CWE-367
Time-of-check Time-of-use (TOCTOU) Race Condition
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
CVE-2024-45565 (GCVE-0-2024-45565)
Vulnerability from cvelistv5 – Published: 2025-05-06 08:31 – Updated: 2026-02-26 18:29
VLAI
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in Camera Driver
Summary
Memory corruption when blob structure is modified by user-space after kernel verification.
Severity
7.8 (High)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
Affected:
SDM429W
Affected: Snapdragon 429 Mobile Platform Affected: WCN3620 Affected: WCN3660B |
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CVE-2024-47494 (GCVE-0-2024-47494)
Vulnerability from cvelistv5 – Published: 2024-10-11 15:24 – Updated: 2024-10-11 17:48
VLAI
Title
Junos OS: Due to a race condition AgentD process causes a memory corruption and FPC reset
Summary
A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in the AgentD process of Juniper Networks Junos OS allows an attacker who is already causing impact to established sessions which generates counter changes picked up by the AgentD process during telemetry polling, to move the AgentD process into a state where AgentD attempts to reap an already destroyed sensor. This reaping attempt then leads to memory corruption causing the FPC to crash which is a Denial of Service (DoS).
The FPC will recover automatically without user intervention after the crash.
This issue affects Junos OS:
* All versions before 21.4R3-S9
* From 22.2 before 22.2R3-S5,
* From 22.3 before 22.3R3-S4,
* From 22.4 before 22.4R3-S3,
* From 23.2 before 23.2R2-S2,
* From 23.4 before 23.4R2.
This issue does not affect Junos OS Evolved.
Severity
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA88121 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 21.4R3-S9
(semver)
Affected: 22.2 , < 22.2R3-S5 (semver) Affected: 22.3 , < 22.3R3-S4 (semver) Affected: 22.4 , < 22.4R3-S3 (semver) Affected: 23.2 , < 23.2R2-S2 (semver) Affected: 23.4 , < 23.4R2 (semver) |
Date Public
2024-10-09 16:00
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CVE-2024-47813 (GCVE-0-2024-47813)
Vulnerability from cvelistv5 – Published: 2024-10-09 18:07 – Updated: 2024-10-09 19:43
VLAI
Title
Wasmtime race condition could lead to WebAssembly control-flow integrity and type safety violations
Summary
Wasmtime is an open source runtime for WebAssembly. Under certain concurrent event orderings, a `wasmtime::Engine`'s internal type registry was susceptible to double-unregistration bugs due to a race condition, leading to panics and potentially type registry corruption. That registry corruption could, following an additional and particular sequence of concurrent events, lead to violations of WebAssembly's control-flow integrity (CFI) and type safety. Users that do not use `wasmtime::Engine` across multiple threads are not affected. Users that only create new modules across threads over time are additionally not affected. Reproducing this bug requires creating and dropping multiple type instances (such as `wasmtime::FuncType` or `wasmtime::ArrayType`) concurrently on multiple threads, where all types are associated with the same `wasmtime::Engine`. **Wasm guests cannot trigger this bug.** See the "References" section below for a list of Wasmtime types-related APIs that are affected. Wasmtime maintains an internal registry of types within a `wasmtime::Engine` and an engine is shareable across threads. Types can be created and referenced through creation of a `wasmtime::Module`, creation of `wasmtime::FuncType`, or a number of other APIs where the host creates a function (see "References" below). Each of these cases interacts with an engine to deduplicate type information and manage type indices that are used to implement type checks in WebAssembly's `call_indirect` function, for example. This bug is a race condition in this management where the internal type registry could be corrupted to trigger an assert or contain invalid state. Wasmtime's internal representation of a type has individual types (e.g. one-per-host-function) maintain a registration count of how many time it's been used. Types additionally have state within an engine behind a read-write lock such as lookup/deduplication information. The race here is a time-of-check versus time-of-use (TOCTOU) bug where one thread atomically decrements a type entry's registration count, observes zero registrations, and then acquires a lock in order to unregister that entry. However, between when this first thread observed the zero-registration count and when it acquires that lock, another thread could perform the following sequence of events: re-register another copy of the type, which deduplicates to that same entry, resurrecting it and incrementing its registration count; then drop the type and decrement its registration count; observe that the registration count is now zero; acquire the type registry lock; and finally unregister the type. Now, when the original thread finally acquires the lock and unregisters the entry, it is the second time this entry has been unregistered. This bug was originally introduced in Wasmtime 19's development of the WebAssembly GC proposal. This bug affects users who are not using the GC proposal, however, and affects Wasmtime in its default configuration even when the GC proposal is disabled. Wasmtime users using 19.0.0 and after are all affected by this issue. We have released the following Wasmtime versions, all of which have a fix for this bug: * 21.0.2 * 22.0.1 * 23.0.3 * 24.0.1 * 25.0.2. If your application creates and drops Wasmtime types on multiple threads concurrently, there are no known workarounds. Users are encouraged to upgrade to a patched release.
