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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9854 vulnerabilities reference this CWE, most recent first.
CVE-2023-1193 (GCVE-0-2023-1193)
Vulnerability from cvelistv5 – Published: 2023-11-01 19:10 – Updated: 2025-02-27 20:36
VLAI
EPSS
VEX
Title
Use-after-free in setup_async_work()
Summary
A use-after-free flaw was found in setup_async_work in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. This issue could allow an attacker to crash the system by accessing freed work.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-1193 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2154177 | issue-trackingx_refsource_REDHAT |
| https://lkml.kernel.org/linux-cifs/20230401084951… |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Kernel |
Unaffected:
6.3-rc6
|
|
| 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
2022-10-02 00:00
Credits
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CVE-2023-1192 (GCVE-0-2023-1192)
Vulnerability from cvelistv5 – Published: 2023-11-01 19:01 – Updated: 2025-02-27 20:36
VLAI
EPSS
VEX
Title
Use-after-free in smb2_is_status_io_timeout()
Summary
A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses it, CIFS will access a free memory region, leading to a denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-1192 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2154178 | issue-trackingx_refsource_REDHAT |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | kernel | ||
| 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
2022-10-02 00:00
Credits
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CVE-2023-1118 (GCVE-0-2023-1118)
Vulnerability from cvelistv5 – Published: 2023-03-02 00:00 – Updated: 2025-04-23 16:23
VLAI
EPSS
VEX
Summary
A flaw use after free in the Linux kernel integrated infrared receiver/transceiver driver was found in the way user detaching rc device. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
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CVE-2023-1079 (GCVE-0-2023-1079)
Vulnerability from cvelistv5 – Published: 2023-03-27 00:00 – Updated: 2025-02-19 21:36
VLAI
EPSS
VEX
Summary
A flaw was found in the Linux kernel. A use-after-free may be triggered in asus_kbd_backlight_set when plugging/disconnecting in a malicious USB device, which advertises itself as an Asus device. Similarly to the previous known CVE-2023-25012, but in asus devices, the work_struct may be scheduled by the LED controller while the device is disconnecting, triggering a use-after-free on the struct asus_kbd_leds *led structure. A malicious USB device may exploit the issue to cause memory corruption with controlled data.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Linux kernel |
Affected:
unknown
|
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CVE-2023-0590 (GCVE-0-2023-0590)
Vulnerability from cvelistv5 – Published: 2023-03-23 00:00 – Updated: 2024-08-02 05:17
VLAI
EPSS
VEX
Summary
A use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the Linux Kernel due to a race problem. This flaw leads to a denial of service issue. If patch ebda44da44f6 ("net: sched: fix race condition in qdisc_graft()") not applied yet, then kernel could be affected.
Severity
No CVSS data available.
CWE
Assigner
References
2 references
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CVE-2023-0494 (GCVE-0-2023-0494)
Vulnerability from cvelistv5 – Published: 2023-03-27 00:00 – Updated: 2025-02-24 17:43
VLAI
EPSS
VEX
Summary
A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.
Severity
7.8 (High)
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 | xorg-x11-server |
Affected:
xorg-server 21.1.7
|
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CVE-2023-0461 (GCVE-0-2023-0461)
Vulnerability from cvelistv5 – Published: 2023-02-28 14:23 – Updated: 2025-02-13 16:38
VLAI
EPSS
VEX
Title
Use-after-free vulnerability in the Linux Kernel
Summary
There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not require any privilege.
There is a use-after-free bug of icsk_ulp_data of a struct inet_connection_sock.
When CONFIG_TLS is enabled, user can install a tls context (struct tls_context) on a connected tcp socket. The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is created from the listener, the context is inherited and vulnerable.
The setsockopt TCP_ULP operation does not require any privilege.
We recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux Kernel |
Affected:
0 , < 2c02d41d71f90a5168391b6a5f2954112ba2307c
(git)
|
Date Public
2023-01-02 23:00
Credits
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CVE-2023-0358 (GCVE-0-2023-0358)
Vulnerability from cvelistv5 – Published: 2023-01-18 00:00 – Updated: 2025-04-03 19:30
VLAI
EPSS
VEX
Title
Use After Free in gpac/gpac
Summary
Use After Free in GitHub repository gpac/gpac prior to 2.3.0-DEV.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
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CVE-2023-0266 (GCVE-0-2023-0266)
Vulnerability from cvelistv5 – Published: 2023-01-30 13:09 – Updated: 2025-10-21 23:15
VLAI
EPSS
VEX
Title
Use after free in SNDRV_CTL_IOCTL_ELEM in Linux Kernel
Summary
A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e
Severity
7.9 (High)
SSVC
Exploitation: active
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:
4.14 , < 56b88b50565cd8b946a2d00b0c83927b7ebb055e
(git)
|
Date Public
2023-01-13 00:00
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CVE-2023-0240 (GCVE-0-2023-0240)
Vulnerability from cvelistv5 – Published: 2023-01-30 13:17 – Updated: 2024-08-02 05:02
VLAI
EPSS
VEX
Title
Use after free in io_uring in the Linux Kernel
Summary
There is a logic error in io_uring's implementation which can be used to trigger a use-after-free vulnerability leading to privilege escalation.
In the io_prep_async_work function the assumption that the last io_grab_identity call cannot return false is not true, and in this case the function will use the init_cred or the previous linked requests identity to do operations instead of using the current identity. This can lead to reference counting issues causing use-after-free. We recommend upgrading past version 5.10.161.
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
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux Kernel |
Affected:
5.10 , ≤ 5.10.161
(custom)
|
|
| linux | linux_kernel |
Affected:
5.10 , ≤ 5.10.161
(custom)
cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:* |
Date Public
2022-12-22 14:30
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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.