CWE-362
Allowed-with-ReviewConcurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Abstraction: Class · Status: Draft
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
3267 vulnerabilities reference this CWE, most recent first.
GHSA-9853-89F8-Q3CW
Vulnerability from github – Published: 2022-05-24 17:46 – Updated: 2022-05-24 17:46A race condition was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.
{
"affected": [],
"aliases": [
"CVE-2020-27921"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-02T18:15:00Z",
"severity": "HIGH"
},
"details": "A race condition was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.",
"id": "GHSA-9853-89f8-q3cw",
"modified": "2022-05-24T17:46:09Z",
"published": "2022-05-24T17:46:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27921"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT211931"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT212011"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-985W-MQGJ-6GFR
Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-27 06:30In the Linux kernel, the following vulnerability has been resolved:
fuse-uring: Avoid queue->stopped races and set/read that value under lock
There are several readers of queue->stopped that check the value under lock, but fuse_uring_commit_fetch() did not and actually the value was not set under the lock in fuse_uring_abort_end_requests() either. Especially in fuse_uring_commit_fetch it is important to check under a lock, because due to races 'struct fuse_req' might be freed with fuse_request_end, but another thread/cpu might already do teardown work.
{
"affected": [],
"aliases": [
"CVE-2026-64260"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-25T10:17:06Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse-uring: Avoid queue-\u003estopped races and set/read that value under lock\n\nThere are several readers of queue-\u003estopped that check the value\nunder lock, but fuse_uring_commit_fetch() did not and actually\nthe value was not set under the lock in fuse_uring_abort_end_requests()\neither. Especially in fuse_uring_commit_fetch it is important\nto check under a lock, because due to races \u0027struct fuse_req\u0027\nmight be freed with fuse_request_end, but another thread/cpu\nmight already do teardown work.",
"id": "GHSA-985w-mqgj-6gfr",
"modified": "2026-07-27T06:30:31Z",
"published": "2026-07-25T12:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64260"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/39c8e925b207afceffaa5382416ed405e0223a03"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4021a3a79eee551d95fe1e1e7c1b195d34ba8c08"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b70a3aca16934c196f92abb17b01c1647b9bb63c"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9864-VGGR-682G
Vulnerability from github – Published: 2022-11-02 12:00 – Updated: 2022-11-04 12:00A race condition was addressed with improved locking. This issue is fixed in iOS 16.1 and iPadOS 16, macOS Ventura 13. An app with root privileges may be able to execute arbitrary code with kernel privileges.
{
"affected": [],
"aliases": [
"CVE-2022-42831"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-01T20:15:00Z",
"severity": "MODERATE"
},
"details": "A race condition was addressed with improved locking. This issue is fixed in iOS 16.1 and iPadOS 16, macOS Ventura 13. An app with root privileges may be able to execute arbitrary code with kernel privileges.",
"id": "GHSA-9864-vggr-682g",
"modified": "2022-11-04T12:00:22Z",
"published": "2022-11-02T12:00:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-42831"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213488"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213489"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9887-FJ42-HM6Q
Vulnerability from github – Published: 2026-08-11 18:31 – Updated: 2026-08-11 18:31Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-62748"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-11T17:18:27Z",
"severity": "HIGH"
},
"details": "Concurrent execution using shared resource with improper synchronization (\u0027race condition\u0027) in Windows Telephony Service allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-9887-fj42-hm6q",
"modified": "2026-08-11T18:31:18Z",
"published": "2026-08-11T18:31:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-62748"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62748"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-988R-VP4W-29JX
Vulnerability from github – Published: 2022-05-17 05:24 – Updated: 2024-03-21 03:33** DISPUTED ** Race condition in BitDefender Total Security 2010 13.0.20.347 on Windows XP allows local users to bypass kernel-mode hook handlers, and execute dangerous code that would otherwise be blocked by a handler but not blocked by signature-based malware detection, via certain user-space memory changes during hook-handler execution, aka an argument-switch attack or a KHOBE attack. NOTE: this issue is disputed by some third parties because it is a flaw in a protection mechanism for situations where a crafted program has already begun to execute.
