Common Weakness Enumeration
CWE-415
AllowedDouble Free
Abstraction: Variant · Status: Draft
The product calls free() twice on the same memory address.
1091 vulnerabilities reference this CWE, most recent first.
GHSA-G943-C7GQ-998H
Vulnerability from github – Published: 2025-07-10 09:32 – Updated: 2025-12-19 18:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
bus: fsl-mc: fix double-free on mc_dev
The blamed commit tried to simplify how the deallocations are done but, in the process, introduced a double-free on the mc_dev variable.
In case the MC device is a DPRC, a new mc_bus is allocated and the mc_dev variable is just a reference to one of its fields. In this circumstance, on the error path only the mc_bus should be freed.
This commit introduces back the following checkpatch warning which is a false-positive.
WARNING: kfree(NULL) is safe and this check is probably not required + if (mc_bus) + kfree(mc_bus);
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-38313"
],
"database_specific": {
"cwe_ids": [
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-10T08:15:30Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: fsl-mc: fix double-free on mc_dev\n\nThe blamed commit tried to simplify how the deallocations are done but,\nin the process, introduced a double-free on the mc_dev variable.\n\nIn case the MC device is a DPRC, a new mc_bus is allocated and the\nmc_dev variable is just a reference to one of its fields. In this\ncircumstance, on the error path only the mc_bus should be freed.\n\nThis commit introduces back the following checkpatch warning which is a\nfalse-positive.\n\nWARNING: kfree(NULL) is safe and this check is probably not required\n+ if (mc_bus)\n+ kfree(mc_bus);",
"id": "GHSA-g943-c7gq-998h",
"modified": "2025-12-19T18:31:05Z",
"published": "2025-07-10T09:32:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38313"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/12e4431e5078847791936820bd39df9e1ee26d2e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1d5baab39e5b09a76870b345cdee7933871b881f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3135e03a92f6b5259d0a7f25f728e9e7866ede3f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4b23c46eb2d88924b93aca647bde9a4b9cf62cf9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7002b954c4a8b9965ba0f139812ee4a6f71beac8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/873d47114fd5e5a1cad2018843671537cc71ac84"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b2057374f326303c86d8423415ab58656eebc695"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d694bf8a9acdbd061596f3e7549bc8cb70750a60"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.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-G9CV-62XC-FJ2V
Vulnerability from github – Published: 2022-05-24 17:49 – Updated: 2022-05-24 17:49
VLAI
Details
There is a pointer double free vulnerability in some versions of CloudEngine 5800, CloudEngine 6800, CloudEngine 7800 and CloudEngine 12800. When a function is called, the same memory pointer is copied to two functional modules. Attackers can exploit this vulnerability by performing a malicious operation to cause the pointer double free. This may lead to module crash, compromising normal service.
{
"affected": [],
"aliases": [
"CVE-2021-22332"
],
"database_specific": {
"cwe_ids": [
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-04-28T13:15:00Z",
"severity": "HIGH"
},
"details": "There is a pointer double free vulnerability in some versions of CloudEngine 5800, CloudEngine 6800, CloudEngine 7800 and CloudEngine 12800. When a function is called, the same memory pointer is copied to two functional modules. Attackers can exploit this vulnerability by performing a malicious operation to cause the pointer double free. This may lead to module crash, compromising normal service.",
"id": "GHSA-g9cv-62xc-fj2v",
"modified": "2022-05-24T17:49:04Z",
"published": "2022-05-24T17:49:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22332"
},
{
"type": "WEB",
"url": "https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210407-01-doublefree-en"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-G9MR-VWVW-4VG9
Vulnerability from github – Published: 2022-05-17 02:42 – Updated: 2022-05-17 02:42
VLAI
Details
In TrustZone in all Android releases from CAF using the Linux kernel, a Double Free vulnerability could potentially exist.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2015-9007"
],
"database_specific": {
"cwe_ids": [
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-06-06T14:29:00Z",
"severity": "HIGH"
},
"details": "In TrustZone in all Android releases from CAF using the Linux kernel, a Double Free vulnerability could potentially exist.",
"id": "GHSA-g9mr-vwvw-4vg9",
"modified": "2022-05-17T02:42:21Z",
"published": "2022-05-17T02:42:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-9007"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2017-05-01"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/98324"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GF42-J9G9-962C
Vulnerability from github – Published: 2024-05-01 06:31 – Updated: 2024-06-03 18:55
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Fix double free of the ha->vp_map pointer
Coverity scan reported potential risk of double free of the pointer ha->vp_map. ha->vp_map was freed in qla2x00_mem_alloc(), and again freed in function qla2x00_mem_free(ha).
Assign NULL to vp_map and kfree take care of NULL.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-26930"
],
"database_specific": {
"cwe_ids": [
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-01T06:15:07Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix double free of the ha-\u003evp_map pointer\n\nCoverity scan reported potential risk of double free of the pointer\nha-\u003evp_map. ha-\u003evp_map was freed in qla2x00_mem_alloc(), and again freed\nin function qla2x00_mem_free(ha).\n\nAssign NULL to vp_map and kfree take care of NULL.",
"id": "GHSA-gf42-j9g9-962c",
"modified": "2024-06-03T18:55:50Z",
"published": "2024-05-01T06:31:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26930"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/825d63164a2e6bacb059a9afb5605425b485413f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b7deb675d674f44e0ddbab87fee8f9f098925e73"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e288285d47784fdcf7c81be56df7d65c6f10c58b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f14cee7a882cb79528f17a2335f53e9fd1848467"
}
],
"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-GFCR-HR3X-V6R9
Vulnerability from github – Published: 2022-05-24 17:35 – Updated: 2022-05-24 17:35
VLAI
Details
A double free vulnerability exists in the Binary File Descriptor (BFD) (aka libbrd) in GNU Binutils 2.34 in the process_symbol_table, as demonstrated in readelf, via a crafted file.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2020-16590"
],
"database_specific": {
"cwe_ids": [
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-12-09T21:15:00Z",
"severity": "MODERATE"
},
"details": "A double free vulnerability exists in the Binary File Descriptor (BFD) (aka libbrd) in GNU Binutils 2.34 in the process_symbol_table, as demonstrated in readelf, via a crafted file.",
"id": "GHSA-gfcr-hr3x-v6r9",
"modified": "2022-05-24T17:35:30Z",
"published": "2022-05-24T17:35:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-16590"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210115-0003"
},
{
"type": "WEB",
"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=25821"
},
{
"type": "WEB",
"url": "https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c98a4545dc7bf2bcaf1de539c4eb84784680eaa4"
}
],
"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-GJJR-QMJQ-GW5C
Vulnerability from github – Published: 2022-05-24 19:09 – Updated: 2022-05-24 19:09
VLAI
Details
A component of the HarmonyOS has a Double Free vulnerability. Local attackers may exploit this vulnerability to cause Root Elevating Privileges.
{
"affected": [],
"aliases": [
"CVE-2021-22425"
],
"database_specific": {
"cwe_ids": [
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-08-03T18:15:00Z",
"severity": "HIGH"
},
"details": "A component of the HarmonyOS has a Double Free vulnerability. Local attackers may exploit this vulnerability to cause Root Elevating Privileges.",
"id": "GHSA-gjjr-qmjq-gw5c",
"modified": "2022-05-24T19:09:48Z",
"published": "2022-05-24T19:09:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22425"
},
{
"type": "WEB",
"url": "https://device.harmonyos.com/cn/docs/security/update/oem_security_update_phone_202106-0000001165452077"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-GMJF-392P-5R44
Vulnerability from github – Published: 2022-05-14 01:46 – Updated: 2022-05-14 01:46
VLAI
Details
In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, freeing device memory in driver probe failure will result in double free issue in power module.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2018-11823"
],
"database_specific": {
"cwe_ids": [
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-11-27T16:29:00Z",
"severity": "HIGH"
},
"details": "In all android releases(Android for MSM, Firefox OS for MSM, QRD Android) from CAF using the linux kernel, freeing device memory in driver probe failure will result in double free issue in power module.",
"id": "GHSA-gmjf-392p-5r44",
"modified": "2022-05-14T01:46:02Z",
"published": "2022-05-14T01:46:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-11823"
},
{
"type": "WEB",
"url": "https://source.codeaurora.org/quic/la/kernel/msm-4.9/commit/?id=4519cc36b1a396dc55c9b43ab6e8736ae4a6f4cf"
},
{
"type": "WEB",
"url": "https://www.codeaurora.org/security-bulletin/2018/11/05/november-2018-code-aurora-forum-security-bulletin"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GP5M-RXRX-PFRJ
Vulnerability from github – Published: 2022-05-24 17:43 – Updated: 2022-05-24 17:43
VLAI
Details
ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.
Severity
7.1 (High)
{
"affected": [],
"aliases": [
"CVE-2021-28041"
],
"database_specific": {
"cwe_ids": [
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-03-05T21:15:00Z",
"severity": "CRITICAL"
},
"details": "ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.",
"id": "GHSA-gp5m-rxrx-pfrj",
"modified": "2022-05-24T17:43:48Z",
"published": "2022-05-24T17:43:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28041"
},
{
"type": "WEB",
"url": "https://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946397ff60d96568db"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KQWGII3LQR4AOTPPFXGMTYE7UDEWIUKI"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TXST2CML2MWY3PNVUXX7FFJE3ATJMNVZ"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202105-35"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210416-0002"
},
{
"type": "WEB",
"url": "https://www.openssh.com/security.html"
},
{
"type": "WEB",
"url": "https://www.openssh.com/txt/release-8.5"
},
{
"type": "WEB",
"url": "https://www.openwall.com/lists/oss-security/2021/03/03/1"
},
{
"type": "WEB",
"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GPX8-C343-GG78
Vulnerability from github – Published: 2022-05-24 17:40 – Updated: 2022-05-24 17:40
VLAI
Details
A flaw was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Values Return Filter control handling, resulting in denial of service (double free and out-of-bounds read).
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2020-36223"
],
"database_specific": {
"cwe_ids": [
"CWE-125",
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-01-26T18:15:00Z",
"severity": "HIGH"
},
"details": "A flaw was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Values Return Filter control handling, resulting in denial of service (double free and out-of-bounds read).",
"id": "GHSA-gpx8-c343-gg78",
"modified": "2022-05-24T17:40:16Z",
"published": "2022-05-24T17:40:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36223"
},
{
"type": "WEB",
"url": "https://bugs.openldap.org/show_bug.cgi?id=9408"
},
{
"type": "WEB",
"url": "https://git.openldap.org/openldap/openldap/-/commit/21981053a1195ae1555e23df4d9ac68d34ede9dd"
},
{
"type": "WEB",
"url": "https://git.openldap.org/openldap/openldap/-/tags/OPENLDAP_REL_ENG_2_4_57"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00005.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210226-0002"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT212529"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT212530"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT212531"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2021/dsa-4845"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2021/May/64"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2021/May/65"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2021/May/70"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GQ6W-H4CF-WPFF
Vulnerability from github – Published: 2026-09-11 15:32 – Updated: 2026-09-11 15:32
VLAI
Details
NetBSD contains a use-after-free and double-free vulnerability in msg_recv_copyin() within the COMPAT_NETBSD32 compatibility layer due to a missing return statement before the cleanup label on the success path. Any local user able to execute a 32-bit binary on a 64-bit NetBSD system can trigger a kernel panic or memory corruption by calling recvmsg() with msg_iovlen between 9 and IOV_MAX, causing the kernel to access a freed iovec buffer and subsequently free the same allocation a second time.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-57842"
],
"database_specific": {
"cwe_ids": [
"CWE-415"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-11T14:17:27Z",
"severity": "HIGH"
},
"details": "NetBSD contains a use-after-free and double-free vulnerability in msg_recv_copyin() within the COMPAT_NETBSD32 compatibility layer due to a missing return statement before the cleanup label on the success path. Any local user able to execute a 32-bit binary on a 64-bit NetBSD system can trigger a kernel panic or memory corruption by calling recvmsg() with msg_iovlen between 9 and IOV_MAX, causing the kernel to access a freed iovec buffer and subsequently free the same allocation a second time.",
"id": "GHSA-gq6w-h4cf-wpff",
"modified": "2026-09-11T15:32:41Z",
"published": "2026-09-11T15:32:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57842"
},
{
"type": "WEB",
"url": "https://gnats.netbsd.org/60373"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/netbsd-compat-netbsd32-double-free-use-after-free-via-recvmsg-msg-iovlen"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
Mitigation
Architecture and Design
Choose a language that provides automatic memory management.
Mitigation
Implementation
Ensure that each allocation is freed only once. After freeing a chunk, set the pointer to NULL to ensure the pointer cannot be freed again. In complicated error conditions, be sure that clean-up routines respect the state of allocation properly. If the language is object oriented, ensure that object destructors delete each chunk of memory only once.
Mitigation
Implementation
Use a static analysis tool to find double free instances.
No CAPEC attack patterns related to this CWE.