{"api_version":"1","generated_at":"2026-08-30T20:58:14+00:00","cve":"CVE-2026-68378","urls":{"html":"https://cve.report/CVE-2026-68378","api":"https://cve.report/api/cve/CVE-2026-68378.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68378","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68378"},"summary":{"title":"dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync()\n\nWhen a dpll_pin is shared across multiple dpll_device instances and\nthose devices are being unregistered (e.g. during driver module removal),\na NULL pointer dereference can occur in dpll_msg_add_pin_ref_sync().\n\nThis happens under the following conditions:\n - A pin is registered with two or more dpll devices (dpll_A, dpll_B)\n - The pin has ref_sync pairs with other pins\n - During unregistration of dpll_A's pins, a ref_sync partner pin is\n   unregistered first, removing it from dpll_A->pin_refs\n - But since the partner pin is still registered with dpll_B, its\n   dpll_refs is not empty, so dpll_pin_ref_sync_pair_del() does NOT\n   run and the partner stays in the pin's ref_sync_pins xarray\n - When the pin itself is then unregistered from dpll_A, the delete\n   notification calls dpll_msg_add_pin_ref_sync() which finds the\n   partner in ref_sync_pins, passes dpll_pin_available() (partner is\n   still registered with dpll_B), but dpll_pin_on_dpll_priv(dpll_A,\n   partner) returns NULL because partner was already removed from\n   dpll_A->pin_refs\n - The NULL priv pointer is passed to the driver's ref_sync_get\n   callback, which dereferences it\n\n BUG: kernel NULL pointer dereference, address: 0000000000000034\n Oops: Oops: 0000 [#1] SMP NOPTI\n RIP: 0010:zl3073x_dpll_input_pin_ref_sync_get+0x73/0x80 [zl3073x]\n Call Trace:\n  dpll_msg_add_pin_ref_sync+0xb8/0x200\n  dpll_cmd_pin_get_one+0x3b6/0x4b0\n  dpll_pin_event_send+0x72/0x140\n  __dpll_pin_unregister+0x5a/0x2b0\n  dpll_pin_unregister+0x49/0x70\n\nFix this by skipping ref_sync pins whose priv pointer cannot be resolved\nfor the current dpll device.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:30","updated_at":"2026-08-17 06:17:46"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/4b3e6b9fdaeb40c6a2f7c41db3888b6ee628bdd2","name":"https://git.kernel.org/stable/c/4b3e6b9fdaeb40c6a2f7c41db3888b6ee628bdd2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/51c2fcc4cd2e4c52bd1970558f6e5356fdc51154","name":"https://git.kernel.org/stable/c/51c2fcc4cd2e4c52bd1970558f6e5356fdc51154","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d2e914a4a0d0f753dbae830264850d044026167c","name":"https://git.kernel.org/stable/c/d2e914a4a0d0f753dbae830264850d044026167c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/66fbe0499ef517ab161b96c49886a891851f6481","name":"https://git.kernel.org/stable/c/66fbe0499ef517ab161b96c49886a891851f6481","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68378","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68378","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 40466ea1827c46c6435fab9b21b63b80733e2d07 66fbe0499ef517ab161b96c49886a891851f6481 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 58256a26bfb37a94738dd65618b1f31f460f8d91 51c2fcc4cd2e4c52bd1970558f6e5356fdc51154 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 58256a26bfb37a94738dd65618b1f31f460f8d91 4b3e6b9fdaeb40c6a2f7c41db3888b6ee628bdd2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 58256a26bfb37a94738dd65618b1f31f460f8d91 d2e914a4a0d0f753dbae830264850d044026167c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.17","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.17 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"68378","cve":"CVE-2026-68378","epss":"0.002000000","percentile":"0.101550000","score_date":"2026-08-17","updated_at":"2026-08-18 00:11:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/dpll/dpll_netlink.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"66fbe0499ef517ab161b96c49886a891851f6481","status":"affected","version":"40466ea1827c46c6435fab9b21b63b80733e2d07","versionType":"git"},{"lessThan":"51c2fcc4cd2e4c52bd1970558f6e5356fdc51154","status":"affected","version":"58256a26bfb37a94738dd65618b1f31f460f8d91","versionType":"git"},{"lessThan":"4b3e6b9fdaeb40c6a2f7c41db3888b6ee628bdd2","status":"affected","version":"58256a26bfb37a94738dd65618b1f31f460f8d91","versionType":"git"},{"lessThan":"d2e914a4a0d0f753dbae830264850d044026167c","status":"affected","version":"58256a26bfb37a94738dd65618b1f31f460f8d91","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/dpll/dpll_netlink.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.17"},{"lessThan":"6.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"6.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"6.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.17","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync()\n\nWhen a dpll_pin is shared across multiple dpll_device instances and\nthose devices are being unregistered (e.g. during driver module removal),\na NULL pointer dereference can occur in dpll_msg_add_pin_ref_sync().\n\nThis happens under the following conditions:\n - A pin is registered with two or more dpll devices (dpll_A, dpll_B)\n - The pin has ref_sync pairs with other pins\n - During unregistration of dpll_A's pins, a ref_sync partner pin is\n   unregistered first, removing it from dpll_A->pin_refs\n - But since the partner pin is still registered with dpll_B, its\n   dpll_refs is not empty, so dpll_pin_ref_sync_pair_del() does NOT\n   run and the partner stays in the pin's ref_sync_pins xarray\n - When the pin itself is then unregistered from dpll_A, the delete\n   notification calls dpll_msg_add_pin_ref_sync() which finds the\n   partner in ref_sync_pins, passes dpll_pin_available() (partner is\n   still registered with dpll_B), but dpll_pin_on_dpll_priv(dpll_A,\n   partner) returns NULL because partner was already removed from\n   dpll_A->pin_refs\n - The NULL priv pointer is passed to the driver's ref_sync_get\n   callback, which dereferences it\n\n BUG: kernel NULL pointer dereference, address: 0000000000000034\n Oops: Oops: 0000 [#1] SMP NOPTI\n RIP: 0010:zl3073x_dpll_input_pin_ref_sync_get+0x73/0x80 [zl3073x]\n Call Trace:\n  dpll_msg_add_pin_ref_sync+0xb8/0x200\n  dpll_cmd_pin_get_one+0x3b6/0x4b0\n  dpll_pin_event_send+0x72/0x140\n  __dpll_pin_unregister+0x5a/0x2b0\n  dpll_pin_unregister+0x49/0x70\n\nFix this by skipping ref_sync pins whose priv pointer cannot be resolved\nfor the current dpll device."}],"providerMetadata":{"dateUpdated":"2026-08-17T05:04:24.219Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/66fbe0499ef517ab161b96c49886a891851f6481"},{"url":"https://git.kernel.org/stable/c/51c2fcc4cd2e4c52bd1970558f6e5356fdc51154"},{"url":"https://git.kernel.org/stable/c/4b3e6b9fdaeb40c6a2f7c41db3888b6ee628bdd2"},{"url":"https://git.kernel.org/stable/c/d2e914a4a0d0f753dbae830264850d044026167c"}],"title":"dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68378","datePublished":"2026-08-10T12:03:56.590Z","dateReserved":"2026-07-30T09:28:09.387Z","dateUpdated":"2026-08-17T05:04:24.219Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:30","lastModifiedDate":"2026-08-17 06:17:46","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68378","Ordinal":"1","Title":"dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync(","CVE":"CVE-2026-68378","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68378","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync()\n\nWhen a dpll_pin is shared across multiple dpll_device instances and\nthose devices are being unregistered (e.g. during driver module removal),\na NULL pointer dereference can occur in dpll_msg_add_pin_ref_sync().\n\nThis happens under the following conditions:\n - A pin is registered with two or more dpll devices (dpll_A, dpll_B)\n - The pin has ref_sync pairs with other pins\n - During unregistration of dpll_A's pins, a ref_sync partner pin is\n   unregistered first, removing it from dpll_A->pin_refs\n - But since the partner pin is still registered with dpll_B, its\n   dpll_refs is not empty, so dpll_pin_ref_sync_pair_del() does NOT\n   run and the partner stays in the pin's ref_sync_pins xarray\n - When the pin itself is then unregistered from dpll_A, the delete\n   notification calls dpll_msg_add_pin_ref_sync() which finds the\n   partner in ref_sync_pins, passes dpll_pin_available() (partner is\n   still registered with dpll_B), but dpll_pin_on_dpll_priv(dpll_A,\n   partner) returns NULL because partner was already removed from\n   dpll_A->pin_refs\n - The NULL priv pointer is passed to the driver's ref_sync_get\n   callback, which dereferences it\n\n BUG: kernel NULL pointer dereference, address: 0000000000000034\n Oops: Oops: 0000 [#1] SMP NOPTI\n RIP: 0010:zl3073x_dpll_input_pin_ref_sync_get+0x73/0x80 [zl3073x]\n Call Trace:\n  dpll_msg_add_pin_ref_sync+0xb8/0x200\n  dpll_cmd_pin_get_one+0x3b6/0x4b0\n  dpll_pin_event_send+0x72/0x140\n  __dpll_pin_unregister+0x5a/0x2b0\n  dpll_pin_unregister+0x49/0x70\n\nFix this by skipping ref_sync pins whose priv pointer cannot be resolved\nfor the current dpll device.","Type":"Description","Title":"dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync("}]}}}