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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9821 vulnerabilities reference this CWE, most recent first.
CVE-2023-2513 (GCVE-0-2023-2513)
Vulnerability from cvelistv5 – Published: 2023-05-08 00:00 – Updated: 2025-04-23 16:21
VLAI
EPSS
VEX
Summary
A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode size for extended attributes. This flaw could allow a privileged local user to cause a system crash or other undefined behaviors.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Linux kernel ext4 filesystem |
Affected:
Fixed in kernel 6.0-rc1
|
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CVE-2023-2236 (GCVE-0-2023-2236)
Vulnerability from cvelistv5 – Published: 2023-05-01 12:50 – Updated: 2025-03-05 19:03
VLAI
EPSS
VEX
Title
Use-after-free in Linux kernel's Performance Events subsystem
Summary
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation.
Both io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability.
We recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux Kernel |
Affected:
5.19 , < 6.1
(custom)
|
Date Public
2022-11-25 13:54
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CVE-2023-2235 (GCVE-0-2023-2235)
Vulnerability from cvelistv5 – Published: 2023-05-01 12:51 – Updated: 2025-03-05 19:03
VLAI
EPSS
VEX
Title
Use-after-free in Linux kernel's Performance Events subsystem
Summary
A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to achieve local privilege escalation.
The perf_group_detach function did not check the event's siblings' attach_state before calling add_event_to_groups(), but remove_on_exec made it possible to call list_del_event() on before detaching from their group, making it possible to use a dangling pointer causing a use-after-free vulnerability.
We recommend upgrading past commit fd0815f632c24878e325821943edccc7fde947a2.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux Kernel |
Affected:
5.13 , < 6.3
(custom)
|
Date Public
2023-03-15 20:49
Credits
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CVE-2023-2203 (GCVE-0-2023-2203)
Vulnerability from cvelistv5 – Published: 2023-05-17 00:00 – Updated: 2025-01-22 19:41
VLAI
EPSS
VEX
Summary
A flaw was found in the WebKitGTK package. An improper input validation issue may lead to a use-after-free vulnerability. This flaw allows attackers with network access to pass specially crafted web content files, causing a denial of service or arbitrary code execution. This CVE exists because of a CVE-2023-28205 security regression for the WebKitGTK package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - - Use After Free
Assigner
References
Impacted products
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CVE-2023-2162 (GCVE-0-2023-2162)
Vulnerability from cvelistv5 – Published: 2023-04-19 00:00 – Updated: 2025-03-19 15:32
VLAI
EPSS
VEX
Summary
A use-after-free vulnerability was found in iscsi_sw_tcp_session_create in drivers/scsi/iscsi_tcp.c in SCSI sub-component in the Linux Kernel. In this flaw an attacker could leak kernel internal information.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
Impacted products
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CVE-2023-1999 (GCVE-0-2023-1999)
Vulnerability from cvelistv5 – Published: 2023-06-20 11:28 – Updated: 2025-02-13 16:39
VLAI
EPSS
VEX
Title
Use after free in libwebp
Summary
There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
Impacted products
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CVE-2023-1990 (GCVE-0-2023-1990)
Vulnerability from cvelistv5 – Published: 2023-04-12 00:00 – Updated: 2025-03-19 15:39
VLAI
EPSS
VEX
Summary
A use-after-free flaw was found in ndlc_remove in drivers/nfc/st-nci/ndlc.c in the Linux Kernel. This flaw could allow an attacker to crash the system due to a race problem.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
Impacted products
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CVE-2023-1989 (GCVE-0-2023-1989)
Vulnerability from cvelistv5 – Published: 2023-04-11 00:00 – Updated: 2024-08-26 13:09
VLAI
EPSS
VEX
Summary
A use-after-free flaw was found in btsdio_remove in drivers\bluetooth\btsdio.c in the Linux Kernel. In this flaw, a call to btsdio_remove with an unfinished job, may cause a race problem leading to a UAF on hdev devices.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Kernel |
Affected:
Linux kernel version prior to Kernel 6.3 RC4
|
|
| netapp | hci_baseboard_management_controller |
Affected:
h300s
Affected: h410c Affected: h410s Affected: h500s Affected: h700s cpe:2.3:a:netapp:hci_baseboard_management_controller:h300s:*:*:*:*:*:*:* cpe:2.3:a:netapp:hci_baseboard_management_controller:h410c:*:*:*:*:*:*:* cpe:2.3:a:netapp:hci_baseboard_management_controller:h410s:*:*:*:*:*:*:* cpe:2.3:a:netapp:hci_baseboard_management_controller:h500s:*:*:*:*:*:*:* cpe:2.3:a:netapp:hci_baseboard_management_controller:h700s:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Affected:
0 , < 6.3+rc4
(custom)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| debian | debian_linux |
Affected:
5.10.178-3
cpe:2.3:o:debian:debian_linux:-:*:*:*:*:*:*:* |
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CVE-2023-1872 (GCVE-0-2023-1872)
Vulnerability from cvelistv5 – Published: 2023-04-12 15:40 – Updated: 2025-02-13 16:39
VLAI
EPSS
VEX
Title
Use-after-free in Linux kernel's io_uring subsystem
Summary
A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escalation.
The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered.
We recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8.
Severity
7.8 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux Kernel |
Affected:
5.7 , ≤ 5.17
(custom)
|
Date Public
2023-03-03 10:45
Credits
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CVE-2023-1859 (GCVE-0-2023-1859)
Vulnerability from cvelistv5 – Published: 2023-05-17 00:00 – Updated: 2025-03-18 18:57
VLAI
EPSS
VEX
Summary
A use-after-free flaw was found in xen_9pfs_front_removet in net/9p/trans_xen.c in Xen transport for 9pfs in the Linux Kernel. This flaw could allow a local attacker to crash the system due to a race problem, possibly leading to a kernel information leak.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
Impacted products
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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.