Answer in brief
CVE-2026-89785 records a Unknown severity vulnerability in fs/ntfs3: fix out-of-bounds read of INDEX_ROOT in reparse/objid init. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=82cae269cfa953032fbb8980a7d554d60fb00b17 <eb80003744e32a7366a523015e4acfe0a2ac7d88 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <bd631e2005290a55c8edda87363bc0d594c01705 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <94fce1d3e74fe011e21f17490ba58491709fd7e5 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <66c074eab6f966fbe48a0fc4b3a45b2a2e2df527 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <64bb6000bfbdf241a6dd578199acd90321a4243e || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <72caafbc95c5dca8266a942b8e96ad81d8d9adc7 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <2064bc663f89e61b8681c1fb9d1ce445de72063d | eb80003744e32a7366a523015e4acfe0a2ac7d88, bd631e2005290a55c8edda87363bc0d594c01705, 94fce1d3e74fe011e21f17490ba58491709fd7e5, 66c074eab6f966fbe48a0fc4b3a45b2a2e2df527, 64bb6000bfbdf241a6dd578199acd90321a4243e, 72caafbc95c5dca8266a942b8e96ad81d8d9adc7, 2064bc663f89e61b8681c1fb9d1ce445de72063d |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: fix out-of-bounds read of INDEX_ROOT in reparse/objid init ntfs_reparse_init() and ntfs_objid_init() parse the index root of the $Extend/$Reparse and $Extend/$ObjId metafiles (the INDEX_ROOT attributes named $R and $O). They read its type and rule fields through resident_data(), which does not check that the resident attribute is large enough to hold them. mi_enum_attr() accepts a resident attribute with data_off == asize and data_size == 0. For such an attribute placed last in its MFT record, resident_data() returns a pointer to the end of the record_size buffer, so reading root->type / root->rule reads past the allocation. Use resident_data_ex(attr, sizeof(struct INDEX_ROOT)) and bail out when it returns NULL, as ntfs_security_init() already does for $SDH / $SII. The attribute is only parsed while mounting a crafted image, so this needs CAP_SYS_ADMIN. BUG: KASAN: slab-out-of-bounds in ntfs_reparse_init (fs/ntfs3/fsntfs.c:2306) Read of size 4 at addr ffff88801219dc00 by task mount ntfs_reparse_init (fs/ntfs3/fsntfs.c:2306) ntfs_fill_super (fs/ntfs3/super.c:1604) get_tree_bdev_flags (fs/super.c:1703) vfs_get_tree (fs/super.c:1758) path_mount (fs/namespace.c:4131) __x64_sys_mount (fs/namespace.c:4360)
Quoted source text, attributed separately from HOL analysis.