{"id":"CVE-2026-98208","summary":"mmc: sdio_uart: fix xmit_fifo leak when the port table is full","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: sdio_uart: fix xmit_fifo leak when the port table is full\n\nsdio_uart_add_port() allocates the transmit fifo before claiming a\nslot in sdio_uart_table[].  When all UART_NR slots are taken, it\nreturns -EBUSY with the fifo still allocated, but the probe error\npath only kfree()s the port, leaking the transmit fifo.\n\nFree the fifo in the failure path of sdio_uart_add_port() itself so\nthe function retains nothing on error.","modified":"2026-10-08T02:52:53.434404489Z","published":"2026-10-06T08:44:45.098Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98208.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/53823e25793a97d07e6e98e0904bbf74cac8bc76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5e142adbbdc54afbd01fad476c91cded41d22594"},{"type":"WEB","url":"https://git.kernel.org/stable/c/72f4c2b7a48423c708f2c348585419a1b71ab04c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8a2c1bf209ba04cbd14153a771724bd5aa522fcd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9e992d59138fcfaa4bad7cc0750265b0a8bca100"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ac866db277a4c73e84b4263773652e3aba326249"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b97b5b66c93cb4aaf6358727a73fff880a774dfd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fd8223c53ad9553b2a349d2a40e19bbc6e60fc48"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98208.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98208"},{"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":"8b197a5ce7a7218bb9fc721647ba0d5734f27348"},{"fixed":"9e992d59138fcfaa4bad7cc0750265b0a8bca100"},{"fixed":"b97b5b66c93cb4aaf6358727a73fff880a774dfd"},{"fixed":"8a2c1bf209ba04cbd14153a771724bd5aa522fcd"},{"fixed":"72f4c2b7a48423c708f2c348585419a1b71ab04c"},{"fixed":"fd8223c53ad9553b2a349d2a40e19bbc6e60fc48"},{"fixed":"ac866db277a4c73e84b4263773652e3aba326249"},{"fixed":"5e142adbbdc54afbd01fad476c91cded41d22594"},{"fixed":"53823e25793a97d07e6e98e0904bbf74cac8bc76"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98208.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.34"},{"fixed":"5.10.271"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.222"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98208.json"}}],"schema_version":"1.9.0"}