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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9821 vulnerabilities reference this CWE, most recent first.
GHSA-Q49G-3G5J-2VJ8
Vulnerability from github – Published: 2026-06-09 18:30 – Updated: 2026-06-09 18:30Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-42984"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-09T17:17:14Z",
"severity": "HIGH"
},
"details": "Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-q49g-3g5j-2vj8",
"modified": "2026-06-09T18:30:46Z",
"published": "2026-06-09T18:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42984"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42984"
}
],
"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-Q4C4-25VX-65FR
Vulnerability from github – Published: 2022-05-13 01:34 – Updated: 2022-05-13 01:34This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of annotations. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-6328.
{
"affected": [],
"aliases": [
"CVE-2018-14315"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-31T20:29:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of annotations. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-6328.",
"id": "GHSA-q4c4-25vx-65fr",
"modified": "2022-05-13T01:34:33Z",
"published": "2022-05-13T01:34:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-14315"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://zerodayinitiative.com/advisories/ZDI-18-775"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q4CG-M7J8-GGR6
Vulnerability from github – Published: 2025-01-11 15:30 – Updated: 2025-11-03 21:32In the Linux kernel, the following vulnerability has been resolved:
s390/cpum_sf: Handle CPU hotplug remove during sampling
CPU hotplug remove handling triggers the following function call sequence:
CPUHP_AP_PERF_S390_SF_ONLINE --> s390_pmu_sf_offline_cpu() ... CPUHP_AP_PERF_ONLINE --> perf_event_exit_cpu()
The s390 CPUMF sampling CPU hotplug handler invokes:
s390_pmu_sf_offline_cpu() +--> cpusf_pmu_setup() +--> setup_pmc_cpu() +--> deallocate_buffers()
This function de-allocates all sampling data buffers (SDBs) allocated for that CPU at event initialization. It also clears the PMU_F_RESERVED bit. The CPU is gone and can not be sampled.
With the event still being active on the removed CPU, the CPU event hotplug support in kernel performance subsystem triggers the following function calls on the removed CPU:
perf_event_exit_cpu() +--> perf_event_exit_cpu_context() +--> __perf_event_exit_context() +--> __perf_remove_from_context() +--> event_sched_out() +--> cpumsf_pmu_del() +--> cpumsf_pmu_stop() +--> hw_perf_event_update()
to stop and remove the event. During removal of the event, the sampling device driver tries to read out the remaining samples from the sample data buffers (SDBs). But they have already been freed (and may have been re-assigned). This may lead to a use after free situation in which case the samples are most likely invalid. In the best case the memory has not been reassigned and still contains valid data.
Remedy this situation and check if the CPU is still in reserved state (bit PMU_F_RESERVED set). In this case the SDBs have not been released an contain valid data. This is always the case when the event is removed (and no CPU hotplug off occured). If the PMU_F_RESERVED bit is not set, the SDB buffers are gone.
