{"id":"CVE-2022-3996","aliases":["ALPINE-CVE-2022-3996","AZL-40306","BELL-CVE-2022-3996","CLSA-2023-1683234934","CLSA-2023-1683235231","CLSA-2023-1683235565","CLSA-2023-1683235759","CLSA-2023-1683236532","CLSA-2026-1780682107","CLSA-2026-1780682108","CLSA-2026-1780683040","DEBIAN-CVE-2022-3996","EUVD-2022-7750","GHSA-vr8j-hgmm-jh9r","SUSE-SU-2022:4586-1","UBUNTU-CVE-2022-3996","USN-6039-1","openSUSE-SU-2024:12573-1"],"status":"published","title":"X.509 Policy Constraints Double Locking","description":"If an X.509 certificate contains a malformed policy constraint and\npolicy processing is enabled, then a write lock will be taken twice\nrecursively.  On some operating systems (most widely: Windows) this\nresults in a denial of service when the affected process hangs.  Policy\nprocessing being enabled on a publicly facing server is not considered\nto be a common setup.\n\nPolicy processing is enabled by passing the `-policy'\nargument to the command line utilities or by calling the\n`X509_VERIFY_PARAM_set1_policies()' function.\n\nUpdate (31 March 2023): The description of the policy processing enablement\nwas corrected based on CVE-2023-0466.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01312,"percentile":0.71086,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-667"],"published":"2022-12-13T15:43:06Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"crates.io","package":"openssl-src","fixed_in":["300.0.12"],"sources":["ghsa","osv"]},{"ecosystem":"Alpine:v3.17","package":"openssl","fixed_in":["3.0.7-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"openssl","fixed_in":["3.0.7-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"openssl","fixed_in":["3.0.7-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"openssl","fixed_in":["3.0.7-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"openssl","fixed_in":["3.0.7-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"openssl","fixed_in":["3.0.7-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"openssl","fixed_in":["3.0.7-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"openssl","fixed_in":["3.0.7-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"openssl3","fixed_in":["3.0.8-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"openssl3","fixed_in":["3.0.8-r0"],"sources":["osv"]},{"ecosystem":"Azure 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Advisory","fix","web"]},{"url":"https://security.netapp.com/advisory/ntap-20230203-0003/","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-3996","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-vr8j-hgmm-jh9r"},{"url":"https://security.alpinelinux.org/vuln/CVE-2022-3996","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2022-3996","tags":["advisory"]},{"url":"https://errata.cloudlinux.com/centos8.4-els/CLSA-2023-1683234934.html","tags":["advisory"]},{"url":"https://errata.cloudlinux.com/centos8.5-els/CLSA-2023-1683235231.html","tags":["advisory"]},{"url":"https://errata.cloudlinux.com/ol6/CLSA-2023-1683235565.html","tags":["advisory"]},{"url":"https://errata.cloudlinux.com/ubuntu16_04-els/CLSA-2023-1683235759","tags":["advisory"]},{"url":"https://errata.cloudlinux.com/els6/CLSA-2023-1683236532.html","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/rhel7els/CLSA-2026-1780682107.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3711","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-0464","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-5535","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-69419","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-69421","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28387","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28388","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28389","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28390","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/oraclelinux7els/CLSA-2026-1780682108.html","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/centos7els/CLSA-2026-1780683040.html","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/3xxx/CVE-2022-3996.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2022-3996","tags":["advisory"]},{"url":"https://github.com/alexcrichton/openssl-src-rs","tags":["package"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20224586-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1206374","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2022-3786","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2022-3996","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2022-3996","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-6039-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-3996","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-0464","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-0466","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2022-3996","title":"X.509 Policy Constraints Double Locking","description":"If an X.509 certificate contains a malformed policy constraint and\npolicy processing is enabled, then a write lock will be taken twice\nrecursively.  On some operating systems (most widely: Windows) this\nresults in a denial of service when the affected process hangs.  Policy\nprocessing being enabled on a publicly facing server is not considered\nto be a common setup.\n\nPolicy processing is enabled by passing the `-policy'\nargument to the command line utilities or by calling the\n`X509_VERIFY_PARAM_set1_policies()' function.\n\nUpdate (31 March 2023): The description of the policy processing enablement\nwas corrected based on CVE-2023-0466.","status":"published","published":"2022-12-13T15:43:06.821Z","modified":"2024-08-03T01:27:54.475Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T14:34:33.24035Z"}],"euvd":[{"id":"EUVD-2022-7750","description":"If an X.509 certificate contains a malformed policy constraint and\npolicy processing is enabled, then a write lock will be taken twice\nrecursively.  On some operating systems (most widely: Windows) this\nresults in a denial of service when the affected process hangs.  Policy\nprocessing being enabled on a publicly facing server is not considered\nto be a common setup.\n\nPolicy processing is enabled by passing the `-policy'\nargument to the command line utilities or by calling the\n`X509_VERIFY_PARAM_set1_policies()' function.\n\nUpdate (31 March 2023): The description of the policy processing enablement\nwas corrected based on CVE-2023-0466.","status":"published","published":"2022-12-13T15:43:06Z","modified":"2024-08-03T01:27:54Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T03:25:56.994006Z"}],"ghsa":[{"id":"GHSA-vr8j-hgmm-jh9r","title":"Denial of service by double-checked locking in openssl-src","description":"If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. On some operating systems (most widely: Windows) this results in a denial of service when the affected process hangs. Policy processing being enabled on a publicly facing server is not considered to be a common setup. Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling either `X509_VERIFY_PARAM_add0_policy()' or `X509_VERIFY_PARAM_set1_policies()' functions.","status":"published","published":"2022-12-13T18:30:33Z","modified":"2024-10-02T18:03:45Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T14:38:07.852618Z"}],"nvd":[{"id":"CVE-2022-3996","description":"If an X.509 certificate contains a malformed policy constraint and\npolicy processing is enabled, then a write lock will be taken twice\nrecursively.  On some operating systems (most widely: Windows) this\nresults in a denial of service when the affected process hangs.  Policy\nprocessing being enabled on a publicly facing server is not considered\nto be a common setup.\n\nPolicy processing is enabled by passing the `-policy'\nargument to the command line utilities or by calling the\n`X509_VERIFY_PARAM_set1_policies()' function.\n\nUpdate (31 March 2023): The description of the policy processing enablement\nwas corrected based on CVE-2023-0466.","status":"published","published":"2022-12-13T16:15:22.007Z","modified":"2026-06-17T05:00:44.367Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T14:07:33.649381Z"}],"osv":[{"id":"ALPINE-CVE-2022-3996","description":"If an X.509 certificate contains a malformed policy constraint and\npolicy processing is enabled, then a write lock will be taken twice\nrecursively.  On some operating systems (most widely: Windows) this\nresults in a denial of service when the affected process hangs.  Policy\nprocessing being enabled on a publicly facing server is not considered\nto be a common setup.\n\nPolicy processing is enabled by passing the `-policy'\nargument to the command line utilities or by calling the\n`X509_VERIFY_PARAM_set1_policies()' function.