In the Linux kernel, the following vulnerability has been resolved:
nfsd: return -EINVAL when namelen is 0
When we have a corrupted main.sqlite in /var/lib/nfs/nfsdcld/, it may result in namelen being 0, which will cause memdup_user() to return ZERO_SIZE_PTR. When we access the name.data that has been assigned the value of ZERO_SIZE_PTR in nfs4_client_to_reclaim(), null pointer dereference is triggered.
[ T1205] ================================================================== [ T1205] BUG: KASAN: null-ptr-deref in nfs4_client_to_reclaim+0xe9/0x260 [ T1205] Read of size 1 at addr 0000000000000010 by task nfsdcld/1205 [ T1205] [ T1205] CPU: 11 PID: 1205 Comm: nfsdcld Not tainted 5.10.0-00003-g2c1423731b8d #406 [ T1205] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 04/01/2014 [ T1205] Call Trace: [ T1205] dump_stack+0x9a/0xd0 [ T1205] ? nfs4_client_to_reclaim+0xe9/0x260 [ T1205] __kasan_report.cold+0x34/0x84 [ T1205] ? nfs4_client_to_reclaim+0xe9/0x260 [ T1205] kasan_report+0x3a/0x50 [ T1205] nfs4_client_to_reclaim+0xe9/0x260 [ T1205] ? nfsd4_release_lockowner+0x410/0x410 [ T1205] cld_pipe_downcall+0x5ca/0x760 [ T1205] ? nfsd4_cld_tracking_exit+0x1d0/0x1d0 [ T1205] ? down_write_killable_nested+0x170/0x170 [ T1205] ? avc_policy_seqno+0x28/0x40 [ T1205] ? selinux_file_permission+0x1b4/0x1e0 [ T1205] rpc_pipe_write+0x84/0xb0 [ T1205] vfs_write+0x143/0x520 [ T1205] ksys_write+0xc9/0x170 [ T1205] ? __ia32_sys_read+0x50/0x50 [ T1205] ? ktime_get_coarse_real_ts64+0xfe/0x110 [ T1205] ? ktime_get_coarse_real_ts64+0xa2/0x110 [ T1205] do_syscall_64+0x33/0x40 [ T1205] entry_SYSCALL_64_after_hwframe+0x67/0xd1 [ T1205] RIP: 0033:0x7fdbdb761bc7 [ T1205] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 514 [ T1205] RSP: 002b:00007fff8c4b7248 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ T1205] RAX: ffffffffffffffda RBX: 000000000000042b RCX: 00007fdbdb761bc7 [ T1205] RDX: 000000000000042b RSI: 00007fff8c4b75f0 RDI: 0000000000000008 [ T1205] RBP: 00007fdbdb761bb0 R08: 0000000000000000 R09: 0000000000000001 [ T1205] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000042b [ T1205] R13: 0000000000000008 R14: 00007fff8c4b75f0 R15: 0000000000000000 [ T1205] ==================================================================
Fix it by checking namelen.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/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 perf-debuginfoUpgrade kernel-develUpgrade perfUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade python-perfUpgrade kernel-debuginfoUpgrade kernel-headersUpgrade kernelUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-5.15.168-114.166Upgrade python-perf-debuginfoUpgrade kernel-livepatch-5.10.227-219.884Upgrade kernel-debuginfo-common-x86_64 | Mar 14, 2025 | Oct 21, 2024 |
| Amazon_linux_2023 | — | Upgrade kernel-libbpf-staticUpgrade kernel-tools-develUpgrade python3-perfUpgrade kernel-libbpf-develUpgrade kernel-develUpgrade perfUpgrade kernelUpgrade kernel-modules-extra-commonUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade kernel-modules-extraUpgrade perf-debuginfoUpgrade kernel-livepatch-6.1.115-126.197Upgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-libbpf | Mar 27, 2025 | Oct 21, 2024 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Nov 11, 2024 | Oct 21, 2024 |
| Huawei Euleros 2_0_sp11 | — | Upgrade python3-perfUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernel | Feb 11, 2025 | Oct 21, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-tools-libs | Feb 11, 2025 | Oct 21, 2024 |
| Oracle_linux | — | Upgrade kernel-uek | Dec 17, 2024 | Oct 21, 2024 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | May 15, 2025 | Oct 21, 2024 |
| Ubuntu | — | Upgrade linux-image-azure-fdeUpgrade linux-image-5.4.0-1086-ibmUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-6.8.0-1025-azure-fdeUpgrade linux-image-oem-22.04cUpgrade linux-image-5.4.0-1138-oracleUpgrade linux-image-5.15.0-127-genericUpgrade linux-image-5.15.0-127-lowlatency-64kUpgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-virtual-hwe-18.04Upgrade linux-image-6.11.0-1015-oemUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-6.8.0-54-lowlatencyUpgrade linux-image-oem-osp1Upgrade linux-image-6.8.0-1019-raspiUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-1070-kvmUpgrade linux-image-ibm-classicUpgrade linux-image-azureUpgrade linux-image-5.15.0-127-lowlatencyUpgrade linux-image-aws-lts-20.