In the Linux kernel, the following vulnerability has been resolved: ntfs: bound $AttrDef table walk to the loaded table size ntfs_attr_find_in_attrdef() walks the in-memory $AttrDef table, but the loop condition bounds only the start of each entry, not the whole entry: for (ad = vol->attrdef; (u8 *)ad - (u8 *)vol->attrdef < vol->attrdef_size && ad->type; ++ad) struct attr_def is 160 bytes; the guard reads ad->type at offset 128 and the loop body reads further fields. vol->attrdef is kvzalloc(i_size), where i_size is the on-disk $AttrDef data size, checked in load_and_init_attrdef() only as 0 < i_size <= 0x7fffffff. A volume whose $AttrDef data size is smaller than one entry (e.g. 120 bytes) makes the read of ad->type run past the allocation. Creating a file reaches this through ntfs_attr_size_bounds_check() and reads out of bounds: BUG: KASAN: slab-out-of-bounds in ntfs_attr_find_in_attrdef+0x66/0xa0 Read of size 4 at addr ffff888005833280 by task init/1 ntfs_attr_find_in_attrdef ntfs_attr_size_bounds_check ntfs_attr_can_be_non_resident ntfs_attr_add Require the whole entry to lie within attrdef_size in the loop guard, and reject at mount a $AttrDef too small to hold one attr_def entry.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - In the Linux kernel, the following vulnerability has been resolved: ntfs: bound $AttrDef table walk to the
    loaded table size ntfs_attr_find_in_attrdef() walks the in-memory $AttrDef table, but the loop condition
    bounds only the start of each entry, not the whole entry: for (ad = vol->attrdef; (u8 *)ad - (u8
    *)vol->attrdef < vol->attrdef_size && ad->type; ++ad) struct attr_def is 160 bytes; the guard reads
    ad->type at offset 128 and the loop body reads further fields. vol->attrdef is kvzalloc(i_size), where
    i_size is the on-disk $AttrDef data size, checked in load_and_init_attrdef() only as 0 < i_size <=
    0x7fffffff. A volume whose $AttrDef data size is smaller than one entry (e.g. 120 bytes) makes the read of
    ad->type run past the allocation. Creating a file reaches this through ntfs_attr_size_bounds_check() and
    reads out of bounds: BUG: KASAN: slab-out-of-bounds in ntfs_attr_find_in_attrdef+0x66/0xa0 Read of size 4
    at addr ffff888005833280 by task init/1 ntfs_attr_find_in_attrdef ntfs_attr_size_bounds_check
    ntfs_attr_can_be_non_resident ntfs_attr_add Require the whole entry to lie within attrdef_size in the loop
    guard, and reject at mount a $AttrDef too small to hold one attr_def entry. (CVE-2026-98136)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: ntfs: bound $AttrDef table walk to the     loaded table size ntfs_attr_find_in_attrdef() walks the in-memory $AttrDef table, but the loop condition     bounds only the start of each entry, not the whole entry: for (ad = vol->attrdef; (u8 *)ad - (u8
    *)vol->attrdef < vol->attrdef_size && ad->type; ++ad) struct attr_def is 160 bytes; the guard reads     ad->type at offset 128 and the loop body reads further fields. vol->attrdef is kvzalloc(i_size), where     i_size is the on-disk $AttrDef data size, checked in load_and_init_attrdef() only as 0 < i_size <=     0x7fffffff. A volume whose $AttrDef data size is smaller than one entry (e.g. 120 bytes) makes the read of     ad->type run past the allocation. Creating a file reaches this through ntfs_attr_size_bounds_check() and     reads out of bounds: BUG: KASAN: slab-out-of-bounds in ntfs_attr_find_in_attrdef+0x66/0xa0 Read of size 4     at addr ffff888005833280 by task init/1 ntfs_attr_find_in_attrdef ntfs_attr_size_bounds_check     ntfs_attr_can_be_non_resident ntfs_attr_add Require the whole entry to lie within attrdef_size in the loop     guard, and reject at mount a $AttrDef too small to hold one attr_def entry. (CVE-2026-98136)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
474654	Chainguard: linux-desktop-7.2-bootc: security update to 7.2.7-r0	Tenable Cloud Security	Chainguard Local Security Checks	Local	high
474654	Chainguard: linux-desktop-7.2-bootc: security update to 7.2.7-r0	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	high
350420	Linux Distros Unpatched Vulnerability : CVE-2026-98136	Nessus	Misc.	Local	high

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CVE-2026-98136

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Tenable Plugins

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