Severity
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/bytecodealliance/wasmtime/secu… | x_refsource_CONFIRM |
| https://github.com/bytecodealliance/wasmtime/pull/7969 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bytecodealliance | wasmtime |
Affected:
>= 19.0.0, < 21.0.2
Affected: >= 22.0.0, < 22.0.1 Affected: >= 23.0.0, < 23.0.3 Affected: >= 24.0.0, < 24.0.1 Affected: >= 25.0.0, < 25.0.2 |
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"title": "Wasmtime race condition could lead to WebAssembly control-flow integrity and type safety violations"
}
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"datePublished": "2024-10-09T18:07:49.686Z",
"dateReserved": "2024-10-03T14:06:12.637Z",
"dateUpdated": "2024-10-09T19:43:53.508Z",
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CVE-2024-49046 (GCVE-0-2024-49046)
Vulnerability from cvelistv5 – Published: 2024-11-12 17:53 – Updated: 2025-07-08 15:41
VLAI
Title
Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
Summary
Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
Severity
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisory |
Impacted products
26 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.6532
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.6532
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.6532
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.2849
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19043.0 , < 10.0.19044.5131
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.4460
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.5131
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.2314
(custom)
|
|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.4460
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.4460
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.1251
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.2314
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.2314
(custom)
|
|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.20826
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.7515
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.7515
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.7515
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.22966
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
Affected:
6.0.6003.0 , < 6.0.6003.22966
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.22966
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 |
Affected:
6.1.7601.0 , < 6.1.7601.27415
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) |
Affected:
6.1.7601.0 , < 6.1.7601.27415
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.25165
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.25165
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.22267
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.22267
(custom)
|
Date Public
2024-11-12 08:00
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CVE-2024-49768 (GCVE-0-2024-49768)
Vulnerability from cvelistv5 – Published: 2024-10-29 14:32 – Updated: 2024-10-29 14:56
VLAI
Title
Waitress has request processing race condition in HTTP pipelining with invalid first request
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recv_bytes (defaults to 8192) long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled (default) we won't read any more requests, and when the first request fails due to a parsing error, we simply close the connection. However when request lookahead is enabled, it is possible to process and receive the first request, start sending the error message back to the client while we read the next request and queue it. This will allow the secondary request to be serviced by the worker thread while the connection should be closed. Waitress 3.0.1 fixes the race condition. As a workaround, disable channel_request_lookahead, this is set to 0 by default disabling this feature.
Severity
9.1 (Critical)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Pylons/waitress/security/advis… | x_refsource_CONFIRM |
| https://github.com/Pylons/waitress/commit/e435901… | x_refsource_MISC |
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CVE-2024-50379 (GCVE-0-2024-50379)
Vulnerability from cvelistv5 – Published: 2024-12-17 12:34 – Updated: 2025-11-03 20:45
VLAI
Title
Apache Tomcat: RCE due to TOCTOU issue in JSP compilation
Summary
Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE on case insensitive file systems when the default servlet is enabled for write (non-default configuration).
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.1, from 10.1.0-M1 through 10.1.33, from 9.0.0.M1 through 9.0.97.
The following versions were EOL at the time the CVE was created but are
known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected.
Users are recommended to upgrade to version 11.0.2, 10.1.34 or 9.0.98, which fixes the issue.
Severity
No CVSS data available.
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/y6lj6q1xnp822g6ro… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.1
(semver)
Affected: 10.1.0-M1 , ≤ 10.1.33 (semver) Affected: 9.0.0.M1 , ≤ 9.0.97 (semver) Affected: 8.5.0 , ≤ 8.5.100 (semver) Unknown: 3 , < 8.5.0 (semver) Unknown: 10.0.0-M1 , ≤ 10.0.27 (semver) |
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CVE-2024-50592 (GCVE-0-2024-50592)
Vulnerability from cvelistv5 – Published: 2024-11-08 12:15 – Updated: 2025-11-03 22:28
VLAI
Title
Local Privilege Escalation via Race Condition
Summary
An attacker with local access the to medical office computer can
escalate his Windows user privileges to "NT AUTHORITY\SYSTEM" by
exploiting a race condition in the Elefant Update Service during the
repair or update process. When using the repair function, the service queries the server for a
list of files and their hashes. In addition, instructions to execute
binaries to finalize the repair process are included. The executables are executed as "NT AUTHORITY\SYSTEM" after they are
copied over to the user writable installation folder (C:\Elefant1). This
means that a user can overwrite either "PostESUUpdate.exe" or
"Update_OpenJava.exe" in the time frame after the copy and before the
execution of the final repair step. The overwritten executable is then executed as "NT AUTHORITY\SYSTEM".