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1019-gkeUpgrade linux-image-gcp-64kUpgrade linux-image-aws-lts-24.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-oem-22.04bUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-awsUpgrade linux-image-5.15.0-127-generic-64kUpgrade linux-image-intel-iotgUpgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-kvmUpgrade linux-image-5.4.0-1140-awsUpgrade linux-image-6.8.0-1020-oracleUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-raspi-hwe-18.04Upgrade linux-image-oem-24.04aUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-virtualUpgrade linux-image-6.8.0-1024-oemUpgrade linux-image-5.15.0-1056-gkeopUpgrade linux-image-6.8.0-1022-nvidia-64kUpgrade linux-image-raspiUpgrade linux-image-oem-20.04dUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.8.0-54-lowlatency-64kUpgrade linux-image-raspi2Upgrade linux-image-oem-22.04dUpgrade linux-image-5.4.0-1142-awsUpgrade linux-image-5.4.0-208-genericUpgrade linux-image-gcpUpgrade linux-image-5.15.0-1068-nvidia-lowlatencyUpgrade linux-image-6.8.0-1024-gcpUpgrade linux-image-azure-lts-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-generic-hwe-18.04Upgrade linux-image-6.8.0-1022-ibmUpgrade linux-image-6.8.0-1006-gkeopUpgrade linux-image-nvidia-64kUpgrade linux-image-5.15.0-1066-raspiUpgrade linux-image-oem-20.04cUpgrade linux-image-realtimeUpgrade linux-image-oem-24.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-aws-lts-22.04Upgrade linux-image-5.4.0-1048-iotUpgrade linux-image-5.4.0-1143-gcpUpgrade linux-image-6.8.0-1022-nvidia-lowlatency-64kUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-azure-cvmUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1024-gcp-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-5.4.0-1116-fipsUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-5.15.0-1039-xilinx-zynqmpUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-nvidiaUpgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-54-generic-64kUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-6.8.0-54-genericUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-oem-20.04bUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-ibmUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-1022-nvidia-lowlatencyUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-5.15.0-1071-oracleUpgrade linux-image-5.15.0-1071-intel-iotgUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-5.15.0-1072-gcpUpgrade linux-image-gkeUpgrade linux-image-bluefieldUpgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-5.15.0-1066-ibmUpgrade linux-image-6.8.0-57-generic-64kUpgrade linux-image-6.8.0-1025-azureUpgrade linux-image-6.8.0-1020-oracle-64kUpgrade linux-image-5.4.0-208-lowlatencyUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-generic-64kUpgrade linux-image-oem-20.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-5.4.0-208-generic-lpaeUpgrade linux-image-oem-22.04Upgrade linux-image-6.8.0-57-genericUpgrade linux-image-5.4.0-1129-raspiUpgrade linux-image-azure-lts-22.04Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-6.8.0-1023-awsUpgrade linux-image-5.4.0-1058-xilinx-zynqmpUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-oemUpgrade linux-image-6.8.0-1022-nvidiaUpgrade linux-image-5.15.0-127-generic-lpaeUpgrade linux-image-5.4.0-1127-kvmUpgrade linux-image-fipsUpgrade linux-image-5.15.0-1078-azureUpgrade linux-image-5.15.0-1068-nvidiaUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-5.15.0-1070-gkeUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-azure-nvidiaUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-azure-lts-20.04Upgrade linux-image-5.15.0-1073-awsUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-gkeopUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-oracleUpgrade linux-image-oem-22.04aUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-generic-lpaeUpgrade linux-image-5.4.0-1099-bluefieldUpgrade linux-image-gke-5.15Upgrade linux-image-intelUpgrade linux-image-5.4.0-1145-azureUpgrade linux-image-lowlatencyUpgrade linux-image-gkeop-6.8Upgrade linux-image-oem-24.04bUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic | Dec 18, 2024 | Oct 21, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2025 | Oct 21, 2024 |
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