Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-99108— ntfs: fix FITRIM range alignment

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.

在 Linux 内核中，以下漏洞已得到修复： ntfs：修复 FITRIM 范围对齐问题 ntfs_trim_fs() 函数会将空闲区域的起始位置向上对齐到设备的丢弃粒度（discard granularity），但计算丢弃长度时却将原始空闲区域长度向下对齐。当空闲区域的起始位置未与丢弃粒度对齐时，将计算出的长度加到对齐后的起始位置上，会导致丢弃范围超出空闲区域，进而覆盖已分配的簇。 例如：在簇大小为 4 KiB、丢弃粒度为 32 KiB 的情况下，空闲区域 [4 KiB, 36 KiB) 会被转换为丢弃范围 [3

AI Predicted 5.5 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1490 · Inhibit System Recovery

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 11ccc9107dc460de28af90fac1f42404d9802735< 5e87da8ba8d3d647d89c754912e45c1f1a3bfc2e affected
11ccc9107dc460de28af90fac1f42404d9802735< 03c6ecc4b4b13a3901f207152451fdd2d82e40c4 affected
7.1 affected
< 7.1 unaffected
7.2.13≤ 7.2.* unaffected
7.3≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-99108

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
ntfs: fix FITRIM range alignment
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ntfs: fix FITRIM range alignment ntfs_trim_fs() aligns the start of a free extent up to the device discard granularity, but derives the discard length by aligning the original extent length down. When the free extent start is not discard-aligned, adding that length to the aligned start can extend the discard past the free extent and into allocated clusters. For example, with 4 KiB clusters and 32 KiB discard granularity, the free extent [4 KiB, 36 KiB) becomes the discard range [32 KiB, 64 KiB), so 28 KiB beyond the free extent may be discarded. Align the absolute end of the free extent down and derive the length from the two aligned endpoints. Skip extents that contain no full discard unit. Reproduced with a 4 KiB-cluster NTFS filesystem on scsi_debug configured for 32 KiB discard granularity and read-zero-after-trim. Before this change, FITRIM zeroed seven allocated 4 KiB clusters following an unaligned 32 KiB hole. With this change, the same data remains intact across FITRIM and remount.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 11ccc9107dc460de28af90fac1f42404d9802735 ~ 5e87da8ba8d3d647d89c754912e45c1f1a3bfc2e -
Linux Linux 7.1 -

II. Public POCs for CVE-2026-99108

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-99108

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-99108 (1)

Same Patch Batch · Linux · 2026-10-28 · 117 CVEs total

CVE-2026-99144 sched_ext: Fix use-after-free of a destroyed user DSQ by a deferred reenqueue
CVE-2026-99130 io_uring/cancel: don't spin on local work the task can't run
CVE-2026-99131 xfs: fix capability check in xfs
CVE-2026-99133 net/iucv: fix the recvmsg window update
CVE-2026-99132 xfs: don't hold buffer locks across sync transaction commit in xfs_sync_sb_buf
CVE-2026-99134 mac802154: fix data race and NULL deref on local->assoc_dev
CVE-2026-99135 dm-integrity: fix infinite loop on discard with large tag size
CVE-2026-99137 cifs: don't update i_size in cifs_do_truncate without a cached handle
CVE-2026-99136 dm-crypt: fix a tiny race condition in crypt_dec_pending
CVE-2026-99138 tcp: fix use-after-free in do_tcp_getsockopt(TCP_CC_INFO)
CVE-2026-99140 tracing: Fix hist trigger timestamps for buffered events
CVE-2026-99139 tcp: fix use-after-free in do_tcp_getsockopt(TCP_CONGESTION)
CVE-2026-99141 tracing: Fix crash in print_graph_function_event()
CVE-2026-99142 tracing: Check operator stack capacity before pushing
CVE-2026-99143 tracing: Keep the predicate limit separate from program capacity
CVE-2026-99156 scsi: st: Fix use-after-free race between st_remove() and st_open()
CVE-2026-99153 scsi: libiscsi: Validate the ITT reflected in a Reject PDU
CVE-2026-99152 scsi: libiscsi: Validate the task named by a management response
CVE-2026-99154 scsi: libiscsi: Reject a negative task index from parse_pdu_itt
CVE-2026-99151 drm/amd/display: Fix NULL sink dereference in USB4 bandwidth functions

Showing top 20 of 117 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux