{"id":"CVE-2026-90337","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: do fallible allocations before the console can be registered\n\nserial_core_add_one_port() allocates uport->tty_groups after\nuart_configure_port(), which ma…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: do fallible allocations before the console can be registered\n\nserial_core_add_one_port() allocates uport->tty_groups after\nuart_configure_port(), which ma…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 266dcff03eed0050b6af11aaf2a61ab837d7ba3f < c2aec15f78b2e6ccd9b94216a901248511355982","Linux >= 266dcff03eed0050b6af11aaf2a61ab837d7ba3f < 1a0e4fbce5d9c1bc179a35a2fd9ed142664299e3","Linux 3.17"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:32.290","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90337","references":[{"url":"https://git.kernel.org/stable/c/1a0e4fbce5d9c1bc179a35a2fd9ed142664299e3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c2aec15f78b2e6ccd9b94216a901248511355982","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.820Z","epss":0.00189,"epssPercentile":0.08798,"slug":"CVE-2026-90337","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: do fallible allocations before the console can be registered\n\nserial_core_add_one_port() allocates uport->tty_groups after\nuart_configure_port(), which may register the console. If the allocation\nfails, the driver unwinds the port while its console remains registered.\nThe earlier uport->name allocation has a related failure path that leaves\nstate->uart_port linked to a port being freed.\n\nFailslab reproduced a NULL dereference in PL011 console output and a KASAN\nuse-after-free in i.MX console output after failed binds.\n\nAllocate the name and tty_groups before linking the port and configuring\nit. Reserve space for the optional driver attribute group because\nconfig_port() may populate uport->attr_group during configuration.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}