In the Linux kernel, the following vulnerability has been resolved:
RDMA/mlx5: Fix implicit ODP use after free
Prevent double queueing of implicit ODP mr destroy work by using __xa_cmpxchg() to make sure this is the only time we are destroying this specific mr.
Without this change, we could try to invalidate this mr twice, which in turn could result in queuing a MR work destroy twice, and eventually the second work could execute after the MR was freed due to the first work, causing a user after free and trace below.
refcount_t: underflow; use-after-free. WARNING: CPU: 2 PID: 12178 at lib/refcount.c:28 refcount_warn_saturate+0x12b/0x130 Modules linked in: bonding ib_ipoib vfio_pci ip_gre geneve nf_tables ip6_gre gre ip6_tunnel tunnel6 ipip tunnel4 ib_umad rdma_ucm mlx5_vfio_pci vfio_pci_core vfio_iommu_type1 mlx5_ib vfio ib_uverbs mlx5_core iptable_raw openvswitch nsh rpcrdma ib_iser libiscsi scsi_transport_iscsi rdma_cm iw_cm ib_cm ib_core xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter rpcsec_gss_krb5 auth_rpcgss oid_registry overlay zram zsmalloc fuse [last unloaded: ib_uverbs] CPU: 2 PID: 12178 Comm: kworker/u20:5 Not tainted 6.5.0-rc1_net_next_mlx5_58c644e #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 Workqueue: events_unbound free_implicit_child_mr_work [mlx5_ib] RIP: 0010:refcount_warn_saturate+0x12b/0x130 Code: 48 c7 c7 38 95 2a 82 c6 05 bc c6 fe 00 01 e8 0c 66 aa ff 0f 0b 5b c3 48 c7 c7 e0 94 2a 82 c6 05 a7 c6 fe 00 01 e8 f5 65 aa ff <0f> 0b 5b c3 90 8b 07 3d 00 00 00 c0 74 12 83 f8 01 74 13 8d 50 ff RSP: 0018:ffff8881008e3e40 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000027 RDX: ffff88852c91b5c8 RSI: 0000000000000001 RDI: ffff88852c91b5c0 RBP: ffff8881dacd4e00 R08: 00000000ffffffff R09: 0000000000000019 R10: 000000000000072e R11: 0000000063666572 R12: ffff88812bfd9e00 R13: ffff8881c792d200 R14: ffff88810011c005 R15: ffff8881002099c0 FS: 0000000000000000(0000) GS:ffff88852c900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5694b5e000 CR3: 00000001153f6003 CR4: 0000000000370ea0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? refcount_warn_saturate+0x12b/0x130 free_implicit_child_mr_work+0x180/0x1b0 [mlx5_ib] process_one_work+0x1cc/0x3c0 worker_thread+0x218/0x3c0 kthread+0xc6/0xf0 ret_from_fork+0x1f/0x30 </TASK>
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-modules-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-debug-develUpgrade kernel-rt-64k-modulesUpgrade kernel-rt-debugUpgrade kernel-rt-modules-extraUpgrade kernel-develUpgrade kernel-64k-modules-coreUpgrade kernel-rt-coreUpgrade kernel-coreUpgrade kernel-debug-coreUpgrade kernel-devel-matchedUpgrade kernel-64kUpgrade kernel-rt-debug-coreUpgrade libperfUpgrade kernel-debug-develUpgrade kernel-tools-libsUpgrade kernel-debug-uki-virtUpgrade kernel-headersUpgrade kernel-modules-extraUpgrade kernel-cross-headersUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernelUpgrade kernel-debug-modulesUpgrade kernel-debugUpgrade kernel-zfcpdump-develUpgrade rtlaUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-64k-debug-develUpgrade kernel-64k-modulesUpgrade kernel-rt-64k-debugUpgrade kernel-rt-debug-modulesUpgrade kernel-64k-coreUpgrade kernel-64k-develUpgrade kernel-modulesUpgrade kernel-64k-debug-coreUpgrade python3-perfUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-develUpgrade kernel-rt-64k-debug-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-64k-debug-modules-coreUpgrade perfUpgrade kernel-64k-modules-extraUpgrade kernel-abi-stablelistsUpgrade kernel-rt-modules-coreUpgrade kernel-zfcpdumpUpgrade kernel-tools-libs-develUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-modules-coreUpgrade rvUpgrade kernel-64k-debug-modules-extraUpgrade