{"id":"CVE-2024-36016","summary":"tty: n_gsm: fix possible out-of-bounds in gsm0_receive()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: fix possible out-of-bounds in gsm0_receive()\n\nAssuming the following:\n- side A configures the n_gsm in basic option mode\n- side B sends the header of a basic option mode frame with data length 1\n- side A switches to advanced option mode\n- side B sends 2 data bytes which exceeds gsm-\u003elen\n  Reason: gsm-\u003elen is not used in advanced option mode.\n- side A switches to basic option mode\n- side B keeps sending until gsm0_receive() writes past gsm-\u003ebuf\n  Reason: Neither gsm-\u003estate nor gsm-\u003elen have been reset after\n  reconfiguration.\n\nFix this by changing gsm-\u003ecount to gsm-\u003elen comparison from equal to less\nthan. Also add upper limit checks against the constant MAX_MRU in\ngsm0_receive() and gsm1_receive() to harden against memory corruption of\ngsm-\u003elen and gsm-\u003emru.\n\nAll other checks remain as we still need to limit the data according to the\nuser configuration and actual payload size.","modified":"2026-04-02T11:59:59.542315Z","published":"2024-05-29T18:46:34.778Z","related":["ALSA-2024:5102","ALSA-2024:6997","SUSE-SU-2024:2008-1","SUSE-SU-2024:2019-1","SUSE-SU-2024:2135-1","SUSE-SU-2024:2190-1","SUSE-SU-2024:2203-1","SUSE-SU-2024:2360-1","SUSE-SU-2024:2381-1","SUSE-SU-2024:2561-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36016.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0fb736c9931e02dbc7d9a75044c8e1c039e50f04"},{"type":"WEB","url":"https://git.kernel.org/stable/c/46f52c89a7e7d2691b97a9728e4591d071ca8abc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/47388e807f85948eefc403a8a5fdc5b406a65d5a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4c267110fc110390704cc065edb9817fdd10ff54"},{"type":"WEB","url":"https://git.kernel.org/stable/c/774d83b008eccb1c48c14dc5486e7aa255731350"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9513d4148950b05bc99fa7314dc883cc0e1605e5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b890d45aaf02b564e6cae2d2a590f9649330857d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f126ce7305fe88f49cdabc6db4168b9318898ea3"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36016.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-36016"},{"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":"e1eaea46bb4020b38a141b84f88565d4603f8dd0"},{"fixed":"9513d4148950b05bc99fa7314dc883cc0e1605e5"},{"fixed":"b229bc6c6ea9fe459fc3fa94fd0a27a2f32aca56"},{"fixed":"0fb736c9931e02dbc7d9a75044c8e1c039e50f04"},{"fixed":"4c267110fc110390704cc065edb9817fdd10ff54"},{"fixed":"46f52c89a7e7d2691b97a9728e4591d071ca8abc"},{"fixed":"774d83b008eccb1c48c14dc5486e7aa255731350"},{"fixed":"f126ce7305fe88f49cdabc6db4168b9318898ea3"},{"fixed":"b890d45aaf02b564e6cae2d2a590f9649330857d"},{"fixed":"47388e807f85948eefc403a8a5fdc5b406a65d5a"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-36016.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}