{"id":"CVE-2025-39998","summary":"scsi: target: target_core_configfs: Add length check to avoid buffer overflow","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: target_core_configfs: Add length check to avoid buffer overflow\n\nA buffer overflow arises from the usage of snprintf to write into the\nbuffer \"buf\" in target_lu_gp_members_show function located in\n/drivers/target/target_core_configfs.c. This buffer is allocated with\nsize LU_GROUP_NAME_BUF (256 bytes).\n\nsnprintf(...) formats multiple strings into buf with the HBA name\n(hba-\u003ehba_group.cg_item), a slash character, a devicename (dev-\u003e\ndev_group.cg_item) and a newline character, the total formatted string\nlength may exceed the buffer size of 256 bytes.\n\nSince snprintf() returns the total number of bytes that would have been\nwritten (the length of %s/%sn ), this value may exceed the buffer length\n(256 bytes) passed to memcpy(), this will ultimately cause function\nmemcpy reporting a buffer overflow error.\n\nAn additional check of the return value of snprintf() can avoid this\nbuffer overflow.","modified":"2026-04-18T18:29:44.771859261Z","published":"2025-10-15T07:58:22.354Z","related":["SUSE-SU-2026:1078-1","SUSE-SU-2026:21114-1","SUSE-SU-2026:21123-1","openSUSE-SU-2025:15671-1","openSUSE-SU-2026:10301-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39998.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/27e06650a5eafe832a90fd2604f0c5e920857fae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4b292286949588bd2818e66ff102db278de8dd26"},{"type":"WEB","url":"https://git.kernel.org/stable/c/53c6351597e6a17ec6619f6f060d54128cb9a187"},{"type":"WEB","url":"https://git.kernel.org/stable/c/764a91e2fc9639e07aac93bc70e387e6b1e33084"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a150275831b765b0f1de8b8ff52ec5c6933ac15d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ddc79fba132b807ff775467acceaf48b456e008b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e6eeee5dc0d9221ff96d1b229b1d0222c8871b84"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f03aa5e39da7d045615b3951d2a6ca1d7132f881"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39998.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39998"},{"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":"c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5"},{"fixed":"e6eeee5dc0d9221ff96d1b229b1d0222c8871b84"},{"fixed":"764a91e2fc9639e07aac93bc70e387e6b1e33084"},{"fixed":"ddc79fba132b807ff775467acceaf48b456e008b"},{"fixed":"e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4"},{"fixed":"f03aa5e39da7d045615b3951d2a6ca1d7132f881"},{"fixed":"53c6351597e6a17ec6619f6f060d54128cb9a187"},{"fixed":"4b292286949588bd2818e66ff102db278de8dd26"},{"fixed":"a150275831b765b0f1de8b8ff52ec5c6933ac15d"},{"fixed":"27e06650a5eafe832a90fd2604f0c5e920857fae"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39998.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.38"},{"fixed":"5.4.301"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.246"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.195"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.156"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.16.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.17.0"},{"fixed":"6.17.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39998.json"}}],"schema_version":"1.7.5"}