CVE-2025-21947— ksmbd: fix type confusion via race condition when using ipc_msg_send_request
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I. Basic Information for CVE-2025-21947
Vulnerability Information
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Vulnerability Title
ksmbd: fix type confusion via race condition when using ipc_msg_send_request
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix type confusion via race condition when using ipc_msg_send_request req->handle is allocated using ksmbd_acquire_id(&ipc_ida), based on ida_alloc. req->handle from ksmbd_ipc_login_request and FSCTL_PIPE_TRANSCEIVE ioctl can be same and it could lead to type confusion between messages, resulting in access to unexpected parts of memory after an incorrect delivery. ksmbd check type of ipc response but missing add continue to check next ipc reponse.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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ipc_msg_send_request存在竞态条件导致类型混淆。
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-2025-21947
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Same Patch Batch · Linux · 2025-04-01 · 93 CVEs total
| CVE-2025-21926 | net: gso: fix ownership in __udp_gso_segment | |
| CVE-2025-21929 | HID: intel-ish-hid: Fix use-after-free issue in hid_ishtp_cl_remove() | |
| CVE-2025-21931 | hwpoison, memory_hotplug: lock folio before unmap hwpoisoned folio | |
| CVE-2025-21934 | rapidio: fix an API misues when rio_add_net() fails | |
| CVE-2025-21935 | rapidio: add check for rio_add_net() in rio_scan_alloc_net() | |
| CVE-2025-21937 | Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name() | |
| CVE-2025-21936 | Bluetooth: Add check for mgmt_alloc_skb() in mgmt_device_connected() | |
| CVE-2025-21939 | drm/xe/hmm: Don't dereference struct page pointers without notifier lock | |
| CVE-2025-21933 | arm: pgtable: fix NULL pointer dereference issue | |
| CVE-2025-21927 | nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu() | |
| CVE-2025-21928 | HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() | |
| CVE-2025-21925 | llc: do not use skb_get() before dev_queue_xmit() | |
| CVE-2025-21924 | net: hns3: make sure ptp clock is unregister and freed if hclge_ptp_get_cycle returns an e | |
| CVE-2025-21922 | ppp: Fix KMSAN uninit-value warning with bpf | |
| CVE-2025-21923 | HID: hid-steam: Fix use-after-free when detaching device | |
| CVE-2025-21920 | vlan: enforce underlying device type | |
| CVE-2025-21921 | net: ethtool: netlink: Allow NULL nlattrs when getting a phy_device | |
| CVE-2025-21919 | sched/fair: Fix potential memory corruption in child_cfs_rq_on_list | |
| CVE-2025-21918 | usb: typec: ucsi: Fix NULL pointer access | |
| CVE-2025-21917 | usb: renesas_usbhs: Flush the notify_hotplug_work |
Showing top 20 of 93 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2025-21947
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