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CVE-2026-45864— fs/ntfs3: prevent infinite loops caused by the next valid being the same

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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ntfs3文件系统中处理有效范围时若有效值始终相同可能触发无限循环，导致系统挂起。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.16% · P6

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 4342306f0f0d5ff4315a204d315c1b51b914fca5< 50c822fcb36768f1fb356f05b02a2248ef81936d affected
4342306f0f0d5ff4315a204d315c1b51b914fca5< 6d93239b4fc479f7c0a412dd196ec0ca2672d14a affected
4342306f0f0d5ff4315a204d315c1b51b914fca5< 71c8b966ec56e13c02388c1312910588bb49be7a affected
4342306f0f0d5ff4315a204d315c1b51b914fca5< b97e371e5d1c13d722335d46eb8bc1a22b272a0e affected
4342306f0f0d5ff4315a204d315c1b51b914fca5< 4bf3bafb8e0635ed93e3cd4156dcbcc0fb960cb4 affected
4342306f0f0d5ff4315a204d315c1b51b914fca5< a47a2bb9aa6455d5cee1045814a60c749309c92b affected
4342306f0f0d5ff4315a204d315c1b51b914fca5< 27b75ca4e51e3e4554dc85dbf1a0246c66106fd3 affected
5.15 affected
… +8 more rows
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I. Basic Information for CVE-2026-45864

Vulnerability Information
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Vulnerability Title
fs/ntfs3: prevent infinite loops caused by the next valid being the same
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: prevent infinite loops caused by the next valid being the same When processing valid within the range [valid : pos), if valid cannot be retrieved correctly, for example, if the retrieved valid value is always the same, this can trigger a potential infinite loop, similar to the hung problem reported by syzbot [1]. Adding a check for the valid value within the loop body, and terminating the loop and returning -EINVAL if the value is the same as the current value, can prevent this. [1] INFO: task syz.4.21:6056 blocked for more than 143 seconds. Call Trace: rwbase_write_lock+0x14f/0x750 kernel/locking/rwbase_rt.c:244 inode_lock include/linux/fs.h:1027 [inline] ntfs_file_write_iter+0xe6/0x870 fs/ntfs3/file.c:1284
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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ntfs3文件系统中处理有效范围时若有效值始终相同可能触发无限循环，导致系统挂起。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 4342306f0f0d5ff4315a204d315c1b51b914fca5 ~ 50c822fcb36768f1fb356f05b02a2248ef81936d -
Linux Linux 5.15 -

II. Public POCs for CVE-2026-45864

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III. Intelligence Information for CVE-2026-45864

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Patches & Fixes for CVE-2026-45864 (7)

Same Patch Batch · Linux · 2026-05-27 · 275 CVEs total

CVE-2026-46039 9.8 CRITICAL rxgk: Fix potential integer overflow in length check
CVE-2026-45898 9.8 CRITICAL RDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-45972 9.8 CRITICAL smb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-45988 9.8 CRITICAL rxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-46043 9.1 CRITICAL RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-45945 8.8 HIGH iommu/vt-d: Fix race condition during PASID entry replacement
CVE-2026-46056 8.8 HIGH Bluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2025-71311 8.2 HIGH fs/ntfs3: Initialize new folios before use
CVE-2026-46037 8.2 HIGH ipv4: icmp: validate reply type before using icmp_pointers
CVE-2026-45843 8.2 HIGH slip: bound decode() reads against the compressed packet length
CVE-2026-46010 8.1 HIGH rxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-46099 8.1 HIGH net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-46076 7.9 HIGH KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-45910 7.8 HIGH RDMA/rxe: Fix race condition in QP timer handlers
CVE-2026-45862 7.8 HIGH iommu/vt-d: Flush cache for PASID table before using it
CVE-2026-45956 7.8 HIGH drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl()
CVE-2026-46036 7.8 HIGH vfio/cdx: Serialize VFIO_DEVICE_SET_IRQS with a per-device mutex
CVE-2026-46100 7.8 HIGH fs: afs: revert mmap_prepare() change
CVE-2026-45894 7.8 HIGH iommu/vt-d: Clear Present bit before tearing down PASID entry
CVE-2026-45933 7.8 HIGH bpf: Preserve id of register in sync_linked_regs()

Showing top 20 of 275 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-45864

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