{"id":"CVE-2021-41495","aliases":["AZL-7045","CLSA-2026-1789381947","CLSA-2026-1789474848","CLSA-2026-1793175147","CLSA-2026-1793175390","CLSA-2026-1793694087","CLSA-2026-1793694742","CLSA-2026-1793700288","DEBIAN-CVE-2021-41495","EUVD-2021-0152","GHSA-5545-2q6w-2gh6","OESA-2022-1522","PYSEC-2021-856","RHSA-2022:8852","RHSA-2022:8861","SUSE-SU-2022:1064-1","SUSE-SU-2022:1064-2","SUSE-SU-2022:2441-1","SUSE-SU-2022:2645-1","SUSE-SU-2022:2646-1","SUSE-SU-2022:2793-1","SUSE-SU-2025:0424-1","TUXVUL-2026-10001","TUXVUL-2026-10002","TUXVUL-2026-10003","TUXVUL-2026-10004","TUXVUL-2026-10005","TUXVUL-2026-10006","TUXVUL-2026-10007","TUXVUL-2026-10008","UBUNTU-CVE-2021-41495","USN-5763-1","openSUSE-SU-2022:1064-1","openSUSE-SU-2024:13220-1","openSUSE-SU-2024:14311-1","openSUSE-SU-2026:11371-1"],"status":"disputed","title":"NumPy NULL Pointer Dereference","description":"Null Pointer Dereference vulnerability exists in numpy.sort in NumPy \u0026lt and 1.19 in the PyArray_DescrNew function due to missing return-value validation, which allows attackers to conduct DoS attacks by repetitively creating sort arrays. NOTE: While correct that validation is missing, an error can only occur due to an exhaustion of memory. If the user can exhaust memory, they are already privileged. Further, it should be practically impossible to construct an attack which can target the memory exhaustion to occur at exactly this place","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01241,"percentile":0.69417,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2021-12-17T19:25:19Z","modified":"2026-11-03T13:30:03Z","fixes":[{"ecosystem":"PyPI","package":"numpy","fixed_in":["1.19","1.19.1"],"sources":["ghsa","osv"]},{"ecosystem":"Azure Linux:2","package":"numpy","fixed_in":["1.22.0-1"],"sources":["osv"]},{"ecosystem":"TuxCare:PyPI","package":"numpy","fixed_in":["1.15.4.post3+tuxcare","2.1.3.post1+tuxcare","2.0.2.post1+tuxcare","2.2.6.post1+tuxcare","1.26.4.post1+tuxcare"],"sources":["osv"]},{"ecosystem":"Red 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Fixed in 1.16.0.post3+tuxcare.","status":"published","published":"2026-09-14T10:32:27Z","modified":"2026-10-15T09:48:01.742067297Z","updated_at":"2026-11-02T15:43:47.938828Z"},{"id":"CLSA-2026-1789474848","title":"TuxCare security update for numpy (1 CVE)","description":"TuxCare rebuilt numpy to address 1 CVE. Fixed in 1.15.4.post3+tuxcare.","status":"published","published":"2026-09-15T12:20:48Z","modified":"2026-10-15T09:48:01.961002664Z","updated_at":"2026-11-02T15:43:47.938828Z"},{"id":"CLSA-2026-1793175147","title":"TuxCare security update for numpy (8 CVEs)","description":"TuxCare rebuilt numpy to address 8 CVEs. Fixed in 2.1.3.post1+tuxcare.","status":"published","published":"2026-10-28T08:12:27Z","modified":"2026-10-28T13:45:02.692353703Z","updated_at":"2026-11-02T15:43:55.34846Z"},{"id":"CLSA-2026-1793175390","title":"TuxCare security update for numpy (8 CVEs)","description":"TuxCare rebuilt numpy to address 8 CVEs. Fixed in 2.0.2.post1+tuxcare.","status":"published","published":"2026-10-28T08:16:30Z","modified":"2026-10-28T13:45:02.68137776Z","updated_at":"2026-11-02T15:43:55.34846Z"},{"id":"CLSA-2026-1793694087","title":"TuxCare security update for numpy (7 CVEs)","description":"TuxCare rebuilt numpy to address 7 CVEs. Fixed in 2.2.6.post1+tuxcare.","status":"published","published":"2026-11-03T09:21:28Z","modified":"2026-11-03T13:30:03.168418747Z","updated_at":"2026-11-03T14:04:50.729288Z"},{"id":"CLSA-2026-1793694742","title":"TuxCare