# CVE-2026-72344: linux: In the Linux kernel, the following vulnerability has been resolved:  net/mlx5e: TC, skip peer flow cleanup when LAG s...

CVE-2026-72344 is fixed in linux on 1 platform by DEBIAN-CVE-2026-72344 (version 7.1.5-1), released August 15, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-72344
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 15, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable  mlx5_lag_get_dev_seq() will return error when the peer isn't in the LAG or when no device is marked as master. Result bad memory access and kernel crash[1].  Hence, skip the peer when lookup fails.  Note: In case there are peer flows, they are cleaned before LAG cleared the master mark.  [1] RIP: 0010:mlx5e_tc_del_fdb_peers_flow+0x3d/0x350 [mlx5_core] Call Trace:  <TASK>  mlx5e_tc_clean_fdb_peer_flows+0xc1/0x130 [mlx5_core]  mlx5_esw_offloads_unpair+0x3a/0x400 [mlx5_core]  mlx5_esw_offloads_devcom_event+0xee/0x360 [mlx5_core]  mlx5_devcom_send_event+0x7a/0x140 [mlx5_core]  mlx5_esw_offloads_devcom_cleanup+0x2f/0x90 [mlx5_core]  mlx5e_tc_esw_cleanup+0x28/0xf0 [mlx5_core]  mlx5e_rep_tc_cleanup+0x19/0x30 [mlx5_core]  mlx5e_cleanup_uplink_rep_tx+0x36/0x40 [mlx5_core]  mlx5e_cleanup_rep_tx+0x55/0x60 [mlx5_core]  mlx5e_detach_netdev+0x96/0xf0 [mlx5_core]  mlx5e_netdev_change_profile+0x5b/0x120 [mlx5_core]  mlx5e_netdev_attach_nic_profile+0x1b/0x30 [mlx5_core]  mlx5e_vport_rep_unload+0xdd/0x110 [mlx5_core]  __esw_offloads_unload_rep+0x81/0xb0 [mlx5_core]  mlx5_eswitch_unregister_vport_reps+0x1d7/0x220 [mlx5_core]  mlx5e_rep_remove+0x22/0x30 [mlx5_core]  device_release_driver_internal+0x194/0x1f0  bus_remove_device+0xe8/0x1b0  device_del+0x159/0x3c0  mlx5_rescan_drivers_locked+0xbc/0x2d0 [mlx5_core]  mlx5_unregister_device+0x54/0x80 [mlx5_core]  mlx5_uninit_one+0x73/0x130 [mlx5_core]  remove_one+0x78/0xe0 [mlx5_core]  pci_device_remove+0x39/0xa0

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.1.5-1 | [DEBIAN-CVE-2026-72344](https://patchblox.com/security/data/fix/linux/debian-cve-2026-72344.md) | Aug 15, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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