{"schema":"threatline.record/2","record":{"id":"CVE-2026-93263","aliases":[],"summary":"clk: eswin: Zero-initialize stack-allocated clk_init_data","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nclk: eswin: Zero-initialize stack-allocated clk_init_data\n\neswin_clk_register_pll() and eswin_register_clkdiv() declare a struct\nclk_init_data on the stack and only initialize some of its fields\n(parent_data respectively parent_hws). clk_core_populate_parent_map()\nchecks parent_names first and parent_data second before falling back\nto parent_hws, so leftover stack garbage in the uninitialized fields\nhijacks parent resolution and the clk core dereferences a bogus\npointer:\n\n  Unable to handle kernel NULL pointer dereference at virtual address 000000000000000c\n  Oops [#1]\n  epc : __clk_register+0x31a/0x7f0\n  [<ffffffff805dc774>] __clk_register+0x31a/0x7f0\n  [<ffffffff805dcd76>] devm_clk_hw_register+0x2a/0x94\n  [<ffffffff805e319a>] eswin_register_clkdiv+0x80/0xd0\n  [<ffffffff805e34a0>] eswin_clk_register_clks+0x162/0x1a0\n  [<ffffffff805e3736>] eic7700_clk_probe+0x146/0x180\n  [<ffffffff8065d23c>] platform_probe+0x3c/0x7a\n\nObserved on EIC7700 hardware (with the driver backported to a 6.17\ntree); whether the bug triggers depends entirely on what the stack\nhappens to contain when the registration helpers run.\n\nZero-initialize both structures.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93263","source_modified_at":"2026-10-19T09:08:16.442Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"cd44f127c1d42833a32ba0a0965255ee6184f8c1","lessThan":"1183dc2450a268a536a15da8b106ec520cdbd19f","status":"affected","versionType":"git"},{"version":"cd44f127c1d42833a32ba0a0965255ee6184f8c1","lessThan":"011d8de504bc84402aabc1dda1cf0552fe9a5af2","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93263","source_modified_at":"2026-10-19T09:08:16.442Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"7.1","status":"affected"},{"version":"0","lessThan":"7.1","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93263","source_modified_at":"2026-10-19T09:08:16.442Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"1183dc2450a268a536a15da8b106ec520cdbd19f","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93263","source_modified_at":"2026-10-19T09:08:16.442Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"011d8de504bc84402aabc1dda1cf0552fe9a5af2","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00176,"percentile":0.06814,"score_date":"2026-10-23"},"published_at":"2026-09-24T15:52:02.877Z","modified_at":"2026-10-19T09:08:16.442Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93263","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:08:16.442Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93263","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/1183dc2450a268a536a15da8b106ec520cdbd19f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/011d8de504bc84402aabc1dda1cf0552fe9a5af2"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:08:16.442Z","content_hash":"59d5dc7c30d66db435a7270369fced7a5031c87e3a6b0f808cad0ea102bd61f0"}}