Description
Issue summary: Calling the OpenSSL API function SSL_free_buffers may cause
memory to be accessed that was previously freed in some situations

Impact summary: A use after free can have a range of potential consequences such
as the corruption of valid data, crashes or execution of arbitrary code.
However, only applications that directly call the SSL_free_buffers function are
affected by this issue. Applications that do not call this function are not
vulnerable. Our investigations indicate that this function is rarely used by
applications.

The SSL_free_buffers function is used to free the internal OpenSSL buffer used
when processing an incoming record from the network. The call is only expected
to succeed if the buffer is not currently in use. However, two scenarios have
been identified where the buffer is freed even when still in use.

The first scenario occurs where a record header has been received from the
network and processed by OpenSSL, but the full record body has not yet arrived.
In this case calling SSL_free_buffers will succeed even though a record has only
been partially processed and the buffer is still in use.

The second scenario occurs where a full record containing application data has
been received and processed by OpenSSL but the application has only read part of
this data. Again a call to SSL_free_buffers will succeed even though the buffer
is still in use.

While these scenarios could occur accidentally during normal operation a
malicious attacker could attempt to engineer a stituation where this occurs.
We are not aware of this issue being actively exploited.

The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
Published: 2024-11-13
Score: 9.8 Critical
EPSS: 2.9% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-3942-1 openssl security update
Debian DLA Debian DLA DLA-3942-2 openssl regression update
Ubuntu USN Ubuntu USN USN-6937-1 OpenSSL vulnerabilities
Ubuntu USN Ubuntu USN USN-7894-1 EDK II vulnerabilities
History

Mon, 09 Nov 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Debian
Debian debian Linux
Netapp
Netapp 500f
Netapp 500f Firmware
Netapp 8300
Netapp 8300 Firmware
Netapp 8700
Netapp 8700 Firmware
Netapp 9500
Netapp 9500 Firmware
Netapp a150
Netapp a150 Firmware
Netapp a220
Netapp a220 Firmware
Netapp a250
Netapp a250 Firmware
Netapp a400
Netapp a400 Firmware
Netapp a700s
Netapp a700s Firmware
Netapp a800
Netapp a800 Firmware
Netapp a900
Netapp a900 Firmware
Netapp active Iq Unified Manager
Netapp bootstrap Os
Netapp brocade Fabric Operating System
Netapp c190
Netapp c190 Firmware
Netapp c250
Netapp c250 Firmware
Netapp c400
Netapp c400 Firmware
Netapp c800
Netapp c800 Firmware
Netapp fas2720
Netapp fas2720 Firmware
Netapp fas2750
Netapp fas2750 Firmware
Netapp fas2820
Netapp fas2820 Firmware
Netapp h300s
Netapp h300s Firmware
Netapp h410c
Netapp h410c Firmware
Netapp h410s
Netapp h410s Firmware
Netapp h500s
Netapp h500s Firmware
Netapp h610c
Netapp h610c Firmware
Netapp h610s
Netapp h610s Firmware
Netapp h615c
Netapp h615c Firmware
Netapp h700s
Netapp h700s Firmware
Netapp hci Compute Node
Netapp management Services For Element Software And Netapp Hci
Netapp oncommand Workflow Automation
Netapp ontap Select Deploy Administration Utility
Netapp snapmanager
Openssl
Openssl openssl
CPEs cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:*
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:a:netapp:management_services_for_element_software_and_netapp_hci:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:snapmanager:-:*:*:*:*:hyper-v:*:*
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:3.3.0:*:*:*:*:*:*:*
cpe:2.3:h:netapp:500f:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:8300:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:8700:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:9500:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:a150:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:a220:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:a250:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:a400:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:a700s:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:a800:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:a900:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:c190:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:c250:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:c400:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:c800:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:fas2720:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:fas2750:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:fas2820:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h610c:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h610s:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h615c:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:netapp:500f_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:9500_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:a150_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:a220_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:a250_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:a800_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:a900_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:brocade_fabric_operating_system:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:c190_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:c250_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:c400_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:c800_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:fas2720_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:fas2750_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:fas2820_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
Vendors & Products Debian
Debian debian Linux
Netapp
Netapp 500f
Netapp 500f Firmware
Netapp 8300
Netapp 8300 Firmware
Netapp 8700
Netapp 8700 Firmware
Netapp 9500
Netapp 9500 Firmware
Netapp a150
Netapp a150 Firmware
Netapp a220
Netapp a220 Firmware
Netapp a250
Netapp a250 Firmware
Netapp a400
Netapp a400 Firmware
Netapp a700s
Netapp a700s Firmware
Netapp a800
Netapp a800 Firmware
Netapp a900
Netapp a900 Firmware
Netapp active Iq Unified Manager
Netapp bootstrap Os
Netapp brocade Fabric Operating System
Netapp c190
Netapp c190 Firmware
Netapp c250
Netapp c250 Firmware
Netapp c400
Netapp c400 Firmware
Netapp c800
Netapp c800 Firmware
Netapp fas2720
Netapp fas2720 Firmware
Netapp fas2750
Netapp fas2750 Firmware
Netapp fas2820
Netapp fas2820 Firmware
Netapp h300s
Netapp h300s Firmware
Netapp h410c
Netapp h410c Firmware
Netapp h410s
Netapp h410s Firmware
Netapp h500s
Netapp h500s Firmware
Netapp h610c
Netapp h610c Firmware
Netapp h610s
Netapp h610s Firmware
Netapp h615c
Netapp h615c Firmware
Netapp h700s
Netapp h700s Firmware
Netapp hci Compute Node
Netapp management Services For Element Software And Netapp Hci
Netapp oncommand Workflow Automation
Netapp ontap Select Deploy Administration Utility
Netapp snapmanager
Openssl
Openssl openssl

