Use After Free
CWE-416
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 Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.
We track 4,465 vulnerabilities of this type. 100% are rated high or critical, and the average CVSS score is 8.3. 109 have been exploited in real attacks.
How this weakness is prevented
- Architecture and Design: Choose a language that provides automatic memory management.
- Implementation: 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.
Latest Use After Free vulnerabilities
- 9.8 Critical severity
Document Server: Use After Free
A use after free issue discovered in ONLYOFFICE DocumentServer 4.0.3 through 7.3.2 allows remote attackers to run arbitrary code via crafted JavaScript file.
- 7.8 High severity
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: Use After Free
An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.
- 7.8 High severity
Acrobat Reader: Use After Free
Adobe Acrobat Reader versions 23.003.20244 (and earlier) and 20.005.30467 (and earlier) are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user in
- 7.8 High severity
Acrobat Reader: Use After Free
Adobe Acrobat Reader versions 23.003.20244 (and earlier) and 20.005.30467 (and earlier) are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user in
- 7.8 High severity
Acrobat Reader: Use After Free
Adobe Acrobat Reader versions 23.003.20244 (and earlier) and 20.005.30467 (and earlier) are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user in
- 7.8 High severity
Acrobat Reader: Use After Free
Adobe Acrobat Reader versions 23.003.20244 (and earlier) and 20.005.30467 (and earlier) are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user in
- 7.8 High severity
Acrobat Reader: Use After Free
Adobe Acrobat Reader versions 23.003.20244 (and earlier) and 20.005.30467 (and earlier) are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user in
- 7.8 High severity
Dimension: Use After Free
Adobe Dimension version 3.4.9 is affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
- 7.8 High severity
Solid Edge SE2023: Use After Free
A vulnerability has been identified in Solid Edge SE2023 (All versions < V223.0 Update 2). The affected application contains a use-after-free vulnerability that could be triggered while parsing specially crafted DWG file. An attacker could leverage this vulner
- 7.8 High severity
JT2Go: Use After Free
A vulnerability has been identified in JT2Go (All versions < V14.2.0.5), Solid Edge SE2022 (All versions < V222.0 Update 13), Solid Edge SE2023 (All versions < V223.0 Update 4), Teamcenter Visualization V13.2 (All versions < V13.2.0.15), Teamcenter Visualizati
- 7.8 High severity
Snapdragon: Use After Free
In the function call related to CAM_REQ_MGR_RELEASE_BUF there is no check if the buffer is being used. So when a function called cam_mem_get_cpu_buf to get the kernel va to use, another thread can call CAM_REQ_MGR_RELEASE_BUF to unmap the kernel va which cause
- 7.8 High severity
Red Hat Enterprise Linux 9: Use After Free
A use-after-free flaw was found in the Linux kernel’s Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system.
- 7.8 High severity
CX-Programmer: Use After Free
Use after free vulnerability exists in CX-Programmer Ver.9.79 and earlier. By having a user open a specially crafted CXP file, information disclosure and/or arbitrary code execution may occur. This vulnerability is different from CVE-2023-22317 and CVE-2023-22
- 7.8 High severity
CX-Programmer: Use After Free
Use after free vulnerability exists in CX-Programmer Ver.9.79 and earlier. By having a user open a specially crafted CXP file, information disclosure and/or arbitrary code execution may occur. This vulnerability is different from CVE-2023-22277 and CVE-2023-22
- 7.8 High severity
CX-Programmer: Use After Free
Use after free vulnerability exists in CX-Programmer Ver.9.79 and earlier. By having a user open a specially crafted CXP file, information disclosure and/or arbitrary code execution may occur. This vulnerability is different from CVE-2023-22277 and CVE-2023-22
- 7.8 High severity
CX-Programmer: Use After Free
Use after free vulnerability exists in CX-Programmer Included in CX-One CXONE-AL[][]D-V4 V9.80 and earlier. By having a user open a specially crafted CXP file, information disclosure and/or arbitrary code execution may occur.
