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CVE-2026-89740

serial: imx: serialize imx_uart_ports[] lifetime

In the Linux kernel, the following vulnerability has been resolved:

serial: imx: serialize imx_uart_ports[] lifetime

imx_uart_probe() publishes its devm-allocated port in imx_uart_ports[]
before uart_add_one_port() because console setup uses the table. The entry
is not cleared when adding the port fails or after removal, leaving a
dangling pointer.

A sibling probe can register the shared console through that stale entry.
This was reproduced under KASAN on QEMU mcimx6ul-evk by unbinding a
sibling UART, unbinding the console UART and rebinding the sibling.

Keep the entry valid through uart_remove_one_port(), then clear it. Protect
port addition and removal together with their table updates so sibling
operations cannot interleave. Reject an occupied slot rather than
clobbering an active port during a duplicate-line probe.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version dbff4e9ea2e83fda89143389bfb229cb29425a32
Version < 681696ae9e4a28bdf54893c807dfe4a6c08e30a5
Status affected
Version dbff4e9ea2e83fda89143389bfb229cb29425a32
Version < 28b932202fcdbeb2ef58d89ce4363f480433c234
Status affected
Version dbff4e9ea2e83fda89143389bfb229cb29425a32
Version < 7429dce56a73bc080a8c072edb167106f73a08ae
Status affected
Version dbff4e9ea2e83fda89143389bfb229cb29425a32
Version < 8b0b29fdcb47907ae0296b8fe829e918e05e300f
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 2.6.27
Status affected
Version 0
Version < 2.6.27
Status unaffected
Version <= 6.12.*
Version 6.12.109
Status unaffected
Version <= 6.18.*
Version 6.18.50
Status unaffected
Version <= 7.2.*
Version 7.2.4
Status unaffected
Version <= *
Version 7.3-rc1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.1
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/681696ae9e4a28bdf54893c807dfe4a6c08e30a5
https://git.kernel.org/stable/c/28b932202fcdbeb2ef58d89ce4363f480433c234
https://git.kernel.org/stable/c/7429dce56a73bc080a8c072edb167106f73a08ae
https://git.kernel.org/stable/c/8b0b29fdcb47907ae0296b8fe829e918e05e300f