Common Weakness Enumeration

CWE-416

Allowed

Use 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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-2023-1249 (GCVE-0-2023-1249)

Vulnerability from cvelistv5 – Published: 2023-03-23 00:00 – Updated: 2025-03-19 15:45
VLAI
Summary
A use-after-free flaw was found in the Linux kernel’s core dump subsystem. This flaw allows a local user to crash the system. Only if patch 390031c94211 ("coredump: Use the vma snapshot in fill_files_note") not applied yet, then kernel could be affected.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
n/a Kernel Affected: Linux kernel 5.18-rc1
Show details on NVD website

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CVE-2023-1195 (GCVE-0-2023-1195)

Vulnerability from cvelistv5 – Published: 2023-05-18 00:00 – Updated: 2025-03-18 18:38
VLAI
Summary
A use-after-free flaw was found in reconn_set_ipaddr_from_hostname in fs/cifs/connect.c in the Linux kernel. The issue occurs when it forgets to set the free pointer server->hostname to NULL, leading to an invalid pointer request.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
n/a Kernel Affected: prior to kernel 6.1 rc3
Show details on NVD website

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CVE-2023-1194 (GCVE-0-2023-1194)

Vulnerability from cvelistv5 – Published: 2023-11-03 07:41 – Updated: 2025-02-13 16:39
VLAI
Title
Use-after-free in parse_lease_state()
Summary
An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.
CWE
Assigner
Date Public
2022-10-02 00:00
Credits
Red Hat would like to thank Pumpkin (@u1f383) (DEVCORE Internship Program, and NYCU Software Security LAB) for reporting this issue.
Show details on NVD website

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CVE-2023-1193 (GCVE-0-2023-1193)

Vulnerability from cvelistv5 – Published: 2023-11-01 19:10 – Updated: 2025-02-27 20:36
VLAI
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Date Public
2022-10-02 00:00
Credits
Red Hat would like to thank Pumpkin (@u1f383), working with DEVCORE Internship Program for reporting this issue.
Show details on NVD website

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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
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Date Public
2022-10-02 00:00
Credits
Red Hat would like to thank Pumpkin (@u1f383), working with DEVCORE Internship Program for reporting this issue.
Show details on NVD website

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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
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.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
n/a Kernel Affected: Linux kernel 6.3-rc1
Show details on NVD website

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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
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.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
n/a Linux kernel Affected: unknown
Show details on NVD website

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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
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
Impacted products
Vendor Product Version
n/a Kernel Affected: Linux kernel 6.1-rc2
Show details on NVD website

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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
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.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
n/a xorg-x11-server Affected: xorg-server 21.1.7
Show details on NVD website

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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
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
Impacted products
Vendor Product Version
Linux Linux Kernel Affected: 0 , < 2c02d41d71f90a5168391b6a5f2954112ba2307c (git)
Create a notification for this product.
Date Public
2023-01-02 23:00
Credits
slipper
Show details on NVD website

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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.