In the Linux kernel, the following vulnerability has been resolved:

tcp: Fix use-after-free of nreq in reqsk_timer_handler().

The cited commit replaced inet_csk_reqsk_queue_drop_and_put() with
__inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler().

Then, oreq should be passed to reqsk_put() instead of req; otherwise
use-after-free of nreq could happen when reqsk is migrated but the
retry attempt failed (e.g. due to timeout).

Let's pass oreq to reqsk_put().

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00048.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

No data.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4076-1 linux-6.1 security update
EUVD EUVD EUVD-2024-51878 In the Linux kernel, the following vulnerability has been resolved: tcp: Fix use-after-free of nreq in reqsk_timer_handler(). The cited commit replaced inet_csk_reqsk_queue_drop_and_put() with __inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler(). Then, oreq should be passed to reqsk_put() instead of req; otherwise use-after-free of nreq could happen when reqsk is migrated but the retry attempt failed (e.g. due to timeout). Let's pass oreq to reqsk_put().
Ubuntu USN Ubuntu USN USN-7387-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7387-2 Linux kernel (FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-7387-3 Linux kernel (Real-time) vulnerabilities
Ubuntu USN Ubuntu USN USN-7388-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7407-1 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-7421-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-7459-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-7459-2 Linux kernel (GCP) vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/2dcc86fefe09ac853158afd96b60d544af115dc5 cve-icon cve-icon
https://git.kernel.org/stable/c/65ed89cad1f57034c256b016e89e8c0a4ec7c65b cve-icon cve-icon
https://git.kernel.org/stable/c/6d845028609a4af0ad66f499ee0bd5789122b067 cve-icon cve-icon
https://git.kernel.org/stable/c/9a3c1ad93e6fba67b3a637cfa95a57a6685e4908 cve-icon cve-icon
https://git.kernel.org/stable/c/c31e72d021db2714df03df6c42855a1db592716c cve-icon cve-icon
https://git.kernel.org/stable/c/d0eb14cb8c08b00c36a3d5dc57a6f428b301f721 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html cve-icon
https://lore.kernel.org/linux-cve-announce/2024122728-CVE-2024-53206-d85d@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2024-53206 cve-icon
https://www.cve.org/CVERecord?id=CVE-2024-53206 cve-icon
History

Mon, 03 Nov 2025 21:30:00 +0000

Type Values Removed Values Added
References

Tue, 11 Feb 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 14 Jan 2025 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-416
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Wed, 01 Jan 2025 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important

 cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Mon, 30 Dec 2024 01:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important

Fri, 27 Dec 2024 14:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: tcp: Fix use-after-free of nreq in reqsk_timer_handler(). The cited commit replaced inet_csk_reqsk_queue_drop_and_put() with __inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler(). Then, oreq should be passed to reqsk_put() instead of req; otherwise use-after-free of nreq could happen when reqsk is migrated but the retry attempt failed (e.g. due to timeout). Let's pass oreq to reqsk_put().
Title tcp: Fix use-after-free of nreq in reqsk_timer_handler().
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-11-03T20:47:34.185Z

Reserved: 2024-11-19T17:17:25.019Z

Link: CVE-2024-53206

cve-icon Vulnrichment

Updated: 2025-02-11T15:43:22.907Z

cve-icon NVD

Status : Modified

Published: 2024-12-27T14:15:28.453

Modified: 2025-11-03T21:17:41.450

Link: CVE-2024-53206

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-12-27T00:00:00Z

Links: CVE-2024-53206 - Bugzilla

cve-icon OpenCVE Enrichment

No data.