CVE-2026-74650

Adjacent out-of-bounds read via short WMM element

Published Aug 22, 2026 · Updated Aug 22, 2026

Out-of-bounds read in rtl8723bs in affected Linux kernels beginning with 4.12 allows physically proximate attackers to trigger a memory over-read. WMM_param_handler() copies and compares 18 bytes at pIE->data + 6 after callers validate only a shorter WMM OUI, without requiring the 24-byte WMM element length. Reachability requires the rtl8723bs driver to process an association response from an attacker-controlled wireless access point.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
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 rtl8723bs in affected Linux kernels beginning with 4.12 allows physically proximate attackers to trigger a memory over-read. WMM_param_handler() copies and compares 18 bytes at pIE->data + 6 after callers validate only a shorter WMM OUI, without requiring the 24-byte WMM element length. Reachability requires the rtl8723bs driver to process an association response from an attacker-controlled wireless access point.

The record

CVE
CVE-2026-74650
Published
Aug 22, 2026
Updated
Aug 22, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 22, 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 <1158b9931207392d6dd136aa0c4be18893b50fa1
  3. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <2bee6f7a0f0125238951e31da2e96d06fe359043
  4. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <6cdca4c8b64c15a3ab9ad7a85f482e9519eadf93
  5. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ae21407350151bddfd4fea7aa39bd0643c0ca9d3
  6. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ce2399717de242344880044b91a20a712644fdfb
  7. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <e429c6dfd5d2324cd866daaf4c29d5cfe4dea0e4
  8. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <e5b7610008f4e6a80c8b071aa77ddbd5e17ea472

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <1158b9931207392d6dd136aa0c4be18893b50fa1; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <2bee6f7a0f0125238951e31da2e96d06fe359043; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <6cdca4c8b64c15a3ab9ad7a85f482e9519eadf93; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ae21407350151bddfd4fea7aa39bd0643c0ca9d3; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ce2399717de242344880044b91a20a712644fdfb; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <e429c6dfd5d2324cd866daaf4c29d5cfe4dea0e4; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <e5b7610008f4e6a80c8b071aa77ddbd5e17ea472

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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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