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In the Linux kernel, the following vulnerability has been resolved:
xprtrdma: treat all calls not a bcall when bc_serv is NULL
When a rdma server returns a fault format reply, nfs v3 client may treats it as a bcall when bc service is not exist.
The debug message at rpcrdma_bc_receive_call are,
[56579.837169] RPC: rpcrdma_bc_receive_call: callback XID 00000001, length=20 [56579.837174] RPC: rpcrdma_bc_receive_call: 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04
After that, rpcrdma_bc_receive_call will meets NULL pointer as,
[ 226.057890] BUG: unable to handle kernel NULL pointer dereference at 00000000000000c8 ... [ 226.058704] RIP: 0010:_raw_spin_lock+0xc/0x20 ... [ 226.059732] Call Trace: [ 226.059878] rpcrdma_bc_receive_call+0x138/0x327 [rpcrdma] [ 226.060011] __ib_process_cq+0x89/0x170 [ib_core] [ 226.060092] ib_cq_poll_work+0x26/0x80 [ib_core] [ 226.060257] process_one_work+0x1a7/0x360 [ 226.060367] ? create_worker+0x1a0/0x1a0 [ 226.060440] worker_thread+0x30/0x390 [ 226.060500] ? create_worker+0x1a0/0x1a0 [ 226.060574] kthread+0x116/0x130 [ 226.060661] ? kthread_flush_work_fn+0x10/0x10 [ 226.060724] ret_from_fork+0x35/0x40 ...
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade perfUpgrade kernel-tools-develUpgrade kernelUpgrade kernel-livepatch-4.14.285-215.501Upgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade kernel-livepatch-5.10.126-117.518Upgrade bpftool | May 21, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade python3-perfUpgrade kernelUpgrade kernel-tools-libsUpgrade bpftool | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernelUpgrade kernel-tools-libs | Jun 11, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-raspi-5.4Upgrade linux-gcpUpgrade linux-ibm-5.4Upgrade linux-fipsUpgrade linux-azure-fipsUpgrade linux-riscv-5.15Upgrade linux-hwe-5.4Upgrade linux-intel-iotgUpgrade linux-azure-5.15Upgrade linux-hweUpgrade linux-gcp-fipsUpgrade linux-aws-fipsUpgrade linux-gcp-5.4Upgrade linux-azure-fde-5.15Upgrade linux-gkeopUpgrade linux-ibmUpgrade linuxUpgrade linux-awsUpgrade linux-aws-5.15Upgrade linux-azureUpgrade linux-raspiUpgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-5.4Upgrade linux-realtimeUpgrade linux-gcp-5.15Upgrade linux-nvidiaUpgrade linux-lowlatencyUpgrade linux-azure-5.4Upgrade linux-oracleUpgrade linux-azure-4.15Upgrade linux-aws-hweUpgrade linux-iotUpgrade linux-gkeUpgrade linux-azure-fdeUpgrade linux-oracle-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-oracle-5.15Upgrade linux-gcp-4.15Upgrade linux-kvmUpgrade linux-bluefieldUpgrade linux-hwe-5.15 | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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