{"id":"CVE-2024-57798","summary":"drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()\n\nWhile receiving an MST up request message from one thread in\ndrm_dp_mst_handle_up_req(), the MST topology could be removed from\nanother thread via drm_dp_mst_topology_mgr_set_mst(false), freeing\nmst_primary and setting drm_dp_mst_topology_mgr::mst_primary to NULL.\nThis could lead to a NULL deref/use-after-free of mst_primary in\ndrm_dp_mst_handle_up_req().\n\nAvoid the above by holding a reference for mst_primary in\ndrm_dp_mst_handle_up_req() while it's used.\n\nv2: Fix kfreeing the request if getting an mst_primary reference fails.","modified":"2026-02-04T04:34:00.514023Z","published":"2025-01-11T12:39:48.212Z","related":["MGASA-2025-0030","MGASA-2025-0032","SUSE-SU-2025:0289-1","SUSE-SU-2025:0428-1","SUSE-SU-2025:0499-1","SUSE-SU-2025:0555-1","SUSE-SU-2025:0556-1","SUSE-SU-2025:0557-1","SUSE-SU-2025:0576-1","SUSE-SU-2025:0577-1","SUSE-SU-2025:0577-2","SUSE-SU-2025:0771-1","SUSE-SU-2025:0867-1","USN-7379-2","USN-7380-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57798.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9735d40f5fde9970aa46e828ecc85c32571d58a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce55818b2d3a999f886af91679589e4644ff1dc8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e54b00086f7473dbda1a7d6fc47720ced157c6a8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f61b2e5e7821f868d6afc22382a66a30ee780ba0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57798.json"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-57798"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"9408cc94eb041d0c2f9f00189a613b94c0449450"},{"fixed":"f61b2e5e7821f868d6afc22382a66a30ee780ba0"},{"fixed":"9735d40f5fde9970aa46e828ecc85c32571d58a2"},{"fixed":"ce55818b2d3a999f886af91679589e4644ff1dc8"},{"fixed":"e54b00086f7473dbda1a7d6fc47720ced157c6a8"}]}],"versions":["v5.10","v5.10-rc1","v5.10-rc2","v5.10-rc3","v5.10-rc4","v5.10-rc5","v5.10-rc6","v5.10-rc7","v5.11","v5.11-rc1","v5.11-rc2","v5.11-rc3","v5.11-rc4","v5.11-rc5","v5.11-rc6","v5.11-rc7","v5.12","v5.12-rc1","v5.12-rc1-dontuse","v5.12-rc2","v5.12-rc3","v5.12-rc4","v5.12-rc5","v5.12-rc6","v5.12-rc7","v5.12-rc8","v5.13","v5.13-rc1","v5.13-rc2","v5.13-rc3","v5.13-rc4","v5.13-rc5","v5.13-rc6","v5.13-rc7","v5.14","v5.14-rc1","v5.14-rc2","v5.14-rc3","v5.14-rc4","v5.14-rc5","v5.14-rc6","v5.14-rc7","v5.15","v5.15-rc1","v5.15-rc2","v5.15-rc3","v5.15-rc4","v5.15-rc5","v5.15-rc6","v5.15-rc7","v5.16","v5.16-rc1","v5.16-rc2","v5.16-rc3","v5.16-rc4","v5.16-rc5","v5.16-rc6","v5.16-rc7","v5.16-rc8","v5.17","v5.17-rc1","v5.17-rc2","v5.17-rc3","v5.17-rc4","v5.17-rc5","v5.17-rc6","v5.17-rc7","v5.17-rc8","v5.18","v5.18-rc1","v5.18-rc2","v5.18-rc3","v5.18-rc4","v5.18-rc5","v5.18-rc6","v5.18-rc7","v5.19","v5.19-rc1","v5.19-rc2","v5.19-rc3","v5.19-rc4","v5.19-rc5","v5.19-rc6","v5.19-rc7","v5.19-rc8","v5.4","v5.4-rc5","v5.4-rc6","v5.4-rc7","v5.4-rc8","v5.5","v5.5-rc1","v5.5-rc2","v5.5-rc3","v5.5-rc4","v5.5-rc5","v5.5-rc6","v5.5-rc7","v5.6","v5.6-rc1","v5.6-rc2","v5.6-rc3","v5.6-rc4","v5.6-rc5","v5.6-rc6","v5.6-rc7","v5.7","v5.7-rc1","v5.7-rc2","v5.7-rc3","v5.7-rc4","v5.7-rc5","v5.7-rc6","v5.7-rc7","v5.8","v5.8-rc1","v5.8-rc2","v5.8-rc3","v5.8-rc4","v5.8-rc5","v5.8-rc6","v5.8-rc7","v5.9","v5.9-rc1","v5.9-rc2","v5.9-rc3","v5.9-rc4","v5.9-rc5","v5.9-rc6","v5.9-rc7","v5.9-rc8","v6.0","v6.0-rc1","v6.0-rc2","v6.0-rc3","v6.0-rc4","v6.0-rc5","v6.0-rc6","v6.0-rc7","v6.1","v6.1-rc1","v6.1-rc2","v6.1-rc3","v6.1-rc4","v6.1-rc5","v6.1-rc6","v6.1-rc7","v6.1-rc8","v6.1.1","v6.1.10","v6.1.100","v6.1.101","v6.1.102","v6.1.103","v6.1.104","v6.1.105","v6.1.106","v6.1.107","v6.1.108","v6.1.109","v6.1.11","v6.1.110","v6.1.111","v6.1.112","v6.1.113","v6.1.114","v6.1.115","v6.1.116","v6.1.117","v6.1.118","v6.1.119","v6.1.12","v6.1.120","v6.1.121","v6.1.122","v6.1.13","v6.1.14","v6.1.15","v6.1.16","v6.1.17","v6.1.18","v6.1.19","v6.1.2","v6.1.20","v6.1.21","v6.1.22","v6.1.23","v6.1.24","v6.1.25","v6.1.26","v6.1.27","v6.1.28","v6.1.29","v6.1.3","v6.1.30","v6.1.31","v6.1.32","v6.1.33","v6.1.34","v6.1.35","v6.1.36","v6.1.37","v6.1.38","v6.1.39","v6.1.4","v6.1.40","v6.1.41","v6.1.42","v6.1.43","v6.1.44","v6.1.45","v6.1.46","v6.1.47","v6.1.48","v6.1.49","v6.1.5","v6.1.50","v6.1.51","v6.1.52","v6.1.53","v6.1.54","v6.1.55","v6.1.56","v6.1.57","v6.1.58","v6.1.59","v6.1.6","v6.1.60","v6.1.61","v6.1.62","v6.1.63","v6.1.64","v6.1.65","v6.1.66","v6.1.67","v6.1.68","v6.1.69","v6.1.7","v6.1.70","v6.1.71","v6.1.72","v6.1.73","v6.1.74","v6.1.75","v6.1.76","v6.1.77","v6.1.78","v6.1.79","v6.1.8","v6.1.80","v6.1.81","v6.1.82","v6.1.83","v6.1.84","v6.1.85","v6.1.86","v6.1.87","v6.1.88","v6.1.89","v6.1.9","v6.1.90","v6.1.91","v6.1.92","v6.1.93","v6.1.94","v6.1.95","v6.1.96","v6.1.97","v6.1.98","v6.1.99","v6.10","v6.10-rc1","v6.10-rc2","v6.10-rc3","v6.10-rc4","v6.10-rc5","v6.10-rc6","v6.10-rc7","v6.11","v6.11-rc1","v6.11-rc2","v6.11-rc3","v6.11-rc4","v6.11-rc5","v6.11-rc6","v6.11-rc7","v6.12","v6.12-rc1","v6.12-rc2","v6.12-rc3","v6.12-rc4","v6.12-rc5","v6.12-rc6","v6.12-rc7","v6.12.1","v6.12.2","v6.12.3","v6.12.4","v6.12.5","v6.12.6","v6.12.7","v6.2","v6.2-rc1","v6.2-rc2","v6.2-r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