CVE-2025-40071

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40071", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.159Z", "datePublished": "2025-10-28T11:48:39.417Z", "dateUpdated": "2026-10-30T12:22:47.159Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:22:47.159Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/tty/n_gsm.c"], "versions": [{"version": "48473802506d2d6151f59e0e764932b33b53cb3b", "lessThan": "8fcc22d6b90304d8b7436e101562218ea3faf73b", "status": "affected", "versionType": "git"}, {"version": "48473802506d2d6151f59e0e764932b33b53cb3b", "lessThan": "c36785f9de03df56ff9b8eca30fa681a12b2310d", "status": "affected", "versionType": "git"}, {"version": "48473802506d2d6151f59e0e764932b33b53cb3b", "lessThan": "5416e89b81b00443cb03c88df8da097ae091a141", "status": "affected", "versionType": "git"}, {"version": "48473802506d2d6151f59e0e764932b33b53cb3b", "lessThan": "c5a2791a7f11939f05f95c01f0aec0c55bbf28d5", "status": "affected", "versionType": "git"}, {"version": "48473802506d2d6151f59e0e764932b33b53cb3b", "lessThan": "3cf0b3c243e56bc43be560617416c1d9f301f44c", "status": "affected", "versionType": "git"}, {"version": "920e849b7d23ced84c9d11e11e2449e34973cfb8", "status": "affected", "versionType": "git"}, {"version": "e83b4e1540469babeffcfd44a605cf8a61542598", "status": "affected", "versionType": "git"}, {"version": "5.15.54", "lessThan": "5.16", "status": "affected", "versionType": "semver"}, {"version": "5.17.6", "lessThan": "5.18", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/tty/n_gsm.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.112", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.53", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.3", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "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": "5.18", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.6.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.17.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8fcc22d6b90304d8b7436e101562218ea3faf73b"}, {"url": "https://git.kernel.org/stable/c/c36785f9de03df56ff9b8eca30fa681a12b2310d"}, {"url": "https://git.kernel.org/stable/c/5416e89b81b00443cb03c88df8da097ae091a141"}, {"url": "https://git.kernel.org/stable/c/c5a2791a7f11939f05f95c01f0aec0c55bbf28d5"}, {"url": "https://git.kernel.org/stable/c/3cf0b3c243e56bc43be560617416c1d9f301f44c"}], "title": "tty: n_gsm: Don't block input queue by waiting MSC", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/tty/n_gsm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8fcc22d6b90304d8b7436e101562218ea3faf73b", "status": "affected", "version": "48473802506d2d6151f59e0e764932b33b53cb3b", "versionType": "git"}, {"lessThan": "c36785f9de03df56ff9b8eca30fa681a12b2310d", "status": "affected", "version": "48473802506d2d6151f59e0e764932b33b53cb3b", "versionType": "git"}, {"lessThan": "5416e89b81b00443cb03c88df8da097ae091a141", "status": "affected", "version": "48473802506d2d6151f59e0e764932b33b53cb3b", "versionType": "git"}, {"lessThan": "c5a2791a7f11939f05f95c01f0aec0c55bbf28d5", "status": "affected", "version": "48473802506d2d6151f59e0e764932b33b53cb3b", "versionType": "git"}, {"lessThan": "3cf0b3c243e56bc43be560617416c1d9f301f44c", "status": "affected", "version": "48473802506d2d6151f59e0e764932b33b53cb3b", "versionType": "git"}, {"status": "affected", "version": "920e849b7d23ced84c9d11e11e2449e34973cfb8", "versionType": "git"}, {"status": "affected", "version": "e83b4e1540469babeffcfd44a605cf8a61542598", "versionType": "git"}, {"lessThan": "5.16", "status": "affected", "version": "5.15.54", "versionType": "semver"}, {"lessThan": "5.18", "status": "affected", "version": "5.17.6", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/tty/n_gsm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.18"}, {"lessThan": "5.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.112", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.53", "versionType": "semver"}, {"lessThanOrEqual": "6.17.*", "status": "unaffected", "version": "6.17.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.18", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ntty: n_gsm: No bloquear la cola de entrada al esperar MSC\n\nActualmente, gsm_queue() procesa las tramas entrantes y al abrir un canal DLC llama a gsm_dlci_open(), que a su vez llama a gsm_modem_update(). Si se utiliza el modo b\u00e1sico, llama a gsm_modem_upd_via_msc() y no puede bloquear la cola de entrada al esperar que la respuesta llegue a la misma cola de entrada.\n\nEn su lugar, permitir el env\u00edo del Comando de Estado del M\u00f3dem sin esperar a que el extremo remoto responda. Definir una nueva funci\u00f3n gsm_modem_send_initial_msc() para este prop\u00f3sito. Como MSC solo es v\u00e1lido para la codificaci\u00f3n b\u00e1sica, no hace nada para avanzado o cuando se utiliza la capa de convergencia tipo 2."}], "id": "CVE-2025-40071", "lastModified": "2026-10-30T13:18:13.077", "metrics": {}, "published": "2025-10-28T12:15:41.613", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3cf0b3c243e56bc43be560617416c1d9f301f44c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5416e89b81b00443cb03c88df8da097ae091a141"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8fcc22d6b90304d8b7436e101562218ea3faf73b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c36785f9de03df56ff9b8eca30fa681a12b2310d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c5a2791a7f11939f05f95c01f0aec0c55bbf28d5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: tty: n_gsm: Don't block input queue by waiting MSC", "id": "2406742", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2406742"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-40071", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-10-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40071\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40071\nhttps://lore.kernel.org/linux-cve-announce/2025102818-CVE-2025-40071-6cff@gregkh/T"], "threat_severity": "Important"}

{"created": "2025-10-29T10:58:16.573786+00:00", "updated": "2025-10-29T10:58:16.573810+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}