Description
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)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
82cae269cfa953032fbb8980a7d554d60fb00b17 to < eb80003744e32a7366a523015e4acfe0a2ac7d88affected82cae269cfa953032fbb8980a7d554d60fb00b17 to < bd631e2005290a55c8edda87363bc0d594c01705affected82cae269cfa953032fbb8980a7d554d60fb00b17 to < 94fce1d3e74fe011e21f17490ba58491709fd7e5affected82cae269cfa953032fbb8980a7d554d60fb00b17 to < 66c074eab6f966fbe48a0fc4b3a45b2a2e2df527affected82cae269cfa953032fbb8980a7d554d60fb00b17 to < 64bb6000bfbdf241a6dd578199acd90321a4243eaffected82cae269cfa953032fbb8980a7d554d60fb00b17 to < 72caafbc95c5dca8266a942b8e96ad81d8d9adc7affected82cae269cfa953032fbb8980a7d554d60fb00b17 to < 2064bc663f89e61b8681c1fb9d1ce445de72063daffected
Linux Linux
Default version status: affected
5.15affected0 to < 5.15unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/eb80003744e32a7366a523015e4acfe0a2ac7d88 ↗
- https://git.kernel.org/stable/c/bd631e2005290a55c8edda87363bc0d594c01705 ↗
- https://git.kernel.org/stable/c/94fce1d3e74fe011e21f17490ba58491709fd7e5 ↗
- https://git.kernel.org/stable/c/66c074eab6f966fbe48a0fc4b3a45b2a2e2df527 ↗
- https://git.kernel.org/stable/c/64bb6000bfbdf241a6dd578199acd90321a4243e ↗
- https://git.kernel.org/stable/c/72caafbc95c5dca8266a942b8e96ad81d8d9adc7 ↗
- https://git.kernel.org/stable/c/2064bc663f89e61b8681c1fb9d1ce445de72063d ↗