Severity
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://r.sec-consult.com/hasomed | third-party-advisory |
| https://hasomed.de/produkte/elefant/ | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HASOMED | Elefant Software Updater |
Affected:
<1.4.2.1811
(custom)
|
Credits
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CVE-2024-51563 (GCVE-0-2024-51563)
Vulnerability from cvelistv5 – Published: 2024-11-12 14:47 – Updated: 2025-11-03 20:45
VLAI
Title
bhyve(8) virtio_vq_recordon time-of-check to time-of-use race
Summary
The virtio_vq_recordon function is subject to a time-of-check to time-of-use (TOCTOU) race condition.
Severity
6.5 (Medium)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.freebsd.org/advisories/FreeBSD-S… | vendor-advisory |
Impacted products
Date Public
2024-10-29 21:32
Credits
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CVE-2024-53016 (GCVE-0-2024-53016)
Vulnerability from cvelistv5 – Published: 2025-06-03 05:52 – Updated: 2025-06-03 13:32
VLAI
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in Camera Driver
Summary
Memory corruption while processing I2C settings in Camera driver.
Severity
6.6 (Medium)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
Affected:
FastConnect 6800
Affected: FastConnect 6900 Affected: FastConnect 7800 Affected: QCA6391 Affected: QCA6426 Affected: QCA6436 Affected: QSM8250 Affected: SD865 5G Affected: SDM429W Affected: SDX55 Affected: Snapdragon 429 Mobile Platform Affected: Snapdragon 8 Gen 1 Mobile Platform Affected: Snapdragon 865 5G Mobile Platform Affected: Snapdragon 865+ 5G Mobile Platform (SM8250-AB) Affected: Snapdragon 870 5G Mobile Platform (SM8250-AC) Affected: Snapdragon W5+ Gen 1 Wearable Platform Affected: Snapdragon X55 5G Modem-RF System Affected: Snapdragon XR2 5G Platform Affected: SW5100 Affected: SW5100P Affected: SXR2130 Affected: SXR2230P Affected: SXR2250P Affected: WCD9380 Affected: WCD9385 Affected: WCN3620 Affected: WCN3660B Affected: WCN3980 Affected: WCN3988 Affected: WSA8810 Affected: WSA8815 Affected: WSA8830 Affected: WSA8832 Affected: WSA8835 |
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CVE-2024-53018 (GCVE-0-2024-53018)
Vulnerability from cvelistv5 – Published: 2025-06-03 05:52 – Updated: 2025-06-03 13:31
VLAI
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in Camera Driver
Summary
Memory corruption may occur while processing the OIS packet parser.
Severity
6.6 (Medium)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
Affected:
FastConnect 6900
Affected: FastConnect 7800 Affected: SDM429W Affected: Snapdragon 429 Mobile Platform Affected: Snapdragon 8 Gen 1 Mobile Platform Affected: Snapdragon W5+ Gen 1 Wearable Platform Affected: SW5100 Affected: SW5100P Affected: SXR2230P Affected: SXR2250P Affected: WCD9380 Affected: WCD9385 Affected: WCN3620 Affected: WCN3660B Affected: WCN3980 Affected: WCN3988 Affected: WSA8830 Affected: WSA8832 Affected: WSA8835 |
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Mitigation
Phase: Implementation
Description:
- The most basic advice for TOCTOU vulnerabilities is to not perform a check before the use. This does not resolve the underlying issue of the execution of a function on a resource whose state and identity cannot be assured, but it does help to limit the false sense of security given by the check.
Mitigation
Phase: Implementation
Description:
- When the file being altered is owned by the current user and group, set the effective gid and uid to that of the current user and group when executing this statement.
Mitigation
Phase: Architecture and Design
Description:
- Limit the interleaving of operations on files from multiple processes.
Mitigation
Phases: Implementation, Architecture and Design
Description:
- If you cannot perform operations atomically and you must share access to the resource between multiple processes or threads, then try to limit the amount of time (CPU cycles) between the check and use of the resource. This will not fix the problem, but it could make it more difficult for an attack to succeed.
Mitigation
Phase: Implementation
Description:
- Recheck the resource after the use call to verify that the action was taken appropriately.
Mitigation
Phase: Architecture and Design
Description:
- Ensure that some environmental locking mechanism can be used to protect resources effectively.
Mitigation
Phase: Implementation
Description:
- Ensure that locking occurs before the check, as opposed to afterwards, such that the resource, as checked, is the same as it is when in use.
CAPEC-27: Leveraging Race Conditions via Symbolic Links
This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.
CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.