CyberSecBulletin
CVE-2026-98111NVD status: Analyzed

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2026-98111 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions e9cf7f175c00d36b060828f4eac8d2e246ee079b, 83499ac3ca62e43ed40f7574b13ed398a6891511, 76948d207d0978a613ce06a05cba07284a5578a7 as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.13% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Linux to e9cf7f175c00d36b060828f4eac8d2e246ee079b or 83499ac3ca62e43ed40f7574b13ed398a6891511 or 76948d207d0978a613ce06a05cba07284a5578a7 or 5ec43df2830b73e004147303bf7914ca884d6770, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 6.6.158 or 6.12.111 or 6.18.53 or 7.2.7, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux57375beef71af9f245e88357fa71d9600650cb7d up to, but not including, e9cf7f175c00d36b060828f4eac8d2e246ee079b; 57375beef71af9f245e88357fa71d9600650cb7d up to, but not including, 83499ac3ca62e43ed40f7574b13ed398a6891511; 57375beef71af9f245e88357fa71d9600650cb7d up to, but not including, 76948d207d0978a613ce06a05cba07284a5578a7; 57375beef71af9f245e88357fa71d9600650cb7d up to, but not including, 5ec43df2830b73e004147303bf7914ca884d6770; 57375beef71af9f245e88357fa71d9600650cb7d up to, but not including, a086c0892969bf8a0151b0f12bd14a68827c88b2; 5.10e9cf7f175c00d36b060828f4eac8d2e246ee079b, 83499ac3ca62e43ed40f7574b13ed398a6891511, 76948d207d0978a613ce06a05cba07284a5578a7, 5ec43df2830b73e004147303bf7914ca884d6770, a086c0892969bf8a0151b0f12bd14a68827c88b2
LinuxLinux Kernel5.10 up to, but not including, 6.6.158; 6.7 up to, but not including, 6.12.111; 6.13 up to, but not including, 6.18.53; 6.19 up to, but not including, 7.2.7; 7.36.6.158, 6.12.111, 6.18.53, 7.2.7

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.

Official description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: validate version TLV value lengths btintel_parse_version_tlv() verifies that a complete TLV is present in the response, but it does not ensure that the value is long enough for the specific TLV type. A short value can therefore cause an out-of-bounds read through get_unaligned_le16(), get_unaligned_le32(), or memcpy(). Reject values shorter than the minimum required by each known TLV type. Also reject responses that do not contain the Command Complete Status field.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

How developers prevent this class of flaw

  • Use a language that provides appropriate memory abstractions.

More Out-of-bounds Read vulnerabilities (CWE-125)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Recent Out-of-bounds Read vulnerabilities

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