CVE-2026-64444

Memory disclosure and crash via truncated association response

Published Jul 25, 2026 · Updated Jul 25, 2026

Out-of-bounds read in the Linux Kernel rtl8723bs driver allows physically proximate attackers to read memory or crash systems. The OnAssocRsp() information-element loop checks only whether the current offset precedes the frame boundary before reading the length byte, and an oversized declared length also passes truncated data to handlers. Association responses are processed before Wi-Fi key establishment, allowing physically proximate attackers to disclose adjacent kernel memory or repeatedly trigger an oops or panic.

CVSS severity8.1
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux Kernel rtl8723bs driver allows physically proximate attackers to read memory or crash systems. The OnAssocRsp() information-element loop checks only whether the current offset precedes the frame boundary before reading the length byte, and an oversized declared length also passes truncated data to handlers. Association responses are processed before Wi-Fi key establishment, allowing physically proximate attackers to disclose adjacent kernel memory or repeatedly trigger an oops or panic.

The record

CVE
CVE-2026-64444
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-125
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.12
  2. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <0406d746574e875d8778552eb674fcfbf5330bfb
  3. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <04f612dc03427e0b1ac80a2611b5ac0ba93ac446
  4. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <0970dd47726a57e52013594e9fbf667586eb3673
  5. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <1a52a05471494546f955a58e8c170c0c796c52d5
  6. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <7e7741c8315e4160aead00a60cdd6f81ab880717
  7. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <889ca6000ac7fa73457b041848fcb08e0d51b809
  8. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <f9654207e92283e0acac5d64fe5f8835383b5a23

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.12; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <0406d746574e875d8778552eb674fcfbf5330bfb; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <04f612dc03427e0b1ac80a2611b5ac0ba93ac446; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <0970dd47726a57e52013594e9fbf667586eb3673; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <1a52a05471494546f955a58e8c170c0c796c52d5; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <7e7741c8315e4160aead00a60cdd6f81ab880717; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <889ca6000ac7fa73457b041848fcb08e0d51b809; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <f9654207e92283e0acac5d64fe5f8835383b5a23

Published CVSS scores

8.1Linux kernel CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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