CVE-2026-98754
tty: vcc: hold port lock when clearing tty pointer in vcc_cleanup
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 18, 2026 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 88f6ecb058801e9ce7b9aabc966530118d7cd53c 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 821050631750e982007c0856c119346edba51cae 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 03b49c991abb8d021ca6fe51cd173447236b0552 0 < 6.12.113 0 < 6.18.56 0 < 7.2.10
Linux / Linux
All versions affected References
git.kernel.org: https://git.kernel.org/stable/c/88f6ecb058801e9ce7b9aabc966530118d7cd53c git.kernel.org: https://git.kernel.org/stable/c/821050631750e982007c0856c119346edba51cae git.kernel.org: https://git.kernel.org/stable/c/1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4 