{"cve":{"cve_id":"CVE-2026-53273","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntee: optee: prevent use-after-free when the client exits before the supplicant\n\nCommit 70b0d6b0a199 (\"tee: optee: Fix supplicant wait loop\") made the\nclient wait as killable so it can be interrupted during shutdown or\nafter a supplicant crash. This changes the original lifetime expectations:\nthe client task can now terminate while the supplicant is still processing\nits request.\n\nIf the client exits first it removes the request from its queue and\nkfree()s it, while the request ID remains in supp->idr. A subsequent\nlookup on the supplicant path then dereferences freed memory, leading to\na use-after-free.\n\nSerialise access to the request with supp->mutex:\n\n  * Hold supp->mutex in optee_supp_recv() and optee_supp_send() while\n    looking up and touching the request.\n  * Let optee_supp_thrd_req() notice that the client has terminated and\n    signal optee_supp_send() accordingly.\n\nWith these changes the request cannot be freed while the supplicant still\nhas a reference, eliminating the race.","published_at":"2026-06-25T08:39:57.811000Z","last_modified_at":null,"cvss_v3_score":7.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/416259cb5bffecaaae5f76539deb535a8c1b2c34","https://git.kernel.org/stable/c/724d0caffd4204b46f78efe22f18f8338031c6e1","https://git.kernel.org/stable/c/ae847ab29ded2d7cece4d5970f0edefa4137bf2f","https://git.kernel.org/stable/c/9a0dc9279d0907b198f205a693aedf696b08145d","https://git.kernel.org/stable/c/d366a01475f927402c96a3fe78bfc06b924fc87d","https://git.kernel.org/stable/c/d5b57bb314d79e99bebb58a53588fa11dd4dbf69","https://git.kernel.org/stable/c/373152c94e57e9592b68c100e224fbd943cfd608","https://git.kernel.org/stable/c/387a926ee166814611acecb960207fe2f3c4fd3e"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:51.545322Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0180cf0373f84fff61b16f8c062553a13dd7cfca","version_start_inclusive":true,"version_end":"416259cb5bffecaaae5f76539deb535a8c1b2c34","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0180cf0373f84fff61b16f8c062553a13dd7cfca:416259cb5bffecaaae5f76539deb535a8c1b2c34"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"c0a9a948159153be145f9471435695373904ee6d","version_start_inclusive":true,"version_end":"724d0caffd4204b46f78efe22f18f8338031c6e1","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:c0a9a948159153be145f9471435695373904ee6d:724d0caffd4204b46f78efe22f18f8338031c6e1"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"ec18520f5edc20a00c34a8c9fdd6507c355e880f","version_start_inclusive":true,"version_end":"ae847ab29ded2d7cece4d5970f0edefa4137bf2f","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:ec18520f5edc20a00c34a8c9fdd6507c355e880f:ae847ab29ded2d7cece4d5970f0edefa4137bf2f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"d61cc1a435e6894bfb0dd3370c6f765d2d12825d","version_start_inclusive":true,"version_end":"9a0dc9279d0907b198f205a693aedf696b08145d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:d61cc1a435e6894bfb0dd3370c6f765d2d12825d:9a0dc9279d0907b198f205a693aedf696b08145d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"fd9d2d6124c293e40797a080adf8a9c237efd8b8","version_start_inclusive":true,"version_end":"d366a01475f927402c96a3fe78bfc06b924fc87d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:fd9d2d6124c293e40797a080adf8a9c237efd8b8:d366a01475f927402c96a3fe78bfc06b924fc87d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"70b0d6b0a199c5a3ee6c72f5e61681ed6f759612","version_start_inclusive":true,"version_end":"d5b57bb314d79e99bebb58a53588fa11dd4dbf69","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:70b0d6b0a199c5a3ee6c72f5e61681ed6f759612:d5b57bb314d79e99bebb58a53588fa11dd4dbf69"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"70b0d6b0a199c5a3ee6c72f5e61681ed6f759612","version_start_inclusive":true,"version_end":"373152c94e57e9592b68c100e224fbd943cfd608","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:70b0d6b0a199c5a3ee6c72f5e61681ed6f759612:373152c94e57e9592b68c100e224fbd943cfd608"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"70b0d6b0a199c5a3ee6c72f5e61681ed6f759612","version_start_inclusive":true,"version_end":"387a926ee166814611acecb960207fe2f3c4fd3e","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:70b0d6b0a199c5a3ee6c72f5e61681ed6f759612:387a926ee166814611acecb960207fe2f3c4fd3e"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"3eb4911364c764572e9db4ab900a57689a54e8ce","version_start_inclusive":true,"version_end":"3eb4911364c764572e9db4ab900a57689a54e8ce","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:3eb4911364c764572e9db4ab900a57689a54e8ce:3eb4911364c764572e9db4ab900a57689a54e8ce"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"21234efe2a8474a6d2d01ea9573319de7858ce44","version_start_inclusive":true,"version_end":"21234efe2a8474a6d2d01ea9573319de7858ce44","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:21234efe2a8474a6d2d01ea9573319de7858ce44:21234efe2a8474a6d2d01ea9573319de7858ce44"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.10.235","version_start_inclusive":true,"version_end":"5.10.259","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5.10.235:5.10.259"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15.179","version_start_inclusive":true,"version_end":"5.15.210","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5.15.179:5.15.210"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.130","version_start_inclusive":true,"version_end":"6.1.176","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.1.130:6.1.176"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.80","version_start_inclusive":true,"version_end":"6.6.143","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.6.80:6.6.143"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.17","version_start_inclusive":true,"version_end":"6.12.94","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.12.17:6.12.94"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.4.291","version_start_inclusive":true,"version_end":"5.5","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:5.4.291:5.5"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.13.5","version_start_inclusive":true,"version_end":"6.14","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.13.5:6.14"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.14","version_start_inclusive":true,"version_end":"6.14","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.14:6.14"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.14","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.14"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.10.259","version_start_inclusive":true,"version_end":"5.10.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.10.259:5.10.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"5.15.210","version_start_inclusive":true,"version_end":"5.15.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:5.15.210:5.15.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.176","version_start_inclusive":true,"version_end":"6.1.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.1.176:6.1.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.143","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.143:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.94","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.94:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.36","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.36:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.13","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.13:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/416259cb5bffecaaae5f76539deb535a8c1b2c34","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/724d0caffd4204b46f78efe22f18f8338031c6e1","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/ae847ab29ded2d7cece4d5970f0edefa4137bf2f","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/9a0dc9279d0907b198f205a693aedf696b08145d","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/d366a01475f927402c96a3fe78bfc06b924fc87d","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/d5b57bb314d79e99bebb58a53588fa11dd4dbf69","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/373152c94e57e9592b68c100e224fbd943cfd608","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/387a926ee166814611acecb960207fe2f3c4fd3e","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:39:57.811000Z","label":"CVE published","source":null}]}