{"id":"CVE-2025-40071","summary":"tty: n_gsm: Don't block input queue by waiting MSC","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: Don't block input queue by waiting MSC\n\nCurrently gsm_queue() processes incoming frames and when opening\na DLC channel it calls gsm_dlci_open() which calls gsm_modem_update().\nIf basic mode is used it calls gsm_modem_upd_via_msc() and it\ncannot block the input queue by waiting the response to come\ninto the same input queue.\n\nInstead allow sending Modem Status Command without waiting for remote\nend to respond. Define a new function gsm_modem_send_initial_msc()\nfor this purpose. As MSC is only valid for basic encoding, it does\nnot do anything for advanced or when convergence layer type 2 is used.","modified":"2026-04-16T04:36:56.342226534Z","published":"2025-10-28T11:48:39.417Z","related":["SUSE-SU-2025:21040-1","SUSE-SU-2025:21052-1","SUSE-SU-2025:21056-1","SUSE-SU-2025:21064-1","SUSE-SU-2025:21080-1","SUSE-SU-2025:21147-1","SUSE-SU-2025:21180-1","SUSE-SU-2025:4057-1","SUSE-SU-2025:4128-1","SUSE-SU-2025:4132-1","SUSE-SU-2025:4140-1","SUSE-SU-2025:4141-1","SUSE-SU-2025:4301-1","openSUSE-SU-2025:15702-1","openSUSE-SU-2025:20091-1","openSUSE-SU-2026:10301-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40071.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3cf0b3c243e56bc43be560617416c1d9f301f44c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5416e89b81b00443cb03c88df8da097ae091a141"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c36785f9de03df56ff9b8eca30fa681a12b2310d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c5a2791a7f11939f05f95c01f0aec0c55bbf28d5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40071.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40071"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"48473802506d2d6151f59e0e764932b33b53cb3b"},{"fixed":"c36785f9de03df56ff9b8eca30fa681a12b2310d"},{"fixed":"5416e89b81b00443cb03c88df8da097ae091a141"},{"fixed":"c5a2791a7f11939f05f95c01f0aec0c55bbf28d5"},{"fixed":"3cf0b3c243e56bc43be560617416c1d9f301f44c"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"920e849b7d23ced84c9d11e11e2449e34973cfb8"},{"last_affected":"e83b4e1540469babeffcfd44a605cf8a61542598"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40071.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.18.0"},{"fixed":"6.6.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.53"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.17.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40071.json"}}],"schema_version":"1.7.5"}