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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
10893 vulnerabilities reference this CWE, most recent first.
CVE-2023-4752 (GCVE-0-2023-4752)
Vulnerability from cvelistv5 – Published: 2023-09-04 13:46 – Updated: 2025-11-03 20:36
VLAI
EPSS
VEX
Title
Use After Free in vim/vim
Summary
Use After Free in GitHub repository vim/vim prior to 9.0.1858.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
9 references
Impacted products
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CVE-2023-4750 (GCVE-0-2023-4750)
Vulnerability from cvelistv5 – Published: 2023-09-04 13:47 – Updated: 2026-06-23 17:19
VLAI
EPSS
VEX
Title
Use After Free in vim/vim
Summary
Use After Free in GitHub repository vim/vim prior to 9.0.1857.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-01-28 20:55 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
7 references
Impacted products
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CVE-2023-4733 (GCVE-0-2023-4733)
Vulnerability from cvelistv5 – Published: 2023-09-04 13:47 – Updated: 2026-06-23 17:19
VLAI
EPSS
VEX
Title
Use After Free in vim/vim
Summary
Use After Free in GitHub repository vim/vim prior to 9.0.1840.
Severity
7.3 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-01-02 18:44 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
7 references
Impacted products
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CVE-2023-4679 (GCVE-0-2023-4679)
Vulnerability from cvelistv5 – Published: 2024-11-15 10:53 – Updated: 2024-11-15 19:12
VLAI
EPSS
VEX
Title
Use After Free in gpac/gpac
Summary
A use after free vulnerability exists in GPAC version 2.3-DEV-revrelease, specifically in the gf_filterpacket_del function in filter_core/filter.c at line 38. This vulnerability can lead to a double-free condition, which may cause the application to crash.
Severity
5.9 (Medium)
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-15 19:10 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
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CVE-2023-4623 (GCVE-0-2023-4623)
Vulnerability from cvelistv5 – Published: 2023-09-06 13:56 – Updated: 2025-02-27 21:00
VLAI
EPSS
VEX
Title
Use-after-free in Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component
Summary
A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation.
If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free.
We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-26 21:52 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Date Public
2023-08-26 01:57
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CVE-2023-4622 (GCVE-0-2023-4622)
Vulnerability from cvelistv5 – Published: 2023-09-06 13:56 – Updated: 2025-02-13 17:14
VLAI
EPSS
VEX
Title
Use-after-free in Linux kernel's af_unix component
Summary
A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation.
The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.
We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
6 references
Date Public
2023-08-23 15:52
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CVE-2023-4611 (GCVE-0-2023-4611)
Vulnerability from cvelistv5 – Published: 2023-08-29 21:25 – Updated: 2025-02-27 21:03
VLAI
EPSS
VEX
Title
Use after free race between mbind() and vma-locked page fault
Summary
A use-after-free flaw was found in mm/mempolicy.c in the memory management subsystem in the Linux Kernel. This issue is caused by a race between mbind() and VMA-locked page fault, and may allow a local attacker to crash the system or lead to a kernel information leak.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-26 21:53 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-4611 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2227244 | issue-trackingx_refsource_REDHAT |
| https://www.spinics.net/lists/stable-commits/msg3… |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Kernel |
Unaffected:
6.5-rc4
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Fedora | Fedora |
Date Public
2023-07-28 00:00
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CVE-2023-4387 (GCVE-0-2023-4387)
Vulnerability from cvelistv5 – Published: 2023-08-16 18:49 – Updated: 2025-11-06 19:44
VLAI
EPSS
VEX
Title
Kernel: vmxnet3: use-after-free in vmxnet3_rq_alloc_rx_buf()
Summary
A use-after-free flaw was found in vmxnet3_rq_alloc_rx_buf in drivers/net/vmxnet3/vmxnet3_drv.c in VMware's vmxnet3 ethernet NIC driver in the Linux Kernel. This issue could allow a local attacker to crash the system due to a double-free while cleaning up vmxnet3_rq_cleanup_all, which could also lead to a kernel information leak problem.
Severity
7.1 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
5 references
| URL | Tags |
|---|---|
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| https://access.redhat.com/errata/RHSA-2022:8267 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2023-4387 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2219270 | issue-trackingx_refsource_REDHAT |
| https://github.com/torvalds/linux/commit/9e7fef95… |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.18.0-425.3.1.el8 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:8::baseos cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:5.14.0-162.6.1.el9_1 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::crb cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
Date Public
2022-05-14 00:00
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CVE-2023-4295 (GCVE-0-2023-4295)
Vulnerability from cvelistv5 – Published: 2023-11-07 15:42 – Updated: 2025-12-16 18:23
VLAI
EPSS
VEX
Title
Mali GPU Kernel Driver allows improper GPU memory processing operations
Summary
A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2023-11-15 16:40 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Arm Ltd | Valhall GPU Kernel Driver |
Affected:
r29p0 , < r43p0
(patch)
|
|
| Arm Ltd | Arm 5th Gen GPU Architecture Kernel Driver |
Affected:
r41p0 , < r43p0
(patch)
|
Date Public
2023-11-07 11:00
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CVE-2023-4244 (GCVE-0-2023-4244)
Vulnerability from cvelistv5 – Published: 2023-09-06 13:53 – Updated: 2026-07-28 14:43
VLAI
EPSS
VEX
Title
Use-after-free in Linux kernel's netfilter: nf_tables component
Summary
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability.
We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
Date Public
2023-08-10 17:47
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"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Use-after-free in Linux kernel\u0027s netfilter: nf_tables component",
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778",
"assignerShortName": "Google",
"cveId": "CVE-2023-4244",
"datePublished": "2023-09-06T13:53:24.873Z",
"dateReserved": "2023-08-08T15:36:07.559Z",
"dateUpdated": "2026-07-28T14:43:13.218Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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.