{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68378","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-30T09:28:09.387Z","datePublished":"2026-08-10T12:03:56.590Z","dateUpdated":"2026-08-17T05:04:24.219Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:04:24.219Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dpll/dpll_netlink.c"],"versions":[{"version":"40466ea1827c46c6435fab9b21b63b80733e2d07","lessThan":"66fbe0499ef517ab161b96c49886a891851f6481","status":"affected","versionType":"git"},{"version":"58256a26bfb37a94738dd65618b1f31f460f8d91","lessThan":"51c2fcc4cd2e4c52bd1970558f6e5356fdc51154","status":"affected","versionType":"git"},{"version":"58256a26bfb37a94738dd65618b1f31f460f8d91","lessThan":"4b3e6b9fdaeb40c6a2f7c41db3888b6ee628bdd2","status":"affected","versionType":"git"},{"version":"58256a26bfb37a94738dd65618b1f31f460f8d91","lessThan":"d2e914a4a0d0f753dbae830264850d044026167c","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dpll/dpll_netlink.c"],"versions":[{"version":"6.17","status":"affected"},{"version":"0","lessThan":"6.17","status":"unaffected","versionType":"semver"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.2"}]}]}],"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"}}}}