CVE-2024-35862Network attack vector

Kernel corruption via exiting SMB session access

Published May 19, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel SMB client from 5.12 allows remote attackers to crash or corrupt the kernel via a crafted SMB response. The smb2_is_network_name_deleted() path traverses server sessions and accesses an entry being torn down instead of skipping SES_EXITING sessions. Exploitation requires an active SMB client session and a network-name-deleted response timed with session teardown; impact remains within the affected host kernel.

CVSS severity9.8
Critical
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel SMB client from 5.12 allows remote attackers to crash or corrupt the kernel via a crafted SMB response. The smb2_is_network_name_deleted() path traverses server sessions and accesses an entry being torn down instead of skipping SES_EXITING sessions. Exploitation requires an active SMB client session and a network-name-deleted response timed with session teardown; impact remains within the affected host kernel.

The record

CVE
CVE-2024-35862
Published
May 19, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.12
  2. Affected versionversion=9e550b085206544bd03a8b1dd58a5414e9508351 <63981561ffd2d4987807df4126f96a11e18b0c1d
  3. Affected versionversion=9e550b085206544bd03a8b1dd58a5414e9508351 <aa582b33f94453fdeaff1e7d0aa252c505975e01
  4. Affected versionversion=9e550b085206544bd03a8b1dd58a5414e9508351 <d919b6ea15ffa56fbafef4a1d92f47aeda9af645
  5. Affected versionversion=9e550b085206544bd03a8b1dd58a5414e9508351 <f9414004798d9742c1af23a1d839fe6a9503751c

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.12; version=9e550b085206544bd03a8b1dd58a5414e9508351 <63981561ffd2d4987807df4126f96a11e18b0c1d; version=9e550b085206544bd03a8b1dd58a5414e9508351 <aa582b33f94453fdeaff1e7d0aa252c505975e01; version=9e550b085206544bd03a8b1dd58a5414e9508351 <d919b6ea15ffa56fbafef4a1d92f47aeda9af645; version=9e550b085206544bd03a8b1dd58a5414e9508351 <f9414004798d9742c1af23a1d839fe6a9503751c

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8Linux kernel CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

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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