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CVE-2026-45935— fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot

CVSS 7.8 · High EPSS 0.01% · P2

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinuxb46acd6a6a627d876898e1c84d3f84902264b445< 36c03f7f177b34d51f1cf1d2304b1074607bf4b0affected
b46acd6a6a627d876898e1c84d3f84902264b445< b271c9cb85927210b1b799e55ee7f702d12b4336affected
b46acd6a6a627d876898e1c84d3f84902264b445< a584b9d1059b29e97e17c919274e9adfb846f2a0affected
b46acd6a6a627d876898e1c84d3f84902264b445< c065541b71b79874c83d418a9acd18ad5826339baffected
b46acd6a6a627d876898e1c84d3f84902264b445< 78942172d5bff4d4afed8674abc09cc560ce44a0affected
b46acd6a6a627d876898e1c84d3f84902264b445< f3b437a4c3e022a1449658ae9f3dd34859894513affected
b46acd6a6a627d876898e1c84d3f84902264b445< b2bc7c44ed1779fc9eaab9a186db0f0d01439622affected
5.15affected
… +8 more rows
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I. Basic Information for CVE-2026-45935

Vulnerability Information
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Vulnerability Title
fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot In the 'DeleteIndexEntryRoot' case of the 'do_action' function, the entry size ('esize') is retrieved from the log record without adequate bounds checking. Specifically, the code calculates the end of the entry ('e2') using: e2 = Add2Ptr(e1, esize); It then calculates the size for memmove using 'PtrOffset(e2, ...)', which subtracts the end pointer from the buffer limit. If 'esize' is maliciously large, 'e2' exceeds the used buffer size. This results in a negative offset which, when cast to size_t for memmove, interprets as a massive unsigned integer, leading to a heap buffer overflow. This commit adds a check to ensure that the entry size ('esize') strictly fits within the remaining used space of the index header before performing memory operations.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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fs/ntfs3中DeleteIndexEntryRoot函数未对日志记录中的条目大小进行充分边界检查，可能导致堆缓冲区溢出。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux b46acd6a6a627d876898e1c84d3f84902264b445 ~ 36c03f7f177b34d51f1cf1d2304b1074607bf4b0 -
LinuxLinux 5.15 -

II. Public POCs for CVE-2026-45935

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III. Intelligence Information for CVE-2026-45935

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Patches & Fixes for CVE-2026-45935 (6)

Same Patch Batch · Linux · 2026-05-27 · 276 CVEs total

CVE-2026-460399.8 CRITICALrxgk: Fix potential integer overflow in length check
CVE-2026-458989.8 CRITICALRDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-459889.8 CRITICALrxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-459729.8 CRITICALsmb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-460439.1 CRITICALRDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-459458.8 HIGHiommu/vt-d: Fix race condition during PASID entry replacement
CVE-2026-460568.8 HIGHBluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-458438.2 HIGHslip: bound decode() reads against the compressed packet length
CVE-2026-460378.2 HIGHipv4: icmp: validate reply type before using icmp_pointers
CVE-2026-460108.1 HIGHrxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-460998.1 HIGHnet: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-460767.9 HIGHKVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-461007.8 HIGHfs: afs: revert mmap_prepare() change
CVE-2026-460117.8 HIGHmedia: mtk-jpeg: fix use-after-free in release path due to uncancelled work
CVE-2026-460157.8 HIGHtcp: call sk_data_ready() after listener migration
CVE-2026-458527.8 HIGHRDMA/rxe: Fix double free in rxe_srq_from_init
CVE-2026-458787.8 HIGHdrm/amdkfd: Fix watch_id bounds checking in debug address watch v2
CVE-2026-460367.8 HIGHvfio/cdx: Serialize VFIO_DEVICE_SET_IRQS with a per-device mutex
CVE-2026-460587.8 HIGHmedia: amphion: Fix race between m2m job_abort and device_run
CVE-2026-458617.8 HIGHgfs2: Fix slab-use-after-free in qd_put

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-45935

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