mmc: sdio_uart: fix xmit_fifo leak when the port table is full
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.
CVE-2026-98208
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98208
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348",
"lessThan": "9e992d59138fcfaa4bad7cc0750265b0a8bca100",
"versionType": "git"
},
{
"status": "affected",
"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348",
"lessThan": "b97b5b66c93cb4aaf6358727a73fff880a774dfd",
"versionType": "git"
},
{
"status": "affected",
"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348",
"lessThan": "8a2c1bf209ba04cbd14153a771724bd5aa522fcd",
"versionType": "git"
},
{
"status": "affected",
"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348",
"lessThan": "72f4c2b7a48423c708f2c348585419a1b71ab04c",
"versionType": "git"
},
{
"status": "affected",
"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348",
"lessThan": "fd8223c53ad9553b2a349d2a40e19bbc6e60fc48",
"versionType": "git"
},
{
"status": "affected",
"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348",
"lessThan": "ac866db277a4c73e84b4263773652e3aba326249",
"versionType": "git"
},
{
"status": "affected",
"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348",
"lessThan": "5e142adbbdc54afbd01fad476c91cded41d22594",
"versionType": "git"
},
{
"status": "affected",
"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348",
"lessThan": "53823e25793a97d07e6e98e0904bbf74cac8bc76",
"versionType": "git"
}
],
"programFiles": [
"drivers/mmc/core/sdio_uart.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.34"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.34",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/mmc/core/sdio_uart.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98208
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38288 · Revision 1
- Added to Heist Feed
- Publisher date