CVE-2026-98208
mmc: sdio_uart: fix xmit_fifo leak when the port table is full
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: mmc: sdio_uart: fix xmit_fifo leak when the port table is full sdio_uart_add_port() allocates the transmit fifo before claiming a slot in sdio_uart_table[]. When all UART_NR slots are taken, it returns -EBUSY with the fifo still allocated, but the probe error path only kfree()s the port, leaking the transmit fifo. Free the fifo in the failure path of sdio_uart_add_port() itself so the function retains nothing on error.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 6, 2026 |
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Affected Versions
Linux / Linux
8b197a5ce7a7218bb9fc721647ba0d5734f27348 < 9e992d59138fcfaa4bad7cc0750265b0a8bca100 8b197a5ce7a7218bb9fc721647ba0d5734f27348 < b97b5b66c93cb4aaf6358727a73fff880a774dfd 8b197a5ce7a7218bb9fc721647ba0d5734f27348 < 8a2c1bf209ba04cbd14153a771724bd5aa522fcd 8b197a5ce7a7218bb9fc721647ba0d5734f27348 < 72f4c2b7a48423c708f2c348585419a1b71ab04c 8b197a5ce7a7218bb9fc721647ba0d5734f27348 < fd8223c53ad9553b2a349d2a40e19bbc6e60fc48 8b197a5ce7a7218bb9fc721647ba0d5734f27348 < ac866db277a4c73e84b4263773652e3aba326249 8b197a5ce7a7218bb9fc721647ba0d5734f27348 < 5e142adbbdc54afbd01fad476c91cded41d22594 8b197a5ce7a7218bb9fc721647ba0d5734f27348 < 53823e25793a97d07e6e98e0904bbf74cac8bc76
Linux / Linux
2.6.34
References
git.kernel.org: https://git.kernel.org/stable/c/9e992d59138fcfaa4bad7cc0750265b0a8bca100 git.kernel.org: https://git.kernel.org/stable/c/b97b5b66c93cb4aaf6358727a73fff880a774dfd git.kernel.org: https://git.kernel.org/stable/c/8a2c1bf209ba04cbd14153a771724bd5aa522fcd git.kernel.org: https://git.kernel.org/stable/c/72f4c2b7a48423c708f2c348585419a1b71ab04c git.kernel.org: https://git.kernel.org/stable/c/fd8223c53ad9553b2a349d2a40e19bbc6e60fc48 git.kernel.org: https://git.kernel.org/stable/c/ac866db277a4c73e84b4263773652e3aba326249 git.kernel.org: https://git.kernel.org/stable/c/5e142adbbdc54afbd01fad476c91cded41d22594 git.kernel.org: https://git.kernel.org/stable/c/53823e25793a97d07e6e98e0904bbf74cac8bc76