kernel-rt-64k-coreUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-uki-virt-addonsUpgrade kernel-uki-virtUpgrade kernel-64k-debug-modulesUpgrade kernel-rt-modulesUpgrade kernel-64k-debugUpgrade kernel-rt-64k-modules-extraUpgrade kernel-rt-64k-debug-coreUpgrade kernel-rt-64k-develUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-toolsUpgrade kernel-rt-64kUpgrade kernel-debug-modules-extraUpgrade kernel-rtUpgrade kernel-debug-devel-matchedUpgrade kernel-docUpgrade kernel-rt-64k-modules-coreUpgrade kernel-rt-debug-modules-coreUpgrade kernel-64k-devel-matched | Nov 20, 2025 | Nov 11, 2025 |
| Debian | — | Upgrade linux | May 15, 2025 | Feb 27, 2025 |
| Oracle_linux | — | Upgrade kernel | Nov 28, 2025 | Feb 27, 2025 |
| Redhat_linux | — | Upgrade kernel-rtUpgrade kernelNo solution exists | Jul 9, 2025 | Feb 27, 2025 |
| Rocky_linux | — | Upgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-modulesUpgrade kernel-rt-coreUpgrade python3-perfUpgrade kernel-zfcpdump-develUpgrade kernel-zfcpdumpUpgrade kernel-modulesUpgrade kernel-devel-matchedUpgrade kernel-rt-debuginfoUpgrade kernel-debug-develUpgrade kernel-modules-coreUpgrade kernel-debug-devel-matchedUpgrade kernel-zfcpdump-modules-coreUpgrade perfUpgrade kernel-coreUpgrade rtlaUpgrade kernel-debug-coreUpgrade kernel-tools-libs-develUpgrade libperf-debuginfoUpgrade kernel-debugUpgrade libperfUpgrade kernel-rt-debug-develUpgrade kernel-uki-virtUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-rt-debug-modules-coreUpgrade kernelUpgrade kernel-rt-debug-coreUpgrade kernel-debug-modules-extraUpgrade kernel-debug-uki-virtUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-modulesUpgrade kernel-tools-libsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-zfcpdump-coreUpgrade kernel-rt-debug-debuginfoUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-modules-extraUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-develUpgrade kernel-modules-extraUpgrade kernel-develUpgrade python3-perf-debuginfoUpgrade kernel-rt-modules-coreUpgrade kernel-debug-modules-coreUpgrade kernel-debug-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade rvUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-debugUpgrade kernel-debuginfo-common-s390xUpgrade kernel-rt | Feb 5, 2026 | Nov 21, 2025 |
| Suse | — | Upgrade dtb-appleUpgrade dtb-freescaleUpgrade dtb-lgUpgrade kernel-obs-qaUpgrade dtb-apmUpgrade kernel-symsUpgrade dtb-broadcomUpgrade kernel-macrosUpgrade dlm-kmp-azureUpgrade kernel-debugUpgrade kernel-default-vdsoUpgrade cluster-md-kmp-azureUpgrade kernel-debug-develUpgrade kernel-64kb-optionalUpgrade gfs2-kmp-64kbUpgrade kernel-devel-rtUpgrade kernel-64kb-develUpgrade kernel-default-develUpgrade dlm-kmp-64kbUpgrade kernel-rt-livepatch-develUpgrade gfs2-kmp-rtUpgrade kernel-azure-optionalUpgrade kernel-zfcpdumpUpgrade dtb-qcomUpgrade kernel-64kbUpgrade kernel-rt_debug-vdsoUpgrade dtb-xilinxUpgrade kernel-kvmsmall-develUpgrade dtb-mediatekUpgrade kernel-source-azureUpgrade dtb-amlogicUpgrade dtb-marvellUpgrade dtb-exynosUpgrade cluster-md-kmp-defaultUpgrade kselftests-kmp-64kbUpgrade kernel-kvmsmallUpgrade kernel-default-livepatchUpgrade kernel-devel-azureUpgrade kernel-azure-vdsoUpgrade dtb-amazonUpgrade kernel-sourceUpgrade kernel-syms-rtUpgrade dtb-hisiliconUpgrade kernel-azure-develUpgrade kernel-azure-extraUpgrade kernel-rtUpgrade ocfs2-kmp-64kbUpgrade kernel-default-extraUpgrade kernel-syms-azureUpgrade kernel-rt-develUpgrade ocfs2-kmp-rtUpgrade kernel-docs-htmlUpgrade cluster-md-kmp-rtUpgrade dtb-armUpgrade kernel-develUpgrade kernel-default-optionalUpgrade kernel-rt_debugUpgrade cluster-md-kmp-64kbUpgrade kernel-docsUpgrade kernel-defaultUpgrade dtb-alteraUpgrade dtb-allwinnerUpgrade dlm-kmp-defaultUpgrade reiserfs-kmp-azureUpgrade dtb-amdUpgrade kernel-azureUpgrade