security update for numpy (5 CVEs)","description":"TuxCare rebuilt numpy to address 5 CVEs. Fixed in 1.26.4.post1+tuxcare.","status":"published","published":"2026-11-03T09:32:23Z","modified":"2026-11-03T13:30:02.620682923Z","updated_at":"2026-11-03T14:04:50.729288Z"},{"id":"CLSA-2026-1793700288","title":"TuxCare security update for numpy (7 CVEs)","description":"TuxCare rebuilt numpy to address 7 CVEs. Fixed in 1.21.6.post1+tuxcare.","status":"published","published":"2026-11-03T11:04:49Z","modified":"2026-11-03T13:30:03.170920694Z","updated_at":"2026-11-03T14:04:50.729288Z"},{"id":"openSUSE-SU-2022:1064-1","title":"Security update for python2-numpy","description":"This update for python2-numpy fixes the following issues:\n\n- CVE-2021-33430: Fixed buffer overflow that could lead to DoS in PyArray_NewFromDescr_int function of ctors.c (bsc#1193913).\n- CVE-2021-41496: Fixed buffer overflow that could lead to DoS in array_from_pyobj function of fortranobject.c (bsc#1193907).\n- CVE-2021-41495: Fixed Null Pointer Dereference in numpy.sort due to missing return value validation (bsc#1193911).\n","status":"published","published":"2022-09-12T11:08:44Z","modified":"2026-02-04T04:25:28.686127Z","updated_at":"2026-11-02T16:58:32.653274Z"},{"id":"openSUSE-SU-2024:13220-1","title":"python310-numpy-1.25.2-2.1 on GA media","description":"These are all security issues fixed in the python310-numpy-1.25.2-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:12:54.210171Z","updated_at":"2026-11-02T16:58:36.025801Z"},{"id":"openSUSE-SU-2024:14311-1","title":"python310-numpy1-1.26.4-1.1 on GA media","description":"These are all security issues fixed in the python310-numpy1-1.26.4-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-09-04T00:00:00Z","modified":"2026-02-04T02:59:21.451315Z","updated_at":"2026-11-02T16:58:36.662953Z"},{"id":"openSUSE-SU-2026:11371-1","title":"python313-numpy-2.4.6-1.1 on GA media","description":"These are all security issues fixed in the python313-numpy-2.4.6-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-07-24T00:00:00Z","modified":"2026-07-25T18:24:27.807636812Z","updated_at":"2026-11-02T16:58:39.516824Z"},{"id":"PYSEC-2021-856","description":"Null Pointer Dereference vulnerability exists in numpy.sort in NumPy \u0026lt and 1.19 in the PyArray_DescrNew function due to missing return-value validation, which allows attackers to conduct DoS attacks by repetitively creating sort arrays.","status":"published","published":"2021-12-17T20:15:00Z","modified":"2023-11-08T04:06:59.212424Z","updated_at":"2026-11-02T15:52:53.449407Z"},{"id":"SUSE-SU-2022:1064-1","title":"Security update for python2-numpy","description":"This update for python2-numpy fixes the following issues:\n\n- CVE-2021-33430: Fixed buffer overflow that could lead to DoS in PyArray_NewFromDescr_int function of ctors.c (bsc#1193913).\n- CVE-2021-41496: Fixed buffer overflow that could lead to DoS in array_from_pyobj function of fortranobject.c (bsc#1193907).\n- CVE-2021-41495: Fixed Null Pointer Dereference in numpy.sort due to missing return value validation (bsc#1193911).\n","status":"published","published":"2022-09-12T11:08:42Z","modified":"2026-02-04T02:31:40.817365Z","updated_at":"2026-11-02T15:53:50.513981Z"},{"id":"SUSE-SU-2022:1064-2","title":"Security update for python2-numpy","description":"This update for python2-numpy fixes the following issues:\n\n- CVE-2021-33430: Fixed buffer overflow that could lead to DoS in PyArray_NewFromDescr_int function of ctors.c (bsc#1193913).