- 8.8 High severity
Chrome: Use After Free
Use after free in WebRTC in Google Chrome prior to 115.0.5790.170 allowed a remote attacker to potentially exploit heap corruption via a crafted WebRTC session. (Chromium security severity: High)
- 8.8 High severity
Chrome: Use After Free
Use after free in Cast in Google Chrome prior to 115.0.5790.170 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
- 8.8 High severity
Chrome: Use After Free
Use after free in Blink Task Scheduling in Google Chrome prior to 115.0.5790.170 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
- 8.8 High severity
Chrome: Use After Free
Use after free in Diagnostics in Google Chrome on ChromeOS prior to 115.0.5790.131 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: Hig
- 8.8 High severity
Chrome: Use After Free
Use after free in Tab Groups in Google Chrome prior to 115.0.5790.98 allowed a remote attacker who convinced a user to engage in specific UI interactions to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
- 8.8 High severity
Chrome: Use After Free
Use after free in Splitscreen in Google Chrome on ChromeOS prior to 115.0.5790.131 allowed a remote attacker who convinced a user to engage in specific UI interactions to potentially exploit heap corruption via crafted UI interactions. (Chromium security sever
- 8.8 High severity
Chrome: Use After Free
Use after free in WebRTC in Google Chrome prior to 115.0.5790.98 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
- 8.8 High severity
Chrome: Use After Free
Use after free in WebRTC in Google Chrome prior to 115.0.5790.98 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
- 7.8 High severity
Red Hat Enterprise Linux 8: Use After Free
A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their pri
- 9.6 Critical severity
Chrome: Use After Free
Use after free in WebRTC in Google Chrome prior to 97.0.4692.71 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
- 8.8 High severity
Chrome: Use After Free
Use after free in Accessibility in Google Chrome prior to 99.0.4844.51 allowed a remote attacker who convinced a user to engage in specific UI gestures to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: Low)
- 8.8 High severity
Chrome: Use After Free
Use after free in Base Internals in Google Chrome prior to 101.0.4951.41 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)
- 8.8 High severity
Chrome: Use After Free
Use after free in UI in Google Chrome prior to 102.0.5005.61 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: Medium)
- 8.8 High severity
Chrome: Use After Free
Use after free in Media in Google Chrome prior to 103.0.5060.53 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)
- 9.8 Critical severity
tvOS: Use After Free
A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 9.6, macOS Big Sur 11.7.9, iOS 15.7.8 and iPadOS 15.7.8, macOS Monterey 12.6.8, tvOS 16.6, iOS 16.6 and iPadOS 16.6, macOS Ventura 13.5. An app may be able to
- 7.8 High severity
tvOS: Use After Free
A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Monterey 12.6.8, iOS 15.7.8 and iPadOS 15.7.8, iOS 16.6 and iPadOS 16.6, tvOS 16.6, macOS Big Sur 11.7.9, macOS Ventura 13.5, watchOS 9.6. An app may be able to
- 7.8 High severity
tvOS: Use After Free
A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Monterey 12.6.8, iOS 15.7.8 and iPadOS 15.7.8, iOS 16.6 and iPadOS 16.6, tvOS 16.6, macOS Big Sur 11.7.9, macOS Ventura 13.5, watchOS 9.6. An app may be able to
- 7.8 High severity
tvOS: Use After Free
A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Monterey 12.6.8, iOS 16.6 and iPadOS 16.6, tvOS 16.6, macOS Big Sur 11.7.9, macOS Ventura 13.5, watchOS 9.6. An app may be able to execute arbitrary code with ke
- 7.5 High severity
envoy: Use After Free
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy when the `origin` header is removed and deleted between `decode
- 7.8 High severity
Red Hat Enterprise Linux 8: Use After Free
An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate t
- 7.1 High severity
Red Hat Enterprise Linux 8: Use After Free
A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This issue may allow an attacker with local user access to cause a system crash or leak internal kernel information.
- 7.8 High severity
Kernel: Use After Free
A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the referen
- 7.8 High severity
Kernel: Use After Free
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Flaw in the error handling of bound chains causes a use-after-free in the abort path of NFT_MSG_NEWRULE. The vulnerabili
- 7.8 High severity
Kernel: Use After Free
A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the refer