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CVE-2026-98208

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Last modified

CVE-2026-98208 is a vulnerability of currently unknown severity. 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..

Description

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 8b197a5ce7a7218bb9fc721647ba0d5734f27348, < 9e992d59138fcfaa4bad7cc0750265b0a8bca100; >= 8b197a5ce7a7218bb9fc721647ba0d5734f27348, < b97b5b66c93cb4aaf6358727a73fff880a774dfd; >= 8b197a5ce7a7218bb9fc721647ba0d5734f27348, < 8a2c1bf209ba04cbd14153a771724bd5aa522fcd; >= 8b197a5ce7a7218bb9fc721647ba0d5734f27348, < 72f4c2b7a48423c708f2c348585419a1b71ab04c; >= 8b197a5ce7a7218bb9fc721647ba0d5734f27348, < fd8223c53ad9553b2a349d2a40e19bbc6e60fc48; >= 8b197a5ce7a7218bb9fc721647ba0d5734f27348, < ac866db277a4c73e84b4263773652e3aba326249; >= 8b197a5ce7a7218bb9fc721647ba0d5734f27348, < 5e142adbbdc54afbd01fad476c91cded41d22594; >= 8b197a5ce7a7218bb9fc721647ba0d5734f27348, < 53823e25793a97d07e6e98e0904bbf74cac8bc76
LinuxLinux2.6.34

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98208?
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.
How severe is CVE-2026-98208?
Severity scoring for CVE-2026-98208 is pending analysis.
How do I fix CVE-2026-98208?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST