CVE-2024-50036

Kernel memory corruption via namespace teardown race

Published Oct 21, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel allows local users to corrupt kernel memory during network namespace teardown. During namespace dismantling, dst_release() defers dst_destroy() past an RCU grace period, so dst_entries_add() can access per-CPU state already freed by dst_entries_destroy(). The flaw requires local low-privileged access and timing the teardown race, with kernel crashes or memory compromise as bounded consequences.

CVSS severity7.0
High
EPSS probability0.25%
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 allows local users to corrupt kernel memory during network namespace teardown. During namespace dismantling, dst_release() defers dst_destroy() past an RCU grace period, so dst_entries_add() can access per-CPU state already freed by dst_entries_destroy(). The flaw requires local low-privileged access and timing the teardown race, with kernel crashes or memory compromise as bounded consequences.

The record

CVE
CVE-2024-50036
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 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=3.10.50 <3.11
  2. Affected versionversion=3.12.26 <3.13
  3. Affected versionversion=3.14.14 <3.15
  4. Affected versionversion=3.15.7 <3.16
  5. Affected versionversion=3.16
  6. Affected versionversion=591b1e1bb40152e22cee757f493046a0ca946bf8
  7. Affected versionversion=86e48c03d774e01ccd71ecba4fc4b5c2bc0b5b41
  8. Affected versionversion=9a4fe697023dbe6c25caa1f8b2153af869a29bd2
  9. Affected versionversion=df90819dafcd6b97fc665f63a15752a570e227a2
  10. Affected versionversion=f88649721268999bdff09777847080a52004f691 <3c7c918ec0aa3555372c5a57f18780b7a96c5cfc
  11. Affected versionversion=f88649721268999bdff09777847080a52004f691 <547087307bc19417b4f2bc85ba9664a3e8db5a6a
  12. Affected versionversion=f88649721268999bdff09777847080a52004f691 <a60db84f772fc3a906c6c4072f9207579c41166f
  13. Affected versionversion=f88649721268999bdff09777847080a52004f691 <ac888d58869bb99753e7652be19a151df9ecb35d
  14. Affected versionversion=f88649721268999bdff09777847080a52004f691 <e3915f028b1f1c37e87542e5aadd33728c259d96
  15. Affected versionversion=f88649721268999bdff09777847080a52004f691 <eae7435b48ffc8e9be0ff9cfeae40af479a609dd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.10.50 <3.11; version=3.12.26 <3.13; version=3.14.14 <3.15; version=3.15.7 <3.16; version=3.16; version=591b1e1bb40152e22cee757f493046a0ca946bf8; version=86e48c03d774e01ccd71ecba4fc4b5c2bc0b5b41; version=9a4fe697023dbe6c25caa1f8b2153af869a29bd2; version=df90819dafcd6b97fc665f63a15752a570e227a2; version=f88649721268999bdff09777847080a52004f691 <3c7c918ec0aa3555372c5a57f18780b7a96c5cfc; version=f88649721268999bdff09777847080a52004f691 <547087307bc19417b4f2bc85ba9664a3e8db5a6a; version=f88649721268999bdff09777847080a52004f691 <a60db84f772fc3a906c6c4072f9207579c41166f; version=f88649721268999bdff09777847080a52004f691 <ac888d58869bb99753e7652be19a151df9ecb35d; version=f88649721268999bdff09777847080a52004f691 <e3915f028b1f1c37e87542e5aadd33728c259d96; version=f88649721268999bdff09777847080a52004f691 <eae7435b48ffc8e9be0ff9cfeae40af479a609dd

Published CVSS scores

7.0UbuntuCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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