{"cve":{"cve_id":"CVE-2026-53275","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\nipv6: mcast: Fix use-after-free when processing MLD queries\n\nWhen processing an MLD query, a pointer to the multicast group address\nis retrieved when initially parsing the packet. This pointer is later\ndereferenced without being reloaded despite the fact that the skb header\nmight have been reallocated following the pskb_may_pull() calls, leading\nto a use-after-free [1].\n\nFix by copying the multicast group address when the packet is initially\nparsed.\n\n[1]\nBUG: KASAN: slab-use-after-free in __mld_query_work (net/ipv6/mcast.c:1512)\nRead of size 8 at addr ffff8881154b8e90 by task kworker/4:1/118\n\nWorkqueue: mld mld_query_work\nCall Trace:\n<TASK>\ndump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)\nprint_address_description.constprop.0 (mm/kasan/report.c:378)\nprint_report (mm/kasan/report.c:482)\nkasan_report (mm/kasan/report.c:595)\n__mld_query_work (net/ipv6/mcast.c:1512)\nmld_query_work (net/ipv6/mcast.c:1563)\nprocess_one_work (kernel/workqueue.c:3314)\nworker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)\nkthread (kernel/kthread.c:436)\nret_from_fork (arch/x86/kernel/process.c:158)\nret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n</TASK>\n\n[...]\n\nFreed by task 118:\nkasan_save_stack (mm/kasan/common.c:57)\nkasan_save_track (mm/kasan/common.c:78)\nkasan_save_free_info (mm/kasan/generic.c:584)\n__kasan_slab_free (mm/kasan/common.c:253 mm/kasan/common.c:285)\nkfree (./include/linux/kasan.h:235 mm/slub.c:2689 mm/slub.c:6251 mm/slub.c:6566)\npskb_expand_head (net/core/skbuff.c:2335)\n__pskb_pull_tail (net/core/skbuff.c:2878 (discriminator 4))\n__mld_query_work (net/ipv6/mcast.c:1495 (discriminator 1))\nmld_query_work (net/ipv6/mcast.c:1563)\nprocess_one_work (kernel/workqueue.c:3314)\nworker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)\nkthread (kernel/kthread.c:436)\nret_from_fork (arch/x86/kernel/process.c:158)\nret_from_fork_asm (arch/x86/entry/entry_64.S:245)","published_at":"2026-06-25T08:39:59.115000Z","last_modified_at":null,"cvss_v3_score":8.8,"cvss_v3_vector":"CVSS:3.1/AV:A/AC:L/PR:N/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/1354271c89d0e5fbf8b3d94097ff0216695209c7","https://git.kernel.org/stable/c/53baa63a4183291574483f89583dbef13677a2c4","https://git.kernel.org/stable/c/2a613bf497029d555a7428406aa8cdb84a503cea","https://git.kernel.org/stable/c/b2eb8886200b907fc71806869620609f0f4cacb0","https://git.kernel.org/stable/c/4203806f700bb44ea0b05d484d9d40044b47fb04","https://git.kernel.org/stable/c/087dbacf897c020f438f780f0a4a8aa73b6d7c5a","https://git.kernel.org/stable/c/791c91dc7a9dfb2457d5e29b8216a6484b9c4b40"],"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":"A","value_label":"Adjacent"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"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":"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":"97300b5fdfe28c6edae926926f9467a27cf5889c","version_start_inclusive":true,"version_end":"1354271c89d0e5fbf8b3d94097ff0216695209c7","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:97300b5fdfe28c6edae926926f9467a27cf5889c:1354271c89d0e5fbf8b3d94097ff0216695209c7"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"97300b5fdfe28c6edae926926f9467a27cf5889c","version_start_inclusive":true,"version_end":"53baa63a4183291574483f89583dbef13677a2c4","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:97300b5fdfe28c6edae926926f9467a27cf5889c:53baa63a4183291574483f89583dbef13677a2c4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"97300b5fdfe28c6edae926926f9467a27cf5889c","version_start_inclusive":true,"version_end":"2a613bf497029d555a7428406aa8cdb84a503cea","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:97300b5fdfe28c6edae926926f9467a27cf5889c:2a613bf497029d555a7428406aa8cdb84a503cea"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"97300b5fdfe28c6edae926926f9467a27cf5889c","version_start_inclusive":true,"version_end":"b2eb8886200b907fc71806869620609f0f4cacb0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:97300b5fdfe28c6edae926926f9467a27cf5889c:b2eb8886200b907fc71806869620609f0f4cacb0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"97300b5fdfe28c6edae926926f9467a27cf5889c","version_start_inclusive":true,"version_end":"4203806f700bb44ea0b05d484d9d40044b47fb04","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:97300b5fdfe28c6edae926926f9467a27cf5889c:4203806f700bb44ea0b05d484d9d40044b47fb04"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"97300b5fdfe28c6edae926926f9467a27cf5889c","version_start_inclusive":true,"version_end":"087dbacf897c020f438f780f0a4a8aa73b6d7c5a","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:97300b5fdfe28c6edae926926f9467a27cf5889c:087dbacf897c020f438f780f0a4a8aa73b6d7c5a"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"97300b5fdfe28c6edae926926f9467a27cf5889c","version_start_inclusive":true,"version_end":"791c91dc7a9dfb2457d5e29b8216a6484b9c4b40","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:97300b5fdfe28c6edae926926f9467a27cf5889c:791c91dc7a9dfb2457d5e29b8216a6484b9c4b40"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"2.6.15","version_start_inclusive":true,"version_end":"2.6.15","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:2.6.15:2.6.15"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"2.6.15","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:2.6.15"},{"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":"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/1354271c89d0e5fbf8b3d94097ff0216695209c7","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/53baa63a4183291574483f89583dbef13677a2c4","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/2a613bf497029d555a7428406aa8cdb84a503cea","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/b2eb8886200b907fc71806869620609f0f4cacb0","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/4203806f700bb44ea0b05d484d9d40044b47fb04","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/087dbacf897c020f438f780f0a4a8aa73b6d7c5a","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/791c91dc7a9dfb2457d5e29b8216a6484b9c4b40","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:39:59.115000Z","label":"CVE published","source":null}]}