In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed
There is a null-ptr-deref when mount.cifs over rdma:
BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe] Read of size 8 at addr 0000000000000018 by task mount.cifs/3046
CPU: 2 PID: 3046 Comm: mount.cifs Not tainted 6.1.0-rc5+ #62 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc3 Call Trace: <TASK> dump_stack_lvl+0x34/0x44 kasan_report+0xad/0x130 rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe] execute_in_process_context+0x25/0x90 __rxe_cleanup+0x101/0x1d0 [rdma_rxe] rxe_create_qp+0x16a/0x180 [rdma_rxe] create_qp.part.0+0x27d/0x340 ib_create_qp_kernel+0x73/0x160 rdma_create_qp+0x100/0x230 _smbd_get_connection+0x752/0x20f0 smbd_get_connection+0x21/0x40 cifs_get_tcp_session+0x8ef/0xda0 mount_get_conns+0x60/0x750 cifs_mount+0x103/0xd00 cifs_smb3_do_mount+0x1dd/0xcb0 smb3_get_tree+0x1d5/0x300 vfs_get_tree+0x41/0xf0 path_mount+0x9b3/0xdd0 __x64_sys_mount+0x190/0x1d0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0
The root cause of the issue is the socket create failed in rxe_qp_init_req().
So move the reset rxe_qp_do_cleanup() after the NULL ptr check.
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 kernelUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-livepatch-4.14.304-226.531Upgrade kernel-develUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade perfUpgrade python-perf-debuginfoUpgrade kernel-livepatch-5.10.165-143.735Upgrade kernel-debuginfo-common-x86_64Upgrade python-perfUpgrade kernel-toolsUpgrade kernel-headersUpgrade perf-debuginfo | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 30, 2025 |
| Ubuntu | — | Upgrade linuxUpgrade linux-gcp-fipsUpgrade linux-azure-fipsUpgrade linux-ibmUpgrade linux-riscv-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-raspi-5.4Upgrade linux-gkeopUpgrade linux-gcpUpgrade linux-intel-iot-realtimeUpgrade linux-gcp-5.4Upgrade linux-aws-fipsUpgrade linux-ibm-5.4Upgrade linux-fipsUpgrade linux-azure-5.15Upgrade linux-hweUpgrade linux-nvidia-tegra-5.15Upgrade linux-hwe-5.4Upgrade linux-intel-iotgUpgrade linux-nvidiaUpgrade linux-hwe-5.15Upgrade linux-awsUpgrade linux-gkeUpgrade linux-oracle-5.15Upgrade linux-oracle-5.4Upgrade linux-lowlatencyUpgrade linux-gcp-4.15Upgrade linux-azure-4.15Upgrade linux-raspiUpgrade linux-kvmUpgrade linux-lowlatency-hwe-5.15Upgrade linux-realtimeUpgrade linux-azureUpgrade linux-azure-5.4Upgrade linux-bluefieldUpgrade linux-intel-iotg-5.15Upgrade linux-aws-5.4Upgrade linux-oracleUpgrade linux-aws-hweUpgrade linux-aws-5.15Upgrade linux-gcp-5.15Upgrade linux-iot | Jan 6, 2026 | Jan 2, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 30, 2025 |
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