{"cve":{"cve_id":"CVE-2026-53163","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\nlocking/rtmutex: Skip remove_waiter() when waiter is not enqueued\n\nsyzbot triggered the following splat in remove_waiter() via\nFUTEX_CMP_REQUEUE_PI:\n\n  KASAN: null-ptr-deref in range [0x0000000000000a88-0x0000000000000a8f]\n   class_raw_spinlock_constructor\n   remove_waiter+0x159/0x1200 kernel/locking/rtmutex.c:1561\n   rt_mutex_start_proxy_lock+0x103/0x120\n   futex_requeue+0x10e4/0x20d0\n   __x64_sys_futex+0x34f/0x4d0\n\ntask_blocks_on_rt_mutex() does not arm the waiter upon deadlock detection,\nleaving waiter->task nil, where 3bfdc63936dd (\"rtmutex: Use waiter::task instead\nof current in remove_waiter()\") made this fatal.\n\nFurthermore, rt_mutex_start_proxy_lock() should not be calling into remove_waiter()\nupon a successfully grabbing the rtmutex. 1a1fb985f2e2 (\"futex: Handle early deadlock\nreturn correctly\"), moved the remove_waiter() out of __rt_mutex_start_proxy_lock()\n(where 'ret' was only ever 0 or < 0) into the wrapper. Tighten this check to\naccount for try_to_take_rt_mutex().","published_at":"2026-06-25T08:38:44.108000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"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/a388e3dfaf9538a680de5ed43a8ebb5dd45b6e53","https://git.kernel.org/stable/c/55363fa0a04524d11efeaadee734d2db1756ed27","https://git.kernel.org/stable/c/40a25d59e85b3c8709ac2424d44f65610467871e"],"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":"2026-06-28T23:30:50.753831Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"3fb7394a837740770f0d6b4b30567e60786a63f2","version_start_inclusive":true,"version_end":"a388e3dfaf9538a680de5ed43a8ebb5dd45b6e53","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:3fb7394a837740770f0d6b4b30567e60786a63f2:a388e3dfaf9538a680de5ed43a8ebb5dd45b6e53"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"88614876370aac8ad1050ad785a4c095ba17ac11","version_start_inclusive":true,"version_end":"55363fa0a04524d11efeaadee734d2db1756ed27","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:88614876370aac8ad1050ad785a4c095ba17ac11:55363fa0a04524d11efeaadee734d2db1756ed27"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"3bfdc63936dd4773109b7b8c280c0f3b5ae7d349","version_start_inclusive":true,"version_end":"40a25d59e85b3c8709ac2424d44f65610467871e","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:3bfdc63936dd4773109b7b8c280c0f3b5ae7d349:40a25d59e85b3c8709ac2424d44f65610467871e"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"d8cce4773c2b23d819baf5abedc62f7b430e8745","version_start_inclusive":true,"version_end":"d8cce4773c2b23d819baf5abedc62f7b430e8745","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:d8cce4773c2b23d819baf5abedc62f7b430e8745:d8cce4773c2b23d819baf5abedc62f7b430e8745"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"8a1fc8d698ac5e5916e3082a0f74450d71f9611f","version_start_inclusive":true,"version_end":"8a1fc8d698ac5e5916e3082a0f74450d71f9611f","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:8a1fc8d698ac5e5916e3082a0f74450d71f9611f:8a1fc8d698ac5e5916e3082a0f74450d71f9611f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6d52dfcb2a5db86e346cf51f8fcf2071b8085166","version_start_inclusive":true,"version_end":"6d52dfcb2a5db86e346cf51f8fcf2071b8085166","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6d52dfcb2a5db86e346cf51f8fcf2071b8085166:6d52dfcb2a5db86e346cf51f8fcf2071b8085166"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.1.175","version_start_inclusive":true,"version_end":"6.2","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.1.175:6.2"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.140","version_start_inclusive":true,"version_end":"6.7","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.6.140:6.7"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.86","version_start_inclusive":true,"version_end":"6.13","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.12.86:6.13"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.27","version_start_inclusive":true,"version_end":"6.18.36","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:6.18.27:6.18.36"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.4","version_start_inclusive":true,"version_end":"7.0.13","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:7.0.4:7.0.13"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/a388e3dfaf9538a680de5ed43a8ebb5dd45b6e53","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/55363fa0a04524d11efeaadee734d2db1756ed27","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/40a25d59e85b3c8709ac2424d44f65610467871e","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:38:44.108000Z","label":"CVE published","source":null}]}