CVE-2026-90337 (GCVE-0-2026-90337)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:08 – Updated: 2026-09-17 16:08
VLAI
Title
serial: core: do fallible allocations before the console can be registered
Summary
In the Linux kernel, the following vulnerability has been resolved: serial: core: do fallible allocations before the console can be registered serial_core_add_one_port() allocates uport->tty_groups after uart_configure_port(), which may register the console. If the allocation fails, the driver unwinds the port while its console remains registered. The earlier uport->name allocation has a related failure path that leaves state->uart_port linked to a port being freed. Failslab reproduced a NULL dereference in PL011 console output and a KASAN use-after-free in i.MX console output after failed binds. Allocate the name and tty_groups before linking the port and configuring it. Reserve space for the optional driver attribute group because config_port() may populate uport->attr_group during configuration.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 266dcff03eed0050b6af11aaf2a61ab837d7ba3f , < c2aec15f78b2e6ccd9b94216a901248511355982 (git)
Affected: 266dcff03eed0050b6af11aaf2a61ab837d7ba3f , < 1a0e4fbce5d9c1bc179a35a2fd9ed142664299e3 (git)
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Linux Linux Affected: 3.17
Unaffected: 0 , < 3.17 (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2026-09-11T19:38:34.804Z",
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        "metrics": {},
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}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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