\n- CVE-2021-41496: Fixed buffer overflow that could lead to DoS in array_from_pyobj function of fortranobject.c (bsc#1193907).\n- CVE-2021-41495: Fixed Null Pointer Dereference in numpy.sort due to missing return value validation (bsc#1193911).\n","status":"published","published":"2022-09-12T11:09:13Z","modified":"2026-02-04T04:20:20.156197Z","updated_at":"2026-11-02T15:53:50.513981Z"},{"id":"SUSE-SU-2022:2441-1","title":"Security update for python2-numpy","description":"This update for python2-numpy fixes the following issues:\n\n- CVE-2021-33430: Fixed buffer overflow that could lead to DoS in PyArray_NewFromDescr_int function of ctors.c (bsc#1193913).\n- CVE-2021-41496: Fixed buffer overflow that could lead to DoS in array_from_pyobj function of fortranobject.c (bsc#1193907).\n- CVE-2021-41495: Fixed Null Pointer Dereference in numpy.sort (bsc#1193911).\n","status":"published","published":"2022-07-19T14:52:30Z","modified":"2025-05-02T04:31:28.884583Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"SUSE-SU-2022:2645-1","title":"Security update for python-numpy","description":"This update for python-numpy fixes the following issues:\n\n- CVE-2021-41495: Fixed Null Pointer Dereference in numpy.sort (bsc#1193911).\n","status":"published","published":"2022-08-03T10:41:20Z","modified":"2026-02-04T03:56:59.079201Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"SUSE-SU-2022:2646-1","title":"Security update for python-numpy","description":"This update for python-numpy fixes the following issues:\n\n- CVE-2021-41495: Fixed Null Pointer Dereference in numpy.sort (bsc#1193911).\n","status":"published","published":"2022-08-03T10:41:45Z","modified":"2026-02-04T03:35:41.884756Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"SUSE-SU-2022:2793-1","title":"Security update for python-numpy","description":"This update for python-numpy fixes the following issues:\n\n- CVE-2021-41495: Fixed Null Pointer Dereference in numpy.sort (bsc#1193911).\n","status":"published","published":"2022-08-12T08:31:04Z","modified":"2025-05-02T04:31:52.8666Z","updated_at":"2026-11-02T15:53:50.965375Z"},{"id":"SUSE-SU-2025:0424-1","title":"Security update for python3-numpy","description":"This update for python3-numpy fixes the following issues:\n\n- CVE-2021-41495: missing return value validation can lead to null pointer dereference. (bsc#1193911)\n\nOther bug fixes:\t\n\n- Correction of advance in PCG with emulated int128.\n\n","status":"published","published":"2025-02-11T10:31:12Z","modified":"2026-02-04T03:22:14.855195Z","updated_at":"2026-11-02T15:53:58.883365Z"},{"id":"USN-5763-1","title":"numpy vulnerabilities","description":"It was discovered that NumPy did not properly manage memory when specifying\narrays of large dimensions. If a user were tricked into running malicious\nPython file, an attacker could cause a denial of service. This issue only\naffected Ubuntu 20.04 LTS. (CVE-2021-33430)\n\nIt was discovered that NumPy did not properly perform string comparison\noperations under certain circumstances. An attacker could possibly use\nthis issue to cause NumPy to crash, resulting in a denial of service.\n(CVE-2021-34141)\n\nIt was discovered that NumPy did not properly manage memory under certain\ncircumstances. An attacker could possibly use this issue to cause NumPy to\ncrash, resulting in a denial of service. (CVE-2021-41495, CVE-2021-41496)\n","status":"published","published":"2022-12-07T05:01:48Z","modified":"2026-02-10T04:42:52Z","updated_at":"2026-11-02T16:58:16.20937Z"}]}}