{
"affected": [],
"aliases": [
"CVE-2010-5154"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2012-08-25T21:55:00Z",
"severity": "MODERATE"
},
"details": "** DISPUTED ** Race condition in BitDefender Total Security 2010 13.0.20.347 on Windows XP allows local users to bypass kernel-mode hook handlers, and execute dangerous code that would otherwise be blocked by a handler but not blocked by signature-based malware detection, via certain user-space memory changes during hook-handler execution, aka an argument-switch attack or a KHOBE attack. NOTE: this issue is disputed by some third parties because it is a flaw in a protection mechanism for situations where a crafted program has already begun to execute.",
"id": "GHSA-988r-vp4w-29jx",
"modified": "2024-03-21T03:33:09Z",
"published": "2022-05-17T05:24:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2010-5154"
},
{
"type": "WEB",
"url": "http://archives.neohapsis.com/archives/bugtraq/2010-05/0026.html"
},
{
"type": "WEB",
"url": "http://archives.neohapsis.com/archives/fulldisclosure/2010-05/0066.html"
},
{
"type": "WEB",
"url": "http://countermeasures.trendmicro.eu/you-just-cant-trust-a-drunk"
},
{
"type": "WEB",
"url": "http://matousec.com/info/advisories/khobe-8.0-earthquake-for-windows-desktop-security-software.php"
},
{
"type": "WEB",
"url": "http://matousec.com/info/articles/khobe-8.0-earthquake-for-windows-desktop-security-software.php"
},
{
"type": "WEB",
"url": "http://www.f-secure.com/weblog/archives/00001949.html"
},
{
"type": "WEB",
"url": "http://www.osvdb.org/67660"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/39924"
},
{
"type": "WEB",
"url": "http://www.theregister.co.uk/2010/05/07/argument_switch_av_bypass"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-98H8-M6W9-QR4X
Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-03-25 21:30In the Linux kernel, the following vulnerability has been resolved:
functionfs: fix the open/removal races
ffs_epfile_open() can race with removal, ending up with file->private_data pointing to freed object.
There is a total count of opened files on functionfs (both ep0 and dynamic ones) and when it hits zero, dynamic files get removed. Unfortunately, that removal can happen while another thread is in ffs_epfile_open(), but has not incremented the count yet. In that case open will succeed, leaving us with UAF on any subsequent read() or write().
The root cause is that ffs->opened is misused; atomic_dec_and_test() vs. atomic_add_return() is not a good idea, when object remains visible all along.
To untangle that * serialize openers on ffs->mutex (both for ep0 and for dynamic files) * have dynamic ones use atomic_inc_not_zero() and fail if we had zero ->opened; in that case the file we are opening is doomed. * have the inodes of dynamic files marked on removal (from the callback of simple_recursive_removal()) - clear ->i_private there. * have open of dynamic ones verify they hadn't been already removed, along with checking that state is FFS_ACTIVE.
{
"affected": [],
"aliases": [
"CVE-2025-71074"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-13T16:16:06Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfunctionfs: fix the open/removal races\n\nffs_epfile_open() can race with removal, ending up with file-\u003eprivate_data\npointing to freed object.\n\nThere is a total count of opened files on functionfs (both ep0 and\ndynamic ones) and when it hits zero, dynamic files get removed.\nUnfortunately, that removal can happen while another thread is\nin ffs_epfile_open(), but has not incremented the count yet.\nIn that case open will succeed, leaving us with UAF on any subsequent\nread() or write().\n\nThe root cause is that ffs-\u003eopened is misused; atomic_dec_and_test() vs.\natomic_add_return() is not a good idea, when object remains visible all\nalong.\n\nTo untangle that\n\t* serialize openers on ffs-\u003emutex (both for ep0 and for dynamic files)\n\t* have dynamic ones use atomic_inc_not_zero() and fail if we had\nzero -\u003eopened; in that case the file we are opening is doomed.\n\t* have the inodes of dynamic files marked on removal (from the\ncallback of simple_recursive_removal()) - clear -\u003ei_private there.\n\t* have open of dynamic ones verify they hadn\u0027t been already removed,\nalong with checking that state is FFS_ACTIVE.",
"id": "GHSA-98h8-m6w9-qr4x",
"modified": "2026-03-25T21:30:21Z",
"published": "2026-01-13T18:31:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71074"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b49c766856fb5901490de577e046149ebf15e39d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e5bf5ee266633cb18fff6f98f0b7d59a62819eee"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-998F-8276-5GR2
Vulnerability from github – Published: 2025-09-05 18:31 – Updated: 2025-11-26 00:30In the Linux kernel, the following vulnerability has been resolved:
net: kcm: Fix race condition in kcm_unattach()
syzbot found a race condition when kcm_unattach(psock) and kcm_release(kcm) are executed at the same time.
kcm_unattach() is missing a check of the flag kcm->tx_stopped before calling queue_work().
If the kcm has a reserved psock, kcm_unattach() might get executed between cancel_work_sync() and unreserve_psock() in kcm_release(), requeuing kcm->tx_work right before kcm gets freed in kcm_done().
Remove kcm->tx_stopped and replace it by the less error-prone disable_work_sync().
