{"id":"CVE-2024-38602","summary":"ax25: Fix reference count leak issues of ax25_dev","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nax25: Fix reference count leak issues of ax25_dev\n\nThe ax25_addr_ax25dev() and ax25_dev_device_down() exist a reference\ncount leak issue of the object \"ax25_dev\".\n\nMemory leak issue in ax25_addr_ax25dev():\n\nThe reference count of the object \"ax25_dev\" can be increased multiple\ntimes in ax25_addr_ax25dev(). This will cause a memory leak.\n\nMemory leak issues in ax25_dev_device_down():\n\nThe reference count of ax25_dev is set to 1 in ax25_dev_device_up() and\nthen increase the reference count when ax25_dev is added to ax25_dev_list.\nAs a result, the reference count of ax25_dev is 2. But when the device is\nshutting down. The ax25_dev_device_down() drops the reference count once\nor twice depending on if we goto unlock_put or not, which will cause\nmemory leak.\n\nAs for the issue of ax25_addr_ax25dev(), it is impossible for one pointer\nto be on a list twice. So add a break in ax25_addr_ax25dev(). As for the\nissue of ax25_dev_device_down(), increase the reference count of ax25_dev\nonce in ax25_dev_device_up() and decrease the reference count of ax25_dev\nafter it is removed from the ax25_dev_list.","modified":"2026-04-16T04:31:50.016607057Z","published":"2024-06-19T13:48:13.768Z","related":["SUSE-SU-2024:2571-1","SUSE-SU-2024:2896-1","SUSE-SU-2024:2973-1","SUSE-SU-2024:3190-1","SUSE-SU-2024:3209-1","SUSE-SU-2024:3483-1","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/2024/38xxx/CVE-2024-38602.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1ea02699c7557eeb35ccff2bd822de1b3e09d868"},{"type":"WEB","url":"https://git.kernel.org/stable/c/38eb01edfdaa1562fa00429be2e33f45383b1b3a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/81d8240b0a243b3ddd8fa8aa172f1acc2f7cc8f3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ae467750a3765dd1092eb29f58247950a2f9b60c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b505e0319852b08a3a716b64620168eab21f4ced"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/38xxx/CVE-2024-38602.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-38602"},{"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":"d01ffb9eee4af165d83b08dd73ebdf9fe94a519b"},{"fixed":"ae467750a3765dd1092eb29f58247950a2f9b60c"},{"fixed":"38eb01edfdaa1562fa00429be2e33f45383b1b3a"},{"fixed":"81d8240b0a243b3ddd8fa8aa172f1acc2f7cc8f3"},{"fixed":"1ea02699c7557eeb35ccff2bd822de1b3e09d868"},{"fixed":"b505e0319852b08a3a716b64620168eab21f4ced"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"ef0a2a0565727a48f2e36a2c461f8b1e3a61922d"},{"last_affected":"e2b558fe507a1ed4c43db2b0057fc6e41f20a14c"},{"last_affected":"418993bbaafb0cd48f904ba68eeda052d624c821"},{"last_affected":"5ea00fc60676c0eebfa8560ec461209d638bca9d"},{"last_affected":"9af0fd5c4453a44c692be0cbb3724859b75d739b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38602.json"}}],"schema_version":"1.7.5"}