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Unscored CVE-2022-49338 EUVD-2022-54890GHSA-h32p-fx4x-w3v5

net/mlx5e: CT: Fix cleanup of CT before cleanup of TC ct rules

Published Feb 26, 2025 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.3 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

net/mlx5e: CT: Fix cleanup of CT before cleanup of TC ct rules

CT cleanup assumes that all tc rules were deleted first, and so
is free to delete the CT shared resources (e.g the dr_action
fwd_action which is shared for all tuples). But currently for
uplink, this is happens in reverse, causing the below trace.

CT cleanup is called from:
mlx5e_cleanup_rep_tx()->mlx5e_cleanup_uplink_rep_tx()->
mlx5e_rep_tc_cleanup()->mlx5e_tc_esw_cleanup()->
mlx5_tc_ct_clean()

Only afterwards, tc cleanup is called from:
mlx5e_cleanup_rep_tx()->mlx5e_tc_ht_cleanup()
which would have deleted all the tc ct rules, and so delete
all the offloaded tuples.

Fix this reversing the order of init and on cleanup, which
will result in tc cleanup then ct cleanup.

[ 9443.593347] WARNING: CPU: 2 PID: 206774 at drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c:1882 mlx5dr_action_destroy+0x188/0x1a0 [mlx5_core]
[ 9443.593349] Modules linked in: act_ct nf_flow_table rdma_ucm(O) rdma_cm(O) iw_cm(O) ib_ipoib(O) ib_cm(O) ib_umad(O) mlx5_core(O-) mlxfw(O) mlxdevm(O) auxiliary(O) ib_uverbs(O) psample ib_core(O) mlx_compat(O) ip_gre gre ip_tunnel act_vlan bonding geneve esp6_offload esp6 esp4_offload esp4 act_tunnel_key vxlan ip6_udp_tunnel udp_tunnel act_mirred act_skbedit act_gact cls_flower sch_ingress nfnetlink_cttimeout nfnetlink xfrm_user xfrm_algo 8021q garp stp ipmi_devintf mrp ipmi_msghandler llc openvswitch nsh nf_conncount nf_nat mst_pciconf(O) dm_multipath sbsa_gwdt uio_pdrv_genirq uio mlxbf_pmc mlxbf_pka mlx_trio mlx_bootctl(O) bluefield_edac sch_fq_codel ip_tables ipv6 crc_ccitt btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq raid1 raid0 crct10dif_ce i2c_mlxbf gpio_mlxbf2 mlxbf_gige aes_neon_bs aes_neon_blk [last unloaded: mlx5_ib]
[ 9443.593419] CPU: 2 PID: 206774 Comm: modprobe Tainted: G O 5.4.0-1023.24.gc14613d-bluefield #1
[ 9443.593422] Hardware name: https://www.mellanox.com BlueField SoC/BlueField SoC, BIOS BlueField:143ebaf Jan 11 2022
[ 9443.593424] pstate: 20000005 (nzCv daif -PAN -UAO)
[ 9443.593489] pc : mlx5dr_action_destroy+0x188/0x1a0 [mlx5_core]
[ 9443.593545] lr : mlx5_ct_fs_smfs_destroy+0x24/0x30 [mlx5_core]
[ 9443.593546] sp : ffff8000135dbab0
[ 9443.593548] x29: ffff8000135dbab0 x28: ffff0003a6ab8e80
[ 9443.593550] x27: 0000000000000000 x26: ffff0003e07d7000
[ 9443.593552] x25: ffff800009609de0 x24: ffff000397fb2120
[ 9443.593554] x23: ffff0003975c0000 x22: 0000000000000000
[ 9443.593556] x21: ffff0003975f08c0 x20: ffff800009609de0
[ 9443.593558] x19: ffff0003c8a13380 x18: 0000000000000014
[ 9443.593560] x17: 0000000067f5f125 x16: 000000006529c620
[ 9443.593561] x15: 000000000000000b x14: 0000000000000000
[ 9443.593563] x13: 0000000000000002 x12: 0000000000000001
[ 9443.593565] x11: ffff800011108868 x10: 0000000000000000
[ 9443.593567] x9 : 0000000000000000 x8 : ffff8000117fb270
[ 9443.593569] x7 : ffff0003ebc01288 x6 : 0000000000000000
[ 9443.593571] x5 : ffff800009591ab8 x4 : fffffe000f6d9a20
[ 9443.593572] x3 : 0000000080040001 x2 : fffffe000f6d9a20
[ 9443.593574] x1 : ffff8000095901d8 x0 : 0000000000000025
[ 9443.593577] Call trace:
[ 9443.593634] mlx5dr_action_destroy+0x188/0x1a0 [mlx5_core]
[ 9443.593688] mlx5_ct_fs_smfs_destroy+0x24/0x30 [mlx5_core]
[ 9443.593743] mlx5_tc_ct_clean+0x34/0xa8 [mlx5_core]
[ 9443.593797] mlx5e_tc_esw_cleanup+0x58/0x88 [mlx5_core]
[ 9443.593851] mlx5e_rep_tc_cleanup+0x24/0x30 [mlx5_core]
[ 9443.593905] mlx5e_cleanup_rep_tx+0x6c/0x78 [mlx5_core]
[ 9443.593959] mlx5e_detach_netdev+0x74/0x98 [mlx5_core]
[ 9443.594013] mlx5e_netdev_change_profile+0x70/0x180 [mlx5_core]
[ 9443.594067] mlx5e_netdev_attach_nic_profile+0x34/0x40 [mlx5_core]
[ 9443.594122] mlx5e_vport_rep_unload+0x15c/0x1a8 [mlx5_core]
[ 9443.594177] mlx5_eswitch_unregister_vport_reps+0x228/0x298 [mlx5_core]
[ 9443.594231] mlx5e_rep_remove+0x2c/0x38
---truncated---

Affected products

VendorProductAffectedFixed
Linux Linux 5.18 5.18.4

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 5.18.5-1 —
Debian 13 linux 5.18.5-1 —
Debian 12 linux 5.18.5-1 —
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.91.1 SUSE-SU-2025:1176-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_25 1-150500.11.3.1 SUSE-SU-2025:1241-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1

Advisories 2

References