dtb-sprdUpgrade reiserfs-kmp-64kbUpgrade ocfs2-kmp-azureUpgrade kernel-default-base-rebuildUpgrade kernel-debug-vdsoUpgrade dtb-caviumUpgrade dtb-renesasUpgrade reiserfs-kmp-rtUpgrade dtb-socionextUpgrade kselftests-kmp-azureUpgrade kernel-rt_debug-develUpgrade kernel-rt-extraUpgrade kernel-kvmsmall-vdsoUpgrade kernel-default-livepatch-develUpgrade kernel-default-baseUpgrade kselftests-kmp-defaultUpgrade kernel-source-vanillaUpgrade kernel-obs-buildUpgrade dtb-rockchipUpgrade dlm-kmp-rtUpgrade kernel-rt-vdsoUpgrade reiserfs-kmp-defaultUpgrade kernel-rt-optionalUpgrade ocfs2-kmp-defaultUpgrade dtb-nvidiaUpgrade kernel-source-rtUpgrade kernel-64kb-extraUpgrade gfs2-kmp-defaultUpgrade kselftests-kmp-rtUpgrade gfs2-kmp-azure | Apr 9, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1015-gkeopUpgrade linux-image-azureUpgrade linux-image-6.8.0-1031-oemUpgrade linux-image-genericUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-oem-22.04Upgrade linux-image-raspiUpgrade linux-image-6.8.0-1031-nvidia-lowlatency-64kUpgrade linux-image-raspi-6.8Upgrade linux-image-oem-24.04Upgrade linux-image-6.8.0-1029-oracleUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-2026-raspi-realtimeUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-virtual-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-64-lowlatency-64kUpgrade linux-image-6.8.0-1028-gkeUpgrade linux-image-aws-64kUpgrade linux-image-realtimeUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-gkeUpgrade linux-image-nvidiaUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1033-gcp-64kUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-64-genericUpgrade linux-image-gcp-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-1031-raspiUpgrade linux-image-6.8.0-1031-nvidia-lowlatencyUpgrade linux-image-azure-fde-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.8.0-1029-oracle-64kUpgrade linux-image-lowlatency-6.8Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-realtime-6.8.1Upgrade linux-image-oracleUpgrade linux-image-gkeopUpgrade linux-image-oracle-6.8Upgrade linux-image-generic-64kUpgrade linux-image-azure-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1032-aws-64kUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-22.04cUpgrade linux-image-aws-64k-6.8Upgrade linux-image-raspi-realtimeUpgrade linux-image-awsUpgrade linux-image-azure-nvidia-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1022-azure-nvidiaUpgrade linux-image-kvmUpgrade linux-image-oem-24.04aUpgrade linux-image-ibmUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-oem-6.8Upgrade linux-image-gcp-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-1029-ibmUpgrade linux-image-aws-6.8Upgrade linux-image-gke-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-64-lowlatencyUpgrade linux-image-oem-22.04aUpgrade linux-image-ibm-classicUpgrade linux-image-gkeop-6.8Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.1-1025-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-6.8.0-1031-nvidiaUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.8.0-1033-gcpUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-azure-nvidia-lts-24.04Upgrade linux-image-azure-fdeUpgrade linux-image-lowlatencyUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-generic-6.8Upgrade linux-image-virtualUpgrade linux-image-ibm-6.8Upgrade linux-image-6.8.0-1034-azure-fdeUpgrade linux-image-azure-nvidiaUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-gcpUpgrade linux-image-6.8.0-1032-awsUpgrade linux-image-6.8.0-1031-nvidia-64kUpgrade linux-image-6.8.0-1034-azureUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.8.0-64-generic-64k | Jun 26, 2025 | Feb 27, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | Feb 27, 2025 |
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