHCA stats agent.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - net/mlx5e: Fix publication race for priv->channel_stats[] mlx5e_channel_stats_alloc() publishes a new     entry to priv->channel_stats[] and then increments priv->stats_nch as a publication token, but neither     store carries any memory barrier: priv->channel_stats[ix] = kvzalloc_node(...); if     (!priv->channel_stats[ix]) return -ENOMEM; priv->stats_nch++; Concurrent readers compute the loop bound     from priv->stats_nch and then dereference priv->channel_stats[i] using plain accesses, e.g. for (i = 0; i     < priv->stats_nch; i++) { struct mlx5e_channel_stats *cs = priv->channel_stats[i]; ... cs->rq.packets ...
    } On weakly-ordered architectures (ARM, PowerPC, RISC-V) the writes to channel_stats[ix] and stats_nch may     become visible to other CPUs out of program order. A reader can observe stats_nch == N while still seeing     channel_stats[N-1] == NULL, leading to a NULL pointer dereference in the channel_stats loop. This has been     observed in production on BlueField-3 DPUs (arm64), where ovs-vswitchd queries netdev statistics over     netlink during NIC bringup, racing mlx5e_open_channel() -> mlx5e_channel_stats_alloc() on another CPU:
    Unable to handle kernel NULL pointer dereference at virtual address 0x840 Hardware name: BlueField-3 DPU     pc : mlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core] Call trace: mlx5e_fold_sw_stats64+0x30/0x180 [mlx5_core]     dev_get_stats+0x50/0xc0 ovs_vport_get_stats+0x38/0xac [openvswitch] ovs_vport_cmd_fill_info+0x194/0x290     [openvswitch] ovs_vport_cmd_get+0xbc/0x10c [openvswitch] genl_family_rcv_msg_doit+0xd0/0x160     genl_rcv_msg+0xec/0x1f0 netlink_rcv_skb+0x64/0x130 genl_rcv+0x40/0x60 netlink_unicast+0x2fc/0x370     netlink_sendmsg+0x1dc/0x454 ... __arm64_sys_sendmsg+0x2c/0x40 Add mlx5e_stats_nch_write() and     mlx5e_stats_nch_read() helpers in en.h that wrap the smp_store_release()/smp_load_acquire() pair on     stats_nch. The release/acquire pair establishes the contract: stats_nch == N => channel_stats[0..N-1] are     visible and non-NULL. Publish the stats_nch increment via mlx5e_stats_nch_write() in the writer     (mlx5e_channel_stats_alloc()), and read stats_nch via mlx5e_stats_nch_read() in all readers: mlx5e RX/TX     queue stats, mlx5e_get_base_stats(), ethtool channels stats, IPoIB stats, the sw_stats fold and the HV     VHCA stats agent. (CVE-2026-72341)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
350138	openSUSE 16: cluster-md-kmp-64kb / cluster-md-kmp-azure / cluster-md-kmp-default / etc (openSUSE-SU-2026:21910-1)	Nessus	SuSE Local Security Checks	Local	high
347900	SUSE SLED15 / SLES15 : Security update for the Linux Kernel (SUSE-SU-2026:4254-1)	Nessus	SuSE Local Security Checks	Local	high
341880	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-2071)	Nessus	Amazon Linux Local Security Checks	Local	high
335707	Linux Distros Unpatched Vulnerability : CVE-2026-72341	Nessus	Misc.	Local	medium

Detections

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CVE-2026-72341

medium

Tenable Plugins

high

high

high

medium