Sun, 08 Nov 2026 07:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:openssl:openssl:-:*:*:*:*:*:*:*
Vendors & Products Openssl
Openssl openssl
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'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 04 Nov 2025 18:30:00 +0000

Type Values Removed Values Added
References

Mon, 03 Nov 2025 23:30:00 +0000


Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.0009}

epss

{'score': 0.00106}


Wed, 13 Nov 2024 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Openssl
Openssl openssl
CPEs cpe:2.3:a:openssl:openssl:-:*:*:*:*:*:*:*
Vendors & Products Openssl
Openssl openssl
Metrics cvssV3_1

{'score': 5.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

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'}


Wed, 13 Nov 2024 10:30:00 +0000

Type Values Removed Values Added
Description A use-after-free vulnerability was found in OpenSSL. Calling the OpenSSL API SSL_free_buffers function may cause memory to be accessed that was previously freed in some situations. Issue summary: Calling the OpenSSL API function SSL_free_buffers may cause memory to be accessed that was previously freed in some situations Impact summary: A use after free can have a range of potential consequences such as the corruption of valid data, crashes or execution of arbitrary code. However, only applications that directly call the SSL_free_buffers function are affected by this issue. Applications that do not call this function are not vulnerable. Our investigations indicate that this function is rarely used by applications. The SSL_free_buffers function is used to free the internal OpenSSL buffer used when processing an incoming record from the network. The call is only expected to succeed if the buffer is not currently in use. However, two scenarios have been identified where the buffer is freed even when still in use. The first scenario occurs where a record header has been received from the network and processed by OpenSSL, but the full record body has not yet arrived. In this case calling SSL_free_buffers will succeed even though a record has only been partially processed and the buffer is still in use. The second scenario occurs where a full record containing application data has been received and processed by OpenSSL but the application has only read part of this data. Again a call to SSL_free_buffers will succeed even though the buffer is still in use. While these scenarios could occur accidentally during normal operation a malicious attacker could attempt to engineer a stituation where this occurs. We are not aware of this issue being actively exploited. The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
Title openssl: Use After Free with SSL_free_buffers Use After Free with SSL_free_buffers
References

Wed, 13 Nov 2024 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat enterprise Linux
CPEs cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux

Fri, 09 Aug 2024 10:30:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE. A use-after-free vulnerability was found in OpenSSL. Calling the OpenSSL API SSL_free_buffers function may cause memory to be accessed that was previously freed in some situations.

Subscriptions

Debian Debian Linux
Netapp 500f 500f Firmware 8300 8300 Firmware 8700 8700 Firmware 9500 9500 Firmware A150 A150 Firmware A220 A220 Firmware A250 A250 Firmware A400 A400 Firmware A700s A700s Firmware A800 A800 Firmware A900 A900 Firmware Active Iq Unified Manager Bootstrap Os Brocade Fabric Operating System C190 C190 Firmware C250 C250 Firmware C400 C400 Firmware C800 C800 Firmware Fas2720 Fas2720 Firmware Fas2750 Fas2750 Firmware Fas2820 Fas2820 Firmware H300s H300s Firmware H410c H410c Firmware H410s H410s Firmware H500s H500s Firmware H610c H610c Firmware H610s H610s Firmware H615c H615c Firmware H700s H700s Firmware Hci Compute Node Management Services For Element Software And Netapp Hci Oncommand Workflow Automation Ontap Select Deploy Administration Utility Snapmanager
Openssl Openssl
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: openssl

Published:

Updated: 2026-11-06T21:40:56.289Z

Reserved: 2024-05-10T09:56:11.310Z

Link: CVE-2024-4741

cve-icon Vulnrichment

Updated: 2025-11-04T17:26:59.261Z

cve-icon NVD

Status : Analyzed

Published: 2024-11-13T11:15:04.480

Modified: 2026-11-09T17:27:44.183

Link: CVE-2024-4741

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-28T00:00:00Z

Links: CVE-2024-4741 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses