{"id":"CVE-2024-50058","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: protect uart_port_dtr_rts() in uart_shutdown() too\n\nCommit af224ca2df29 (serial: core: Prevent unsafe uart port access, part\n3) added few uport == NULL checks","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: protect uart_port_dtr_rts() in uart_shutdown() too\n\nCommit af224ca2df29 (serial: core: Prevent unsafe uart port access, part\n3) added few uport == NULL checks. …","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 6.6.57","linux_kernel >= 6.7, < 6.11.4"],"patched":["linux_kernel 6.11.4"],"published":"2024-10-21","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:19:06.690","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-50058","references":[{"url":"https://git.kernel.org/stable/c/2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/399927f0f875b93f3d5a0336d382ba48b8671eb2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/602babaa84d627923713acaf5f7e9a4369e77473","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/76ed24a34223bb2c6b6162e1d8389ec4e602a290","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d7b5876a6e74cdf8468a478be6b23f2f5464ac7a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e418d91195d29d5f9c9685ff309b92b04b41dc40","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00245,"epssPercentile":0.15699,"ingestedAt":"2026-10-15T03:30:12.762Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-10-22T13:23:14.442818Z"},"slug":"CVE-2024-50058","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nserial: protect uart_port_dtr_rts() in uart_shutdown() too\n\nCommit af224ca2df29 (serial: core: Prevent unsafe uart port access, part\n3) added few uport == NULL checks. It added one to uart_shutdown(), so\nthe commit assumes, uport can be NULL in there. But right after that\nprotection, there is an unprotected \"uart_port_dtr_rts(uport, false);\"\ncall. That is invoked only if HUPCL is set, so I assume that is the\nreason why we do not see lots of these reports.\n\nOr it cannot be NULL at this point at all for some reason :P.\n\nUntil the above is investigated, stay on the safe side and move this\ndereference to the if too.\n\nI got this inconsistency from Coverity under CID 1585130. Thanks.\n\n## Affected\n\n- `linux_kernel < 6.6.57`\n- `linux_kernel >= 6.7, < 6.11.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.11.4`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}