{
"affected": [],
"aliases": [
"CVE-2025-38717"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-04T16:15:41Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: kcm: Fix race condition in kcm_unattach()\n\nsyzbot found a race condition when kcm_unattach(psock)\nand kcm_release(kcm) are executed at the same time.\n\nkcm_unattach() is missing a check of the flag\nkcm-\u003etx_stopped before calling queue_work().\n\nIf the kcm has a reserved psock, kcm_unattach() might get executed\nbetween cancel_work_sync() and unreserve_psock() in kcm_release(),\nrequeuing kcm-\u003etx_work right before kcm gets freed in kcm_done().\n\nRemove kcm-\u003etx_stopped and replace it by the less\nerror-prone disable_work_sync().",
"id": "GHSA-998f-8276-5gr2",
"modified": "2025-11-26T00:30:16Z",
"published": "2025-09-05T18:31:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38717"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/52565a935213cd6a8662ddb8efe5b4219343a25d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7275dc3bb8f91b23125ff3f47b6529935cf46152"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/798733ee5d5788b12e8a52db1519abc17e826f69"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c0bffbc92a1ca3960fb9cdb8e9f75a68468eb308"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-99GR-P997-VR4G
Vulnerability from github – Published: 2023-04-05 21:30 – Updated: 2025-02-13 15:31A race problem was found in fs/proc/task_mmu.c in the memory management sub-component in the Linux kernel. This issue may allow a local attacker with user privilege to cause a denial of service.
{
"affected": [],
"aliases": [
"CVE-2023-1582"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-04-05T20:15:00Z",
"severity": "MODERATE"
},
"details": "A race problem was found in fs/proc/task_mmu.c in the memory management sub-component in the Linux kernel. This issue may allow a local attacker with user privilege to cause a denial of service.",
"id": "GHSA-99gr-p997-vr4g",
"modified": "2025-02-13T15:31:21Z",
"published": "2023-04-05T21:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1582"
},
{
"type": "WEB",
"url": "https://lore.kernel.org/linux-mm/Yg6ac8WlwtnDH6M0%40kroah.com"
},
{
"type": "WEB",
"url": "https://lore.kernel.org/linux-mm/Yg6ac8WlwtnDH6M0@kroah.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-99H2-JH76-MC3F
Vulnerability from github – Published: 2023-01-11 00:30 – Updated: 2023-01-11 00:30Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2023-21543, CVE-2023-21555, CVE-2023-21556, CVE-2023-21679.
{
"affected": [],
"aliases": [
"CVE-2023-21546"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-10T22:15:00Z",
"severity": "HIGH"
},
"details": "Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2023-21543, CVE-2023-21555, CVE-2023-21556, CVE-2023-21679.",
"id": "GHSA-99h2-jh76-mc3f",
"modified": "2023-01-11T00:30:47Z",
"published": "2023-01-11T00:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-21546"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21546"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21546"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-99VH-GVCG-X7Q6
Vulnerability from github – Published: 2022-05-01 23:48 – Updated: 2022-05-01 23:48Launch Services in Apple Mac OS X before 10.5, when Open Safe Files is enabled, allows remote attackers to execute arbitrary code via a symlink attack, probably related to a race condition and automatic execution of a downloaded file.
{
"affected": [],
"aliases": [
"CVE-2008-2311"
],
"database_specific": {
"cwe_ids": [
"CWE-362",
"CWE-59"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2008-07-01T18:41:00Z",
"severity": "HIGH"
},
"details": "Launch Services in Apple Mac OS X before 10.5, when Open Safe Files is enabled, allows remote attackers to execute arbitrary code via a symlink attack, probably related to a race condition and automatic execution of a downloaded file.",
"id": "GHSA-99vh-gvcg-x7q6",
"modified": "2022-05-01T23:48:48Z",
"published": "2022-05-01T23:48:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2008-2311"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/43495"
},
{
"type": "WEB",
"url": "http://lists.apple.com/archives/security-announce/2008//Jun/msg00002.html"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/30802"
},
{
"type": "WEB",
"url": "http://securitytracker.com/id?1020393"
},
{
"type": "WEB",
"url": "http://support.apple.com/kb/HT2163"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/30018"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2008/1981/references"
}
],
"schema_version": "1.4.0",
"severity": []
}
Mitigation
In languages that support it, use synchronization primitives. Only wrap these around critical code to minimize the impact on performance.
Mitigation
Use thread-safe capabilities such as the data access abstraction in Spring.
Mitigation
- Minimize the usage of shared resources in order to remove as much complexity as possible from the control flow and to reduce the likelihood of unexpected conditions occurring.
- Additionally, this will minimize the amount of synchronization necessary and may even help to reduce the likelihood of a denial of service where an attacker may be able to repeatedly trigger a critical section (CWE-400).
Mitigation
When using multithreading and operating on shared variables, only use thread-safe functions.
Mitigation
Use atomic operations on shared variables. Be wary of innocent-looking constructs such as "x++". This may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read, followed by a computation, followed by a write.
Mitigation
Use a mutex if available, but be sure to avoid related weaknesses such as CWE-412.
Mitigation
Avoid double-checked locking (CWE-609) and other implementation errors that arise when trying to avoid the overhead of synchronization.
Mitigation
Disable interrupts or signals over critical parts of the code, but also make sure that the code does not go into a large or infinite loop.
Mitigation
Use the volatile type modifier for critical variables to avoid unexpected compiler optimization or reordering. This does not necessarily solve the synchronization problem, but it can help.
Mitigation MIT-17
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
CAPEC-26: Leveraging Race Conditions
The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with their version and cause the system to read the malicious 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.