{"id":"CVE-2022-49304","url":"https://www.cyber-defence.io/tools/cve/CVE-2022-49304","generatedAt":"2026-10-27T17:45:19.976Z","title":"In the Linux kernel, the following vulnerability has been resolved: drivers: tty: serial: Fix deadlock in sa1100_set_termios() There is a deadlock in sa1100_set_termios(), which is shown below: (Thread 1) | (Thread 2) | sa1100_enable_ms()…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: tty: serial: Fix deadlock in sa1100_set_termios()\n\nThere is a deadlock in sa1100_set_termios(), which is shown\nbelow:\n\n   (Thread 1)              |      (Thread 2)\n                           | sa1100_enable_ms()\nsa1100_set_termios()       |  mod_timer()\n spin_lock_irqsave() //(1) |  (wait a time)\n ...                       | sa1100_timeout()\n del_timer_sync()          |  spin_lock_irqsave() //(2)\n (wait timer to stop)      |  ...\n\nWe hold sport->port.lock in position (1) of thread 1 and\nuse del_timer_sync() to wait timer to stop, but timer handler\nalso need sport->port.lock in position (2) of thread 2. As a result,\nsa1100_set_termios() will block forever.\n\nThis patch moves del_timer_sync() before spin_lock_irqsave()\nin order to prevent the deadlock.","published":"2025-02-26T07:01:07.000Z","lastModified":"2026-06-17T05:17:40.000Z","status":"Modified","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-667"],"affected":["linux/linux kernel"],"epss":{"score":0.00203,"percentile":0.1017,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/0976808d0d171ec837d4bd3e9f4ad4a00ab703b8","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/09a5958a2452ad22d0cb638711ef34ea1863a829","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2cbfc38df580bff5b2fe19f21c1a7520efcc4b3b","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/34d91e555e5582cffdbcbb75517bc9217866823e","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/553213432ef0c295becdc08c0207d2094468f673","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/62b2caef400c1738b6d22f636c628d9f85cd4c4c","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6e2273eefab54a521d9c59efb6e1114e742bdf41","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/85e20f8bd31a46d8c60103d0274a8ebe8f47f2b2","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/920f0ae7a129ffee98a106e3bbdfd61a2a59e939","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-49304","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}