{
"affected": [],
"aliases": [
"CVE-2024-57849"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-11T15:15:07Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/cpum_sf: Handle CPU hotplug remove during sampling\n\nCPU hotplug remove handling triggers the following function\ncall sequence:\n\n CPUHP_AP_PERF_S390_SF_ONLINE --\u003e s390_pmu_sf_offline_cpu()\n ...\n CPUHP_AP_PERF_ONLINE --\u003e perf_event_exit_cpu()\n\nThe s390 CPUMF sampling CPU hotplug handler invokes:\n\n s390_pmu_sf_offline_cpu()\n +--\u003e cpusf_pmu_setup()\n +--\u003e setup_pmc_cpu()\n +--\u003e deallocate_buffers()\n\nThis function de-allocates all sampling data buffers (SDBs) allocated\nfor that CPU at event initialization. It also clears the\nPMU_F_RESERVED bit. The CPU is gone and can not be sampled.\n\nWith the event still being active on the removed CPU, the CPU event\nhotplug support in kernel performance subsystem triggers the\nfollowing function calls on the removed CPU:\n\n perf_event_exit_cpu()\n +--\u003e perf_event_exit_cpu_context()\n +--\u003e __perf_event_exit_context()\n\t +--\u003e __perf_remove_from_context()\n\t +--\u003e event_sched_out()\n\t +--\u003e cpumsf_pmu_del()\n\t +--\u003e cpumsf_pmu_stop()\n +--\u003e hw_perf_event_update()\n\nto stop and remove the event. During removal of the event, the\nsampling device driver tries to read out the remaining samples from\nthe sample data buffers (SDBs). But they have already been freed\n(and may have been re-assigned). This may lead to a use after free\nsituation in which case the samples are most likely invalid. In the\nbest case the memory has not been reassigned and still contains\nvalid data.\n\nRemedy this situation and check if the CPU is still in reserved\nstate (bit PMU_F_RESERVED set). In this case the SDBs have not been\nreleased an contain valid data. This is always the case when\nthe event is removed (and no CPU hotplug off occured).\nIf the PMU_F_RESERVED bit is not set, the SDB buffers are gone.",
"id": "GHSA-q4cg-m7j8-ggr6",
"modified": "2025-11-03T21:32:08Z",
"published": "2025-01-11T15:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57849"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/06a92f810df8037ca36157282ddcbefdcaf049b8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/238e3af849dfdcb1faed544349f7025e533f9aab"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/99192c735ed4bfdff0d215ec85c8a87a677cb898"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a0bd7dacbd51c632b8e2c0500b479af564afadf3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a69752f1e5de817941a2ea0609254f6f25acd274"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b5be6a0bb639d165c8418d8dddd8f322587be8be"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/be54e6e0f93a39a9c00478d70d12956a5f3d5b9b"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
}
],
"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-Q4FP-9QM2-CJJF
Vulnerability from github – Published: 2022-05-24 19:09 – Updated: 2022-05-24 19:09This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14531.
{
"affected": [],
"aliases": [
"CVE-2021-34849"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-08-04T16:15:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.0.0.49893. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14531.",
"id": "GHSA-q4fp-9qm2-cjjf",
"modified": "2022-05-24T19:09:56Z",
"published": "2022-05-24T19:09:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34849"
},
{
"type": "WEB",
"url": "https://www.foxit.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-931"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-Q4FQ-38GR-CCP3
Vulnerability from github – Published: 2025-02-04 21:32 – Updated: 2025-02-08 00:32Use after free in V8 in Google Chrome prior to 133.0.6943.53 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2025-0445"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-04T19:15:32Z",
"severity": "MODERATE"
},
"details": "Use after free in V8 in Google Chrome prior to 133.0.6943.53 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-q4fq-38gr-ccp3",
"modified": "2025-02-08T00:32:16Z",
"published": "2025-02-04T21:32:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-0445"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2025/02/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/392521083"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q4G4-RW2V-X4V7
Vulnerability from github – Published: 2026-07-01 21:36 – Updated: 2026-07-01 21:36Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-50521"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-01T21:17:03Z",
"severity": "HIGH"
},
"details": "Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.",
"id": "GHSA-q4g4-rw2v-x4v7",
"modified": "2026-07-01T21:36:20Z",
"published": "2026-07-01T21:36:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50521"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50521"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-Q4GV-76QV-QH34
Vulnerability from github – Published: 2024-01-08 15:30 – Updated: 2025-11-04 21:30Multiple use-after-free vulnerabilities exist in the VCD get_vartoken realloc functionality of GTKWave 3.3.115. A specially crafted .vcd file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the use-after-free when triggered via the GUI's legacy VCD parsing code.
{
"affected": [],
"aliases": [
"CVE-2023-37574"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-08T15:15:17Z",
"severity": "HIGH"
},
"details": "Multiple use-after-free vulnerabilities exist in the VCD get_vartoken realloc functionality of GTKWave 3.3.115. A specially crafted .vcd file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger these vulnerabilities.This vulnerability concerns the use-after-free when triggered via the GUI\u0027s legacy VCD parsing code.",
"id": "GHSA-q4gv-76qv-qh34",
"modified": "2025-11-04T21:30:58Z",
"published": "2024-01-08T15:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37574"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/04/msg00007.html"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1806"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1806"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q4H3-RM8F-C8QR
Vulnerability from github – Published: 2024-05-06 12:30 – Updated: 2024-05-06 12:30An unauthenticated local attacker may trick a user to open corrupted project files to crash the system due to use after free vulnerability.
{
"affected": [],
"aliases": [
"CVE-2023-49676"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-06T12:15:08Z",
"severity": "MODERATE"
},
"details": "An unauthenticated local attacker may trick a user to open corrupted project files to crash the system due to use after free vulnerability.",
"id": "GHSA-q4h3-rm8f-c8qr",
"modified": "2024-05-06T12:30:26Z",
"published": "2024-05-06T12:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49676"
},
{
"type": "WEB",
"url": "https://cert.vde.com/en/advisories/VDE-2024-024"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q4HP-86WF-HJ44
Vulnerability from github – Published: 2024-04-04 09:30 – Updated: 2024-12-20 18:31In the Linux kernel, the following vulnerability has been resolved:
tls: fix use-after-free on failed backlog decryption
When the decrypt request goes to the backlog and crypto_aead_decrypt returns -EBUSY, tls_do_decryption will wait until all async decryptions have completed. If one of them fails, tls_do_decryption will return -EBADMSG and tls_decrypt_sg jumps to the error path, releasing all the pages. But the pages have been passed to the async callback, and have already been released by tls_decrypt_done.
The only true async case is when crypto_aead_decrypt returns -EINPROGRESS. With -EBUSY, we already waited so we can tell tls_sw_recvmsg that the data is available for immediate copy, but we need to notify tls_decrypt_sg (via the new ->async_done flag) that the memory has already been released.
{
"affected": [],
"aliases": [
"CVE-2024-26800"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-04T09:15:09Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix use-after-free on failed backlog decryption\n\nWhen the decrypt request goes to the backlog and crypto_aead_decrypt\nreturns -EBUSY, tls_do_decryption will wait until all async\ndecryptions have completed. If one of them fails, tls_do_decryption\nwill return -EBADMSG and tls_decrypt_sg jumps to the error path,\nreleasing all the pages. But the pages have been passed to the async\ncallback, and have already been released by tls_decrypt_done.\n\nThe only true async case is when crypto_aead_decrypt returns\n -EINPROGRESS. With -EBUSY, we already waited so we can tell\ntls_sw_recvmsg that the data is available for immediate copy, but we\nneed to notify tls_decrypt_sg (via the new -\u003easync_done flag) that the\nmemory has already been released.",
"id": "GHSA-q4hp-86wf-hj44",
"modified": "2024-12-20T18:31:29Z",
"published": "2024-04-04T09:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26800"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/13114dc5543069f7b97991e3b79937b6da05f5b0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1ac9fb84bc7ecd4bc6428118301d9d864d2a58d1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/81be85353b0f5a7b660635634b655329b429eefe"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f2b85a4cc763841843de693bbd7308fe9a2c4c89"
}
],
"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-Q4J4-5Q6V-59P6
Vulnerability from github – Published: 2022-02-12 00:00 – Updated: 2023-04-19 18:31Possible use after free scenario in compute offloads to DSP while multiple calls spawn a dynamic process in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
{
"affected": [],
"aliases": [
"CVE-2021-35077"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-02-11T11:15:00Z",
"severity": "HIGH"
},
"details": "Possible use after free scenario in compute offloads to DSP while multiple calls spawn a dynamic process in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile",
"id": "GHSA-q4j4-5q6v-59p6",
"modified": "2023-04-19T18:31:06Z",
"published": "2022-02-12T00:00:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-35077"
},
{
"type": "WEB",
"url": "https://www.qualcomm.com/company/product-security/bulletins/february-2022-bulletin"
}
],
"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"
}
]
}
Mitigation
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
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.