\n\nUpdate (31 March 2023): The description of the policy processing enablement\nwas corrected based on CVE-2023-0466.","status":"published","published":"2022-12-13T16:15:22.007Z","modified":"2026-11-03T07:18:33.683756742Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T07:50:38.973973Z"},{"id":"AZL-40306","title":"CVE-2022-3996 affecting package edk2 for versions less than 20240223gitedc6681206c1-2","description":"If an X.509 certificate contains a malformed policy constraint and\npolicy processing is enabled, then a write lock will be taken twice\nrecursively.  On some operating systems (most widely: Windows) this\nresults in a denial of service when the affected process hangs.  Policy\nprocessing being enabled on a publicly facing server is not considered\nto be a common setup.\n\nPolicy processing is enabled by passing the `-policy'\nargument to the command line utilities or by calling the\n`X509_VERIFY_PARAM_set1_policies()' function.\n\nUpdate (31 March 2023): The description of the policy processing enablement\nwas corrected based on CVE-2023-0466.","status":"published","published":"2022-12-13T16:15:22Z","modified":"2026-11-05T05:40:51Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-05T16:41:19.751978Z"},{"id":"BELL-CVE-2022-3996","title":"CVE-2022-3996 does not affect BellSoft software","status":"withdrawn","published":"2023-08-31T12:13:40.212505Z","modified":"2026-01-26T09:48:11.367608Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:17.151188Z"},{"id":"CVE-2022-3996","title":"X.509 Policy Constraints Double Locking","description":"If an X.509 certificate contains a malformed policy constraint and\npolicy processing is enabled, then a write lock will be taken twice\nrecursively.  On some operating systems (most widely: Windows) this\nresults in a denial of service when the affected process hangs.  Policy\nprocessing being enabled on a publicly facing server is not considered\nto be a common setup.\n\nPolicy processing is enabled by passing the `-policy'\nargument to the command line utilities or by calling the\n`X509_VERIFY_PARAM_set1_policies()' function.\n\nUpdate (31 March 2023): The description of the policy processing enablement\nwas corrected based on CVE-2023-0466.","status":"published","published":"2022-12-13T15:43:06.821Z","modified":"2026-11-11T13:23:35.684311101Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-667"],"updated_at":"2026-11-11T11:06:22.40849Z"},{"id":"DEBIAN-CVE-2022-3996","description":"If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively.  On some operating systems (most widely: Windows) this results in a denial of service when the affected process hangs.  Policy processing being enabled on a publicly facing server is not considered to be a common setup.  Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function.  Update (31 March 2023): The description of the policy processing enablement was corrected based on CVE-2023-0466.","status":"published","published":"2022-12-13T16:15:22.007Z","modified":"2026-11-03T08:02:54.804398039Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T08:24:39.643572Z"},{"id":"GHSA-vr8j-hgmm-jh9r","title":"Denial of service by double-checked locking in openssl-src","description":"If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. On some operating systems (most widely: Windows) this results in a denial of service when the affected process hangs. Policy processing being enabled on a publicly facing server is not considered to be a common setup. Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling either `X509_VERIFY_PARAM_add0_policy()' or `X509_VERIFY_PARAM_set1_policies()' functions.","status":"published","published":"2022-12-13T18:30:33Z","modified":"2026-09-10T03:49:50.494201995Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T15:46:57.694388Z"},{"id":"UBUNTU-CVE-2022-3996","description":"If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively.  On some operating systems (most widely: Windows) this results in a denial of service when the affected process hangs.  Policy processing being enabled on a publicly facing server is not considered to be a common setup. Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function. Update (31 March 2023): The description of the policy processing enablement was corrected based on CVE-2023-0466.","status":"published","published":"2022-12-13T16:15:00Z","modified":"2026-10-05T19:20:11.330925649Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:53:55.502114Z"},{"id":"CLSA-2023-1683234934","title":"openssl: Fix of 3 CVEs","description":"- CVE-2023-0464: Fix excessive resource use verifying X.509 policy constraints\n- CVE-2023-0466: Fix documentation of X509_VERIFY_PARAM_add0_policy()\n- CVE-2022-3996: Drop redundant flag setting in policy_cache_set_mapping()","status":"published","published":"2023-05-04T21:15:40Z","modified":"2026-10-21T10:48:23.713753505Z","updated_at":"2026-11-02T15:43:40.509998Z"},{"id":"CLSA-2023-1683235231","title":"openssl: Fix of 3 CVEs","description":"- CVE-2023-0464: Fix excessive resource use verifying X.509 policy constraints\n- CVE-2023-0466: Fix documentation of X509_VERIFY_PARAM_add0_policy()\n- CVE-2022-3996: Drop redundant flag setting in policy_cache_set_mapping()","status":"published","published":"2023-05-04T21:20:36Z","modified":"2026-10-21T10:48:07.064494937Z","updated_at":"2026-11-02T15:43:40.509998Z"},{"id":"CLSA-2023-1683235565","title":"openssl: Fix of 3 CVEs","description":"- CVE-2023-0464: Fix excessive resource use verifying X.509 policy constraints\n- CVE-2023-0466: Fix documentation of X509_VERIFY_PARAM_add0_policy()\n- CVE-2022-3996: Drop redundant flag setting in policy_cache_set_mapping()","status":"published","published":"2023-05-04T21:26:10Z","modified":"2026-10-21T10:48:11.184765954Z","updated_at":"2026-11-02T15:43:40.509998Z"},{"id":"CLSA-2023-1683235759","title":"Fix CVE(s): CVE-2022-3996, CVE-2023-0464, CVE-2023-0466","description":"\n   * SECURITY UPDATE: Excessive resource use verifying X.509 policy constraints\n     - debian/patches/CVE-2023-0464.patch: Limit X.509 certificate tree size to\n       avoid exponential use of computational resources\n     - CVE-2023-0464\n   * SECURITY UPDATE: Incorrecly documented X509_VERIFY_PARAM_add0_policy()\n     - debian/patches/CVE-2023-0466.patch: Align documentation with actual\n       implementation\n     - CVE-2023-0466\n   * SECURITY UPDATE: Double locking in X.509 policy cache handling\n     - debian/patches/CVE-2022-3996.patch: Revert previously introduced\n       redundant flag setting and so avoid locking at all\n     - CVE-2022-3996","status":"published","published":"2023-05-04T21:29:24Z","modified":"2026-06-04T10:03:20.277686Z","updated_at":"2026-11-02T15:43:40.509998Z"},{"id":"CLSA-2023-1683236532","title":"openssl: Fix of 3 CVEs","description":"- CVE-2023-0464: Fix excessive resource use verifying X.509 policy constraints\n- CVE-2023-0466: Fix documentation of X509_VERIFY_PARAM_add0_policy()\n- CVE-2022-3996: Drop redundant flag setting in policy_cache_set_mapping()","status":"published","published":"2023-05-04T21:42:17Z","modified":"2026-10-21T10:47:04.636385478Z","updated_at":"2026-11-02T15:43:40.509998Z"},{"id":"CLSA-2026-1780682107","title":"openssl11: Fix of 10 CVEs","description":"- CVE-2021-3711: fix SM2 decryption buffer overflow; check the plaintext buffer\n  is large enough when decrypting SM2; add extended tests for SM2\n- CVE-2022-3996: fix X.509 policy constraints double-locking denial of service\n- CVE-2023-0464: fix excessive resource use verifying X.509 policy constraints\n- CVE-2023-0466: fix X509_VERIFY_PARAM_add0_policy() does not enable policy check\n- CVE-2023-2650: restrict the size of OBJECT IDENTIFIERs that OBJ_obj2txt translates\n- CVE-2024-13176: fix timing side-channel in ECDSA signature computation\n- CVE-2024-5535: validate provided client list in SSL_select_next_proto\n- CVE-2025-9230: fix out-of-bounds read and write in RFC 3211 KEK unwrap\n- CVE-2025-69419: fix one-byte write-before-buffer in PKCS#12 BMPString conversion\n- CVE-2025-69421: fix NULL dereference in PKCS12_item_decrypt_d2i_ex()\n- CVE-2026-28387: fix use-after-free / double-free in dane_match()\n- CVE-2026-28388: fix NULL dereference in check_delta_base()\n- CVE-2026-28389: fix NULL dereference in dh/ecdh_cms_set_shared_info()\n- CVE-2026-28390: fix NULL dereference in rsa_cms_decrypt()","status":"published","published":"2026-10-19T20:44:42Z","modified":"2026-10-26T09:43:19.372450535Z","updated_at":"2026-11-02T15:43:45.445699Z"},{"id":"CLSA-2026-1780682108","title":"openssl11: Fix of 10 CVEs","description":"- CVE-2021-3711: fix SM2 decryption buffer overflow; check the plaintext buffer\n  is large enough when decrypting SM2; add extended tests for SM2\n- CVE-2022-3996: fix X.509 policy constraints double-locking denial of service\n- CVE-2023-0464: fix excessive resource use verifying X.509 policy constraints\n- CVE-2023-0466: fix X509_VERIFY_PARAM_add0_policy() does not enable policy check\n- CVE-2023-2650: restrict the size of OBJECT IDENTIFIERs that OBJ_obj2txt translates\n- CVE-2024-13176: fix timing side-channel in ECDSA signature computation\n- CVE-2024-5535: validate provided client list in