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 ...
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade python-perfUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-4.14.285-215.501Upgrade kernel-develUpgrade kernel-livepatch-5.10.126-117.518Upgrade bpftoolUpgrade kernel-tools-develUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernel-toolsUpgrade python-perf-debuginfoUpgrade perf-debuginfo | May 21, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-tools-libsUpgrade bpftoolUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade python3-perf | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernelUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernel-tools-libs | Jun 11, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-hweUpgrade linux-intel-iotgUpgrade linux-azure-5.15Upgrade linux-gkeopUpgrade linux-riscv-5.15Upgrade linux-azure-fde-5.15Upgrade linux-ibmUpgrade linux-azure-fipsUpgrade linux-gcp-5.4Upgrade linux-ibm-5.4Upgrade linux-raspi-5.4Upgrade linux-hwe-5.4Upgrade linux-awsUpgrade linuxUpgrade linux-gcpUpgrade linux-gcp-fipsUpgrade linux-aws-fipsUpgrade linux-fipsUpgrade linux-realtimeUpgrade linux-raspiUpgrade linux-iotUpgrade linux-oracleUpgrade linux-aws-hweUpgrade linux-lowlatency-hwe-5.15Upgrade linux-gcp-4.15Upgrade linux-gcp-5.15Upgrade linux-aws-5.4Upgrade linux-lowlatencyUpgrade linux-azure-5.4Upgrade linux-aws-5.15Upgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-oracle-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-kvmUpgrade linux-oracle-5.15Upgrade linux-bluefieldUpgrade linux-nvidiaUpgrade linux-azure-4.15Upgrade linux-gke | 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 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub