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.
2922 vulnerabilities reference this CWE, most recent first.
GHSA-F7GX-3PF8-Q7F6
Vulnerability from github – Published: 2022-05-01 18:14 – Updated: 2025-04-09 03:43Race condition in gdImageStringFTEx (gdft_draw_bitmap) in gdft.c in the GD Graphics Library (libgd) before 2.0.35 allows user-assisted remote attackers to cause a denial of service (crash) via unspecified vectors, possibly involving truetype font (TTF) support.
{
"affected": [],
"aliases": [
"CVE-2007-3478"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2007-06-28T18:30:00Z",
"severity": "MODERATE"
},
"details": "Race condition in gdImageStringFTEx (gdft_draw_bitmap) in gdft.c in the GD Graphics Library (libgd) before 2.0.35 allows user-assisted remote attackers to cause a denial of service (crash) via unspecified vectors, possibly involving truetype font (TTF) support.",
"id": "GHSA-f7gx-3pf8-q7f6",
"modified": "2025-04-09T03:43:26Z",
"published": "2022-05-01T18:14:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2007-3478"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=277421"
},
{
"type": "WEB",
"url": "https://issues.rpath.com/browse/RPL-1643"
},
{
"type": "WEB",
"url": "http://bugs.libgd.org/?do=details\u0026task_id=48"
},
{
"type": "WEB",
"url": "http://bugs.php.net/bug.php?id=40578"
},
{
"type": "WEB",
"url": "http://fedoranews.org/updates/FEDORA-2007-205.shtml"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052848.html"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052854.html"
},
{
"type": "WEB",
"url": "http://osvdb.org/37740"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/25855"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/26272"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/26390"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/26415"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/26467"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/26663"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/26766"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/26856"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/30168"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/42813"
},
{
"type": "WEB",
"url": "http://security.gentoo.org/glsa/glsa-200708-05.xml"
},
{
"type": "WEB",
"url": "http://security.gentoo.org/glsa/glsa-200711-34.xml"
},
{
"type": "WEB",
"url": "http://security.gentoo.org/glsa/glsa-200805-13.xml"
},
{
"type": "WEB",
"url": "http://www.libgd.org/ReleaseNote020035"
},
{
"type": "WEB",
"url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:153"
},
{
"type": "WEB",
"url": "http://www.mandriva.com/security/advisories?name=MDKSA-2007:164"
},
{
"type": "WEB",
"url": "http://www.novell.com/linux/security/advisories/2007_15_sr.html"
},
{
"type": "WEB",
"url": "http://www.redhat.com/archives/fedora-package-announce/2007-September/msg00311.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/archive/1/478796/100/0/threaded"
},
{
"type": "WEB",
"url": "http://www.trustix.org/errata/2007/0024"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2007/2336"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2011/0022"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-F7H5-CXH9-H5WH
Vulnerability from github – Published: 2022-05-01 18:26 – Updated: 2022-05-01 18:26Race condition in WebCore in Apple Mac OS X 10.4 through 10.4.10 allows remote attackers to obtain information for forms from other sites via unknown vectors related to "page transitions" in Safari.
{
"affected": [],
"aliases": [
"CVE-2007-4696"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2007-11-15T01:46:00Z",
"severity": "MODERATE"
},
"details": "Race condition in WebCore in Apple Mac OS X 10.4 through 10.4.10 allows remote attackers to obtain information for forms from other sites via unknown vectors related to \"page transitions\" in Safari.",
"id": "GHSA-f7h5-cxh9-h5wh",
"modified": "2022-05-01T18:26:10Z",
"published": "2022-05-01T18:26:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2007-4696"
},
{
"type": "WEB",
"url": "http://docs.info.apple.com/article.html?artnum=307041"
},
{
"type": "WEB",
"url": "http://lists.apple.com/archives/security-announce/2007/Nov/msg00002.html"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/27643"
},
{
"type": "WEB",
"url": "http://securitytracker.com/id?1018948"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/26444"
},
{
"type": "WEB",
"url": "http://www.us-cert.gov/cas/techalerts/TA07-319A.html"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2007/3868"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-F7JR-49W7-3CVM
Vulnerability from github – Published: 2022-05-24 19:08 – Updated: 2022-05-24 19:08In several functions of the V8 library, there is a possible use after free due to a race condition. This could lead to remote code execution in an unprivileged process with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-9 Android-11 Android-8.1Android ID: A-162604069
{
"affected": [],
"aliases": [
"CVE-2021-0514"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-14T14:15:00Z",
"severity": "HIGH"
},
"details": "In several functions of the V8 library, there is a possible use after free due to a race condition. This could lead to remote code execution in an unprivileged process with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-9 Android-11 Android-8.1Android ID: A-162604069",
"id": "GHSA-f7jr-49w7-3cvm",
"modified": "2022-05-24T19:08:01Z",
"published": "2022-05-24T19:08:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-0514"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2021-07-01"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-F7MM-6XGV-FC2V
Vulnerability from github – Published: 2022-05-13 01:52 – Updated: 2022-05-13 01:52An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "NSURLSession" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.
{
"affected": [],
"aliases": [
"CVE-2018-4166"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-04-03T06:29:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the \"NSURLSession\" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.",
"id": "GHSA-f7mm-6xgv-fc2v",
"modified": "2022-05-13T01:52:37Z",
"published": "2022-05-13T01:52:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-4166"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT208692"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT208693"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT208696"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT208698"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1040604"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1040608"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-F7P4-H976-CH7Q
Vulnerability from github – Published: 2025-09-11 18:35 – Updated: 2026-05-12 15:31In the Linux kernel, the following vulnerability has been resolved:
btrfs: qgroup: fix race between quota disable and quota rescan ioctl
There's a race between a task disabling quotas and another running the rescan ioctl that can result in a use-after-free of qgroup records from the fs_info->qgroup_tree rbtree.
This happens as follows:
1) Task A enters btrfs_ioctl_quota_rescan() -> btrfs_qgroup_rescan();
2) Task B enters btrfs_quota_disable() and calls btrfs_qgroup_wait_for_completion(), which does nothing because at that point fs_info->qgroup_rescan_running is false (it wasn't set yet by task A);
3) Task B calls btrfs_free_qgroup_config() which starts freeing qgroups from fs_info->qgroup_tree without taking the lock fs_info->qgroup_lock;
4) Task A enters qgroup_rescan_zero_tracking() which starts iterating the fs_info->qgroup_tree tree while holding fs_info->qgroup_lock, but task B is freeing qgroup records from that tree without holding the lock, resulting in a use-after-free.
Fix this by taking fs_info->qgroup_lock at btrfs_free_qgroup_config(). Also at btrfs_qgroup_rescan() don't start the rescan worker if quotas were already disabled.
{
"affected": [],
"aliases": [
"CVE-2025-39759"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-11T17:15:39Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: qgroup: fix race between quota disable and quota rescan ioctl\n\nThere\u0027s a race between a task disabling quotas and another running the\nrescan ioctl that can result in a use-after-free of qgroup records from\nthe fs_info-\u003eqgroup_tree rbtree.\n\nThis happens as follows:\n\n1) Task A enters btrfs_ioctl_quota_rescan() -\u003e btrfs_qgroup_rescan();\n\n2) Task B enters btrfs_quota_disable() and calls\n btrfs_qgroup_wait_for_completion(), which does nothing because at that\n point fs_info-\u003eqgroup_rescan_running is false (it wasn\u0027t set yet by\n task A);\n\n3) Task B calls btrfs_free_qgroup_config() which starts freeing qgroups\n from fs_info-\u003eqgroup_tree without taking the lock fs_info-\u003eqgroup_lock;\n\n4) Task A enters qgroup_rescan_zero_tracking() which starts iterating\n the fs_info-\u003eqgroup_tree tree while holding fs_info-\u003eqgroup_lock,\n but task B is freeing qgroup records from that tree without holding\n the lock, resulting in a use-after-free.\n\nFix this by taking fs_info-\u003eqgroup_lock at btrfs_free_qgroup_config().\nAlso at btrfs_qgroup_rescan() don\u0027t start the rescan worker if quotas\nwere already disabled.",
"id": "GHSA-f7p4-h976-ch7q",
"modified": "2026-05-12T15:31:06Z",
"published": "2025-09-11T18:35:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39759"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2fd0f5ceb997f90f4332ccbab6c7e907e6b2d0eb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7cda0fdde5d9890976861421d207870500f9aace"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b172535ccba12f0cf7d23b3b840989de47fc104d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c38028ce0d0045ca600b6a8345a0ff92bfb47b66"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dd0b28d877b293b1d7f8727a7de08ae36b6b9ef0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e1249667750399a48cafcf5945761d39fa584edf"
},
{
"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:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-F86G-X5MJ-QG95
Vulnerability from github – Published: 2022-05-17 04:07 – Updated: 2022-05-17 04:07Race condition in the TLS implementation in MainApp in the management interface in Cisco Intrusion Prevention System (IPS) Software before 7.3(3)E4 allows remote attackers to cause a denial of service (process hang) by establishing many HTTPS sessions, aka Bug ID CSCuq40652.
{
"affected": [],
"aliases": [
"CVE-2015-0654"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2015-03-13T01:59:00Z",
"severity": "HIGH"
},
"details": "Race condition in the TLS implementation in MainApp in the management interface in Cisco Intrusion Prevention System (IPS) Software before 7.3(3)E4 allows remote attackers to cause a denial of service (process hang) by establishing many HTTPS sessions, aka Bug ID CSCuq40652.",
"id": "GHSA-f86g-x5mj-qg95",
"modified": "2022-05-17T04:07:46Z",
"published": "2022-05-17T04:07:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-0654"
},
{
"type": "WEB",
"url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150311-ips"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1031908"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-F892-WW2F-8858
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-50503"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:57Z",
"severity": "HIGH"
},
"details": "Concurrent execution using shared resource with improper synchronization (\u0027race condition\u0027) in Windows Runtime allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-f892-ww2f-8858",
"modified": "2026-07-14T18:32:28Z",
"published": "2026-07-14T18:32:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50503"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50503"
}
],
"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-F894-WGVP-QH5G
Vulnerability from github – Published: 2022-05-13 01:05 – Updated: 2025-04-12 12:48Race condition in the ssl3_get_new_session_ticket function in ssl/s3_clnt.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b, when used for a multi-threaded client, allows remote attackers to cause a denial of service (double free and application crash) or possibly have unspecified other impact by providing a NewSessionTicket during an attempt to reuse a ticket that had been obtained earlier.
{
"affected": [],
"aliases": [
"CVE-2015-1791"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2015-06-12T19:59:00Z",
"severity": "MODERATE"
},
"details": "Race condition in the ssl3_get_new_session_ticket function in ssl/s3_clnt.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b, when used for a multi-threaded client, allows remote attackers to cause a denial of service (double free and application crash) or possibly have unspecified other impact by providing a NewSessionTicket during an attempt to reuse a ticket that had been obtained earlier.",
"id": "GHSA-f894-wgvp-qh5g",
"modified": "2025-04-12T12:48:47Z",
"published": "2022-05-13T01:05:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-1791"
},
{
"type": "WEB",
"url": "https://github.com/openssl/openssl/commit/98ece4eebfb6cd45cc8d550c6ac0022965071afc"
},
{
"type": "WEB",
"url": "https://www.openssl.org/news/secadv_20150611.txt"
},
{
"type": "WEB",
"url": "https://www.arista.com/en/support/advisories-notices/security-advisories/1144-security-advisory-11"
},
{
"type": "WEB",
"url": "https://support.citrix.com/article/CTX216642"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT205031"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201506-02"
},
{
"type": "WEB",
"url": "https://openssl.org/news/secadv/20150611.txt"
},
{
"type": "WEB",
"url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10122"
},
{
"type": "WEB",
"url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05353965"
},
{
"type": "WEB",
"url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05184351"
},
{
"type": "WEB",
"url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380"
},
{
"type": "WEB",
"url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157667"
},
{
"type": "WEB",
"url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05150888"
},
{
"type": "WEB",
"url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05131044"
},
{
"type": "WEB",
"url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
},
{
"type": "WEB",
"url": "https://bto.bluecoat.com/security-advisory/sa98"
},
{
"type": "WEB",
"url": "http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015"
},
{
"type": "WEB",
"url": "http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc"
},
{
"type": "WEB",
"url": "http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10694"
},
{
"type": "WEB",
"url": "http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10733"
},
{
"type": "WEB",
"url": "http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160436.html"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160647.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00004.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00006.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00007.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html"
},
{
"type": "WEB",
"url": "http://marc.info/?l=bugtraq\u0026m=143880121627664\u0026w=2"
},
{
"type": "WEB",
"url": "http://marc.info/?l=bugtraq\u0026m=144050155601375\u0026w=2"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2015-1115.html"
},
{
"type": "WEB",
"url": "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150612-openssl"
},
{
"type": "WEB",
"url": "http://www-304.ibm.com/support/docview.wss?uid=swg21960041"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2015/dsa-3287"
},
{
"type": "WEB",
"url": "http://www.fortiguard.com/advisory/2015-06-11-fortinet-vulnerability-openssl-vulnerabilities-june-2015"
},
{
"type": "WEB",
"url": "http://www.fortiguard.com/advisory/openssl-vulnerabilities-june-2015"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/75161"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/91787"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1032479"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-2639-1"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-F899-4MR4-FQPV
Vulnerability from github – Published: 2024-01-10 09:30 – Updated: 2024-01-19 19:42Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.2.0.
Under normal circumstances, a user can only bookmark a question once, and will only increase the number of questions bookmarked once. However, repeat submissions through the script can increase the number of collection of the question many times.
Users are recommended to upgrade to version [1.2.1], which fixes the issue.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/apache/incubator-answer"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-49619"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": true,
"github_reviewed_at": "2024-01-10T15:50:45Z",
"nvd_published_at": "2024-01-10T09:15:44Z",
"severity": "LOW"
},
"details": "Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027) vulnerability in Apache Answer.\n\nThis issue affects Apache Answer: through 1.2.0.\n\nUnder normal circumstances, a user can only bookmark a question once, and will only increase the number of questions bookmarked once. However, repeat submissions through the script can increase the number of collection of the question many times.\n\nUsers are recommended to upgrade to version [1.2.1], which fixes the issue.",
"id": "GHSA-f899-4mr4-fqpv",
"modified": "2024-01-19T19:42:22Z",
"published": "2024-01-10T09:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49619"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/incubator-answer"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/nscrl3c7pn68q4j73y3ottql6n5x3hd4"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/01/10/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "Apache Answer Race Condition vulnerability"
}
GHSA-F8M7-RC76-GPHG
Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-06-16 03:30In the Linux kernel, the following vulnerability has been resolved:
hwrng: core - use RCU and work_struct to fix race condition
Currently, hwrng_fill is not cleared until the hwrng_fillfn() thread exits. Since hwrng_unregister() reads hwrng_fill outside the rng_mutex lock, a concurrent hwrng_unregister() may call kthread_stop() again on the same task.
Additionally, if hwrng_unregister() is called immediately after hwrng_register(), the stopped thread may have never been executed. Thus, hwrng_fill remains dirty even after hwrng_unregister() returns. In this case, subsequent calls to hwrng_register() will fail to start new threads, and hwrng_unregister() will call kthread_stop() on the same freed task. In both cases, a use-after-free occurs:
refcount_t: addition on 0; use-after-free. WARNING: ... at lib/refcount.c:25 refcount_warn_saturate+0xec/0x1c0 Call Trace: kthread_stop+0x181/0x360 hwrng_unregister+0x288/0x380 virtrng_remove+0xe3/0x200
This patch fixes the race by protecting the global hwrng_fill pointer inside the rng_mutex lock, so that hwrng_fillfn() thread is stopped only once, and calls to kthread_run() and kthread_stop() are serialized with the lock held.
To avoid deadlock in hwrng_fillfn() while being stopped with the lock held, we convert current_rng to RCU, so that get_current_rng() can read current_rng without holding the lock. To remove the lock from put_rng(), we also delay the actual cleanup into a work_struct.
Since get_current_rng() no longer returns ERR_PTR values, the IS_ERR() checks are removed from its callers.
With hwrng_fill protected by the rng_mutex lock, hwrng_fillfn() can no longer clear hwrng_fill itself. Therefore, if hwrng_fillfn() returns directly after current_rng is dropped, kthread_stop() would be called on a freed task_struct later. To fix this, hwrng_fillfn() calls schedule() now to keep the task alive until being stopped. The kthread_stop() call is also moved from hwrng_unregister() to drop_current_rng(), ensuring kthread_stop() is called on all possible paths where current_rng becomes NULL, so that the thread would not wait forever.
{
"affected": [],
"aliases": [
"CVE-2026-45949"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-27T14:17:11Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: core - use RCU and work_struct to fix race condition\n\nCurrently, hwrng_fill is not cleared until the hwrng_fillfn() thread\nexits. Since hwrng_unregister() reads hwrng_fill outside the rng_mutex\nlock, a concurrent hwrng_unregister() may call kthread_stop() again on\nthe same task.\n\nAdditionally, if hwrng_unregister() is called immediately after\nhwrng_register(), the stopped thread may have never been executed. Thus,\nhwrng_fill remains dirty even after hwrng_unregister() returns. In this\ncase, subsequent calls to hwrng_register() will fail to start new\nthreads, and hwrng_unregister() will call kthread_stop() on the same\nfreed task. In both cases, a use-after-free occurs:\n\nrefcount_t: addition on 0; use-after-free.\nWARNING: ... at lib/refcount.c:25 refcount_warn_saturate+0xec/0x1c0\nCall Trace:\n kthread_stop+0x181/0x360\n hwrng_unregister+0x288/0x380\n virtrng_remove+0xe3/0x200\n\nThis patch fixes the race by protecting the global hwrng_fill pointer\ninside the rng_mutex lock, so that hwrng_fillfn() thread is stopped only\nonce, and calls to kthread_run() and kthread_stop() are serialized\nwith the lock held.\n\nTo avoid deadlock in hwrng_fillfn() while being stopped with the lock\nheld, we convert current_rng to RCU, so that get_current_rng() can read\ncurrent_rng without holding the lock. To remove the lock from put_rng(),\nwe also delay the actual cleanup into a work_struct.\n\nSince get_current_rng() no longer returns ERR_PTR values, the IS_ERR()\nchecks are removed from its callers.\n\nWith hwrng_fill protected by the rng_mutex lock, hwrng_fillfn() can no\nlonger clear hwrng_fill itself. Therefore, if hwrng_fillfn() returns\ndirectly after current_rng is dropped, kthread_stop() would be called on\na freed task_struct later. To fix this, hwrng_fillfn() calls schedule()\nnow to keep the task alive until being stopped. The kthread_stop() call\nis also moved from hwrng_unregister() to drop_current_rng(), ensuring\nkthread_stop() is called on all possible paths where current_rng becomes\nNULL, so that the thread would not wait forever.",
"id": "GHSA-f8m7-rc76-gphg",
"modified": "2026-06-16T03:30:32Z",
"published": "2026-05-27T15:33:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45949"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ad38f2cdfef9a2f2899c30cad269baec5bfd4a5d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cc2f39d6ac48e6e3cb2d6240bc0d6df839dd0828"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d5b7730f06994499632026c30e38e0317c4569e2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dcf416eb88eafe1e3c0f920a14bdffd10bc4d259"
}
],
"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"
}
]
}
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.