SSL_select_next_proto\n- CVE-2025-9230: fix out-of-bounds read and write in RFC 3211 KEK unwrap\n- CVE-2025-69419: fix one-byte write-before-buffer in PKCS#12 BMPString conversion\n- CVE-2025-69421: fix NULL dereference in PKCS12_item_decrypt_d2i_ex()\n- CVE-2026-28387: fix use-after-free / double-free in dane_match()\n- CVE-2026-28388: fix NULL dereference in check_delta_base()\n- CVE-2026-28389: fix NULL dereference in dh/ecdh_cms_set_shared_info()\n- CVE-2026-28390: fix NULL dereference in rsa_cms_decrypt()","status":"published","published":"2026-10-19T20:30:57Z","modified":"2026-10-26T09:43:24.553701582Z","updated_at":"2026-11-02T15:43:45.445699Z"},{"id":"CLSA-2026-1780683040","title":"openssl11: Fix of 10 CVEs","description":"- CVE-2021-3711: fix SM2 decryption buffer overflow; check the plaintext buffer\n  is large enough when decrypting SM2; add extended tests for SM2\n- CVE-2022-3996: fix X.509 policy constraints double-locking denial of service\n- CVE-2023-0464: fix excessive resource use verifying X.509 policy constraints\n- CVE-2023-0466: fix X509_VERIFY_PARAM_add0_policy() does not enable policy check\n- CVE-2023-2650: restrict the size of OBJECT IDENTIFIERs that OBJ_obj2txt translates\n- CVE-2024-13176: fix timing side-channel in ECDSA signature computation\n- CVE-2024-5535: validate provided client list in SSL_select_next_proto\n- CVE-2025-9230: fix out-of-bounds read and write in RFC 3211 KEK unwrap\n- CVE-2025-69419: fix one-byte write-before-buffer in PKCS#12 BMPString conversion\n- CVE-2025-69421: fix NULL dereference in PKCS12_item_decrypt_d2i_ex()\n- CVE-2026-28387: fix use-after-free / double-free in dane_match()\n- CVE-2026-28388: fix NULL dereference in check_delta_base()\n- CVE-2026-28389: fix NULL dereference in dh/ecdh_cms_set_shared_info()\n- CVE-2026-28390: fix NULL dereference in rsa_cms_decrypt()","status":"published","published":"2026-10-19T20:23:13Z","modified":"2026-10-26T09:43:24.002329629Z","updated_at":"2026-11-02T15:43:45.445699Z"},{"id":"openSUSE-SU-2024:12573-1","title":"libopenssl-3-devel-3.0.7-2.1 on GA media","description":"These are all security issues fixed in the libopenssl-3-devel-3.0.7-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:10:54.418386Z","updated_at":"2026-11-02T16:58:35.751245Z"},{"id":"SUSE-SU-2022:4586-1","title":"Security update for openssl-3","description":"This update for openssl-3 fixes the following issues:\n\n- CVE-2022-3996: Fixed X.509 Policy Constraints Double Locking (bsc#1206374)\n","status":"published","published":"2022-12-20T12:32:21Z","modified":"2026-02-04T03:16:22.713441Z","updated_at":"2026-11-02T15:53:51.853735Z"},{"id":"USN-6039-1","title":"openssl, openssl1.0 vulnerabilities","description":"It was discovered that OpenSSL was not properly managing file locks when\nprocessing policy constraints. If a user or automated system were tricked\ninto processing a certificate chain with specially crafted policy\nconstraints, a remote attacker could possibly use this issue to cause a\ndenial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu\n22.10. (CVE-2022-3996)\n\nDavid Benjamin discovered that OpenSSL was not properly performing the\nverification of X.509 certificate chains that include policy constraints,\nwhich could lead to excessive resource consumption. If a user or automated\nsystem were tricked into processing a specially crafted X.509 certificate\nchain that includes policy constraints, a remote attacker could possibly\nuse this issue to cause a denial of service. (CVE-2023-0464)\n\nDavid Benjamin discovered that OpenSSL was not properly handling invalid\ncertificate policies in leaf certificates, which would result in certain\npolicy checks being skipped for the certificate. If a user or automated\nsystem were tricked into processing a specially crafted certificate, a\nremote attacker could possibly use this issue to assert invalid\ncertificate policies and circumvent policy checking. (CVE-2023-0465)\n\nDavid Benjamin discovered that OpenSSL incorrectly documented the\nfunctionalities of function X509_VERIFY_PARAM_add0_policy, stating that\nit would implicitly enable certificate policy checks when doing\ncertificate verifications, contrary to its implementation. This could\ncause users and applications to not perform certificate policy checks\neven when expected to do so. (CVE-2023-0466)\n","status":"published","published":"2023-04-25T15:53:53Z","modified":"2026-06-29T13:50:51.366521311Z","updated_at":"2026-11-02T16:58:16.738762Z"}]}}