CVE-2026-98208

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98208", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.325Z", "datePublished": "2026-10-06T08:44:45.098Z", "dateUpdated": "2026-10-19T09:15:39.242Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:15:39.242Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mmc/core/sdio_uart.c"], "versions": [{"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "lessThan": "9e992d59138fcfaa4bad7cc0750265b0a8bca100", "status": "affected", "versionType": "git"}, {"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "lessThan": "b97b5b66c93cb4aaf6358727a73fff880a774dfd", "status": "affected", "versionType": "git"}, {"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "lessThan": "8a2c1bf209ba04cbd14153a771724bd5aa522fcd", "status": "affected", "versionType": "git"}, {"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "lessThan": "72f4c2b7a48423c708f2c348585419a1b71ab04c", "status": "affected", "versionType": "git"}, {"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "lessThan": "fd8223c53ad9553b2a349d2a40e19bbc6e60fc48", "status": "affected", "versionType": "git"}, {"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "lessThan": "ac866db277a4c73e84b4263773652e3aba326249", "status": "affected", "versionType": "git"}, {"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "lessThan": "5e142adbbdc54afbd01fad476c91cded41d22594", "status": "affected", "versionType": "git"}, {"version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "lessThan": "53823e25793a97d07e6e98e0904bbf74cac8bc76", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mmc/core/sdio_uart.c"], "versions": [{"version": "2.6.34", "status": "affected"}, {"version": "0", "lessThan": "2.6.34", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.54", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.8", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9e992d59138fcfaa4bad7cc0750265b0a8bca100"}, {"url": "https://git.kernel.org/stable/c/b97b5b66c93cb4aaf6358727a73fff880a774dfd"}, {"url": "https://git.kernel.org/stable/c/8a2c1bf209ba04cbd14153a771724bd5aa522fcd"}, {"url": "https://git.kernel.org/stable/c/72f4c2b7a48423c708f2c348585419a1b71ab04c"}, {"url": "https://git.kernel.org/stable/c/fd8223c53ad9553b2a349d2a40e19bbc6e60fc48"}, {"url": "https://git.kernel.org/stable/c/ac866db277a4c73e84b4263773652e3aba326249"}, {"url": "https://git.kernel.org/stable/c/5e142adbbdc54afbd01fad476c91cded41d22594"}, {"url": "https://git.kernel.org/stable/c/53823e25793a97d07e6e98e0904bbf74cac8bc76"}], "title": "mmc: sdio_uart: fix xmit_fifo leak when the port table is full", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/mmc/core/sdio_uart.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9e992d59138fcfaa4bad7cc0750265b0a8bca100", "status": "affected", "version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "versionType": "git"}, {"lessThan": "b97b5b66c93cb4aaf6358727a73fff880a774dfd", "status": "affected", "version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "versionType": "git"}, {"lessThan": "8a2c1bf209ba04cbd14153a771724bd5aa522fcd", "status": "affected", "version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "versionType": "git"}, {"lessThan": "72f4c2b7a48423c708f2c348585419a1b71ab04c", "status": "affected", "version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "versionType": "git"}, {"lessThan": "fd8223c53ad9553b2a349d2a40e19bbc6e60fc48", "status": "affected", "version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "versionType": "git"}, {"lessThan": "ac866db277a4c73e84b4263773652e3aba326249", "status": "affected", "version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "versionType": "git"}, {"lessThan": "5e142adbbdc54afbd01fad476c91cded41d22594", "status": "affected", "version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "versionType": "git"}, {"lessThan": "53823e25793a97d07e6e98e0904bbf74cac8bc76", "status": "affected", "version": "8b197a5ce7a7218bb9fc721647ba0d5734f27348", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/mmc/core/sdio_uart.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.34"}, {"lessThan": "2.6.34", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.54", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-98208", "lastModified": "2026-10-19T10:18:21.490", "metrics": {}, "published": "2026-10-06T09:18:07.017", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/53823e25793a97d07e6e98e0904bbf74cac8bc76"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5e142adbbdc54afbd01fad476c91cded41d22594"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/72f4c2b7a48423c708f2c348585419a1b71ab04c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8a2c1bf209ba04cbd14153a771724bd5aa522fcd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9e992d59138fcfaa4bad7cc0750265b0a8bca100"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ac866db277a4c73e84b4263773652e3aba326249"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b97b5b66c93cb4aaf6358727a73fff880a774dfd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fd8223c53ad9553b2a349d2a40e19bbc6e60fc48"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: mmc: sdio_uart: fix xmit_fifo leak when the port table is full", "id": "2546451", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546451"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmmc: sdio_uart: fix xmit_fifo leak when the port table is full\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.\nFree the fifo in the failure path of sdio_uart_add_port() itself so\nthe function retains nothing on error.", "A flaw was found in the Linux kernel's SDIO UART driver. When registering a new device port while all available port slots are occupied, the driver fails to release an allocated transmit buffer during error handling. A local user could exploit this flaw by repeatedly triggering failed device attachments, resulting in a memory leak and a potential Denial of Service (DoS) due to memory exhaustion."], "name": "CVE-2026-98208", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98208\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98208\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98208.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8b197a5ce7a7218bb9fc721647ba0d5734f27348,9e992d59138fcfaa4bad7cc0750265b0a8bca100)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8b197a5ce7a7218bb9fc721647ba0d5734f27348,b97b5b66c93cb4aaf6358727a73fff880a774dfd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8b197a5ce7a7218bb9fc721647ba0d5734f27348,8a2c1bf209ba04cbd14153a771724bd5aa522fcd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8b197a5ce7a7218bb9fc721647ba0d5734f27348,72f4c2b7a48423c708f2c348585419a1b71ab04c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8b197a5ce7a7218bb9fc721647ba0d5734f27348,fd8223c53ad9553b2a349d2a40e19bbc6e60fc48)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8b197a5ce7a7218bb9fc721647ba0d5734f27348,ac866db277a4c73e84b4263773652e3aba326249)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8b197a5ce7a7218bb9fc721647ba0d5734f27348,5e142adbbdc54afbd01fad476c91cded41d22594)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8b197a5ce7a7218bb9fc721647ba0d5734f27348,53823e25793a97d07e6e98e0904bbf74cac8bc76)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.34"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.34)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.271,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.222,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.189,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.158,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.54,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.8,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc4,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-06T15:00:18.391535+00:00", "updated": "2026-10-09T17:15:09.563347+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}