{"id":"CVE-2025-40108","state":"PUBLISHED","title":"serial: qcom-geni: Fix blocked task","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: qcom-geni: Fix blocked task\n\nRevert commit 1afa70632c39 (\"serial: qcom-geni: Enable PM runtime for\nserial driver\") and its dependent commit 86fa39dd6fb7 (\"serial:\nqcom-geni: Enable Serial on SA8255p Qualcomm platforms\") because the\nfirst one causes regression - hang task on Qualcomm RB1 board (QRB2210)\nand unable to use serial at all during normal boot:\n\n  INFO: task kworker/u16:0:12 blocked for more than 42 seconds.\n        Not tainted 6.17.0-rc1-00004-g53e760d89498 #9\n  \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n  task:kworker/u16:0   state:D stack:0     pid:12    tgid:12    ppid:2      task_flags:0x4208060 flags:0x00000010\n  Workqueue: async async_run_entry_fn\n  Call trace:\n   __switch_to+0xe8/0x1a0 (T)\n   __schedule+0x290/0x7c0\n   schedule+0x34/0x118\n   rpm_resume+0x14c/0x66c\n   rpm_resume+0x2a4/0x66c\n   rpm_resume+0x2a4/0x66c\n   rpm_resume+0x2a4/0x66c\n   __pm_runtime_resume+0x50/0x9c\n   __driver_probe_device+0x58/0x120\n   driver_probe_device+0x3c/0x154\n   __driver_attach_async_helper+0x4c/0xc0\n   async_run_entry_fn+0x34/0xe0\n   process_one_work+0x148/0x290\n   worker_thread+0x2c4/0x3e0\n   kthread+0x118/0x1c0\n   ret_from_fork+0x10/0x20\n\nThe issue was reported on 12th of August and was ignored by author of\ncommits introducing issue for two weeks.  Only after complaining author\nproduced a fix which did not work, so if original commits cannot be\nreliably fixed for 5 weeks, they obviously are buggy and need to be\ndropped.","publishedAt":"2025-11-09T04:35:58.587Z","updatedAt":"2026-05-11T21:42:40.261Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1afa70632c390488308d8e94e037df6895a3e1ac","status":"affected","lessThan":"1e810d81769e16637bcd845ba37fbc1eba5d4bd2","versionType":"git"},{"version":"1afa70632c390488308d8e94e037df6895a3e1ac","status":"affected","lessThan":"a699213d4e6ef4286348c6439837990f121e0c03","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/qcom_geni_serial.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.17.2","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/qcom_geni_serial.c"]}],"references":["https://git.kernel.org/stable/c/1e810d81769e16637bcd845ba37fbc1eba5d4bd2","https://git.kernel.org/stable/c/a699213d4e6ef4286348c6439837990f121e0c03"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/40xxx/CVE-2025-40108.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40108","state":"PUBLISHED","datePublished":"2025-11-09T04:35:58.587Z","dateUpdated":"2026-05-11T21:42:40.261Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:20:57.167Z"},"containers":{"cna":{"title":"serial: qcom-geni: Fix blocked task","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: qcom-geni: Fix blocked task\n\nRevert commit 1afa70632c39 (\"serial: qcom-geni: Enable PM runtime for\nserial driver\") and its dependent commit 86fa39dd6fb7 (\"serial:\nqcom-geni: Enable Serial on SA8255p Qualcomm platforms\") because the\nfirst one causes regression - hang task on Qualcomm RB1 board (QRB2210)\nand unable to use serial at all during normal boot:\n\n  INFO: task kworker/u16:0:12 blocked for more than 42 seconds.\n        Not tainted 6.17.0-rc1-00004-g53e760d89498 #9\n  \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n  task:kworker/u16:0   state:D stack:0     pid:12    tgid:12    ppid:2      task_flags:0x4208060 flags:0x00000010\n  Workqueue: async async_run_entry_fn\n  Call trace:\n   __switch_to+0xe8/0x1a0 (T)\n   __schedule+0x290/0x7c0\n   schedule+0x34/0x118\n   rpm_resume+0x14c/0x66c\n   rpm_resume+0x2a4/0x66c\n   rpm_resume+0x2a4/0x66c\n   rpm_resume+0x2a4/0x66c\n   __pm_runtime_resume+0x50/0x9c\n   __driver_probe_device+0x58/0x120\n   driver_probe_device+0x3c/0x154\n   __driver_attach_async_helper+0x4c/0xc0\n   async_run_entry_fn+0x34/0xe0\n   process_one_work+0x148/0x290\n   worker_thread+0x2c4/0x3e0\n   kthread+0x118/0x1c0\n   ret_from_fork+0x10/0x20\n\nThe issue was reported on 12th of August and was ignored by author of\ncommits introducing issue for two weeks.  Only after complaining author\nproduced a fix which did not work, so if original commits cannot be\nreliably fixed for 5 weeks, they obviously are buggy and need to be\ndropped."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1afa70632c390488308d8e94e037df6895a3e1ac","status":"affected","lessThan":"1e810d81769e16637bcd845ba37fbc1eba5d4bd2","versionType":"git"},{"version":"1afa70632c390488308d8e94e037df6895a3e1ac","status":"affected","lessThan":"a699213d4e6ef4286348c6439837990f121e0c03","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/qcom_geni_serial.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.17.2","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tty/serial/qcom_geni_serial.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1e810d81769e16637bcd845ba37fbc1eba5d4bd2"},{"url":"https://git.kernel.org/stable/c/a699213d4e6ef4286348c6439837990f121e0c03"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:42:40.261Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.17.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}