CVE-2024-47692— nfsd: return -EINVAL when namelen is 0
Possible ATT&CK Techniques 1AI
T1205 · Traffic SignalingAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 74725959c33c14114fdce1e36e3504d106584d53< 6d07040ae5c2214e39c7444d898039c9e655a79a | affected |
74725959c33c14114fdce1e36e3504d106584d53< 0f1d007bbea38a61cf9c5392708dc70ae9d84a3d | affected | ||
74725959c33c14114fdce1e36e3504d106584d53< b7b7a8df41ef18862dd6b22289fb46c2c12398af | affected | ||
74725959c33c14114fdce1e36e3504d106584d53< 84a563d136faf514fdad1ade28d7a142fd313cb8 | affected | ||
74725959c33c14114fdce1e36e3504d106584d53< 318f70857caab3da9a6ada9bc8c1f4f7591b695e | affected | ||
74725959c33c14114fdce1e36e3504d106584d53< 766d5fbd78f7a52b3888449a0358760477b74602 | affected | ||
74725959c33c14114fdce1e36e3504d106584d53< 1ff8be8d008b9ddc8e7043fbddd37d5d451b271b | affected | ||
74725959c33c14114fdce1e36e3504d106584d53< 22451a16b7ab7debefce660672566be887db1637 | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2024-47692
Vulnerability Information
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Vulnerability Title
nfsd: return -EINVAL when namelen is 0
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于nfsd子系统namelen为0时未返回错误的问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-47692
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2024-47692 (1)
Same Patch Batch · Linux · 2024-10-21 · 372 CVEs total
| CVE-2024-50019 | kthread: unpark only parked kthread | |
| CVE-2024-50030 | drm/xe/ct: prevent UAF in send_recv() | |
| CVE-2024-50028 | thermal: core: Reference count the zone in thermal_zone_get_by_id() | |
| CVE-2024-50029 | Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync | |
| CVE-2024-50027 | thermal: core: Free tzp copy along with the thermal zone | |
| CVE-2024-50025 | scsi: fnic: Move flush_work initialization out of if block | |
| CVE-2024-50026 | scsi: wd33c93: Don't use stale scsi_pointer value | |
| CVE-2024-50023 | net: phy: Remove LED entry from LEDs list on unregister | |
| CVE-2024-50024 | net: Fix an unsafe loop on the list | |
| CVE-2024-50022 | device-dax: correct pgoff align in dax_set_mapping() | |
| CVE-2024-50021 | ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins() | |
| CVE-2024-50020 | ice: Fix improper handling of refcount in ice_sriov_set_msix_vec_count() | |
| CVE-2024-50011 | ASoC: Intel: soc-acpi-intel-rpl-match: add missing empty item | |
| CVE-2024-50006 | ext4: fix i_data_sem unlock order in ext4_ind_migrate() | |
| CVE-2024-50007 | ALSA: asihpi: Fix potential OOB array access | |
| CVE-2024-50008 | wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_cmd_802_11_scan_ext() | |
| CVE-2024-50009 | cpufreq: amd-pstate: add check for cpufreq_cpu_get's return value | |
| CVE-2024-50010 | exec: don't WARN for racy path_noexec check | |
| CVE-2024-50014 | ext4: fix access to uninitialised lock in fc replay path | |
| CVE-2024-50017 | x86/mm/ident_map: Use gbpages only where full GB page should be mapped. |
Showing top 20 of 372 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53365
vsock/virtio: fix zerocopy completion for multi-skb sends - CVE-2026-53364
Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate - CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc().
Same vendor: Linux
- CVE-2026-53365
vsock/virtio: fix zerocopy completion for multi-skb sends - CVE-2026-53364
Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate - CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path - CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc().
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