CVE-2026-98754

CVE-2026-98754: vulnerability in Linux

tty: vcc: hold port lock when clearing tty pointer in vcc_cleanup

Published · Updated

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved: tty: vcc: hold port lock when clearing tty pointer in vcc_cleanup vcc_cleanup() sets port->tty to NULL without holding port->lock, racing with vcc_event() LDC callbacks that read port->tty under port->lock and then use tty->port. This can cause a use-after-free when the callback dereferences tty->port after cleanup has already destroyed and freed it.
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/03b49c991abb8d021ca6fe51cd173447236b0552https://git.kernel.org/stable/c/1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4https://git.kernel.org/stable/c/57753441ef84bee3bf0e9ee1e3778d119c44aa32https://git.kernel.org/stable/c/821050631750e982007c0856c119346edba51caehttps://git.kernel.org/stable/c/88f6ecb058801e9ce7b9aabc966530118d7cd53c