Common Weakness Enumeration
CWE-416
AllowedUse After Free
Abstraction: Variant · Status: Stable
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
10952 vulnerabilities reference this CWE, most recent first.
CVE-2020-5378 (GCVE-0-2020-5378)
Vulnerability from cvelistv5 – Published: 2020-09-02 20:55 – Updated: 2024-09-17 01:51
VLAI
EPSS
VEX
Summary
Dell G7 17 7790 BIOS versions prior to 1.13.2 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in System Management Mode (SMM).
Severity
6.8 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/article/SLN322616 | x_refsource_MISC |
Impacted products
Date Public
2020-09-01 00:00
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CVE-2020-5376 (GCVE-0-2020-5376)
Vulnerability from cvelistv5 – Published: 2020-09-02 20:55 – Updated: 2024-09-16 22:55
VLAI
EPSS
VEX
Summary
Dell Inspiron 7347 BIOS versions prior to A13 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in System Management Mode (SMM).
Severity
6.8 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/article/SLN322616 | x_refsource_MISC |
Impacted products
Date Public
2020-09-01 00:00
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CVE-2020-5348 (GCVE-0-2020-5348)
Vulnerability from cvelistv5 – Published: 2020-04-03 23:20 – Updated: 2024-09-17 03:02
VLAI
EPSS
VEX
Summary
Dell Latitude 7202 Rugged Tablet BIOS versions prior to A28 contain a UAF vulnerability in EFI_BOOT_SERVICES in system management mode. A local unauthenticated attacker may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in system management mode.
Severity
6.8 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/article/SLN320792 | x_refsource_MISC |
Impacted products
Date Public
2020-04-03 00:00
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CVE-2020-4060 (GCVE-0-2020-4060)
Vulnerability from cvelistv5 – Published: 2020-06-22 15:45 – Updated: 2024-08-04 07:52
VLAI
EPSS
VEX
Title
Use After Free in in cups_update_info in LoRa Basics Station
Summary
In LoRa Basics Station before 2.0.4, there is a Use After Free vulnerability that leads to memory corruption. This bug is triggered on 32-bit machines when the CUPS server responds with a message (https://doc.sm.tc/station/cupsproto.html#http-post-response) where the signature length is larger than 2 GByte (never happens in practice), or the response is crafted specifically to trigger this issue (i.e. the length signature field indicates a value larger than (2**31)-1 although the signature actually does not contain that much data). In such a scenario, on 32 bit machines, Basic Station would execute a code path, where a piece of memory is accessed after it has been freed, causing the process to crash and restarted again. The CUPS transaction is typically mutually authenticated over TLS. Therefore, in order to trigger this vulnerability, the attacker would have to gain access to the CUPS server first. If the user chose to operate without authentication over TLS but yet is concerned about this vulnerability, one possible workaround is to enable TLS authentication. This has been fixed in 2.0.4.
Severity
4.1 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/lorabasics/basicstation/securi… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| LoRa Basics | LoRa Basics Station |
Affected:
< 2.0.4
|
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CVE-2020-4031 (GCVE-0-2020-4031)
Vulnerability from cvelistv5 – Published: 2020-06-22 00:00 – Updated: 2024-08-04 07:52
VLAI
EPSS
VEX
Title
Use-After-Free in gdi_SelectObject in FreeRDP
Summary
In FreeRDP before version 2.1.2, there is a use-after-free in gdi_SelectObject. All FreeRDP clients using compatibility mode with /relax-order-checks are affected. This is fixed in version 2.1.2.
Severity
CWE
- CWE-416 - Use After Free
Assigner
References
8 references
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CVE-2020-1983 (GCVE-0-2020-1983)
Vulnerability from cvelistv5 – Published: 2020-04-22 19:30 – Updated: 2024-09-16 19:41
VLAI
EPSS
VEX
Title
libslirp: use after free vulnerability cause a denial of service.
Summary
A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.
Severity
7.5 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://gitlab.freedesktop.org/slirp/libslirp/-/i… | x_refsource_MISC |
| https://gitlab.freedesktop.org/slirp/libslirp/-/c… | x_refsource_MISC |
| https://www.debian.org/security/2020/dsa-4665 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://usn.ubuntu.com/4372-1/ | vendor-advisoryx_refsource_UBUNTU |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
Impacted products
Date Public
2020-04-20 00:00
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CVE-2020-1909 (GCVE-0-2020-1909)
Vulnerability from cvelistv5 – Published: 2020-11-03 19:15 – Updated: 2024-08-04 06:53
VLAI
EPSS
VEX
Summary
A use-after-free in a logging library in WhatsApp for iOS prior to v2.20.111 and WhatsApp Business for iOS prior to v2.20.111 could have resulted in memory corruption, crashes and potentially code execution. This could have happened only if several events occurred together in sequence, including receiving an animated sticker while placing a WhatsApp video call on hold.
Severity
No CVSS data available.
CWE
- CWE-416 - Use After Free
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.whatsapp.com/security/advisories/2020/ | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WhatsApp Business for iOS |
Affected:
2.20.111
Affected: unspecified , < 2.20.111 (custom) Affected: 2.20.81 , < unspecified (custom) |
||
| WhatsApp for iOS |
Affected:
2.20.111
Affected: unspecified , < 2.20.111 (custom) Affected: 2.20.81 , < unspecified (custom) |
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CVE-2020-1900 (GCVE-0-2020-1900)
Vulnerability from cvelistv5 – Published: 2021-03-11 00:55 – Updated: 2024-08-04 06:54
VLAI
EPSS
VEX
Summary
When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting anything into it. Otherwise the array might resize, invalidating previously stored references. This pre-reservation was not occurring in HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.
Severity
No CVSS data available.
CWE
- CWE-416 - Use After Free (CWE-416)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://hhvm.com/blog/2020/06/30/security-update.html | x_refsource_CONFIRM |
| https://github.com/facebook/hhvm/commit/c1c4bb0cf… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HHVM |
Unaffected:
4.62.1 , < unspecified
(custom)
Affected: 4.62.0 Unaffected: 4.61.1 , < unspecified (custom) Affected: 4.61.0 Unaffected: 4.60.1 , < unspecified (custom) Affected: 4.60.0 Unaffected: 4.59.1 , < unspecified (custom) Affected: 4.59.0 Unaffected: 4.58.2 , < unspecified (custom) Affected: 4.58.0 , < unspecified (custom) Unaffected: 4.57.1 , < unspecified (custom) Affected: 4.57.0 Unaffected: 4.56.1 , < unspecified (custom) Affected: 4.33.0 , < unspecified (custom) Unaffected: 4.32.3 , < unspecified (custom) Affected: unspecified , < 4.32.3 (custom) |
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CVE-2020-1752 (GCVE-0-2020-1752)
Vulnerability from cvelistv5 – Published: 2020-04-30 00:00 – Updated: 2024-08-04 06:46
VLAI
EPSS
VEX
Summary
A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.
Severity
CWE
Assigner
References
9 references
Impacted products
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CVE-2020-1712 (GCVE-0-2020-1712)
Vulnerability from cvelistv5 – Published: 2020-03-31 16:44 – Updated: 2025-06-09 15:53
VLAI
EPSS
VEX
Summary
A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-09 15:52 UTC
CWE
Assigner
References
7 references
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| https://www.openwall.com/lists/oss-security/2020/… | x_refsource_CONFIRM |
| https://github.com/systemd/systemd/commit/ea0d0ed… | x_refsource_CONFIRM |
| https://github.com/systemd/systemd/commit/1068447… | x_refsource_CONFIRM |
| https://github.com/systemd/systemd/commit/6374862… | x_refsource_CONFIRM |
| https://github.com/systemd/systemd/commit/bc130b6… | x_refsource_CONFIRM |
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Mitigation
Architecture and Design
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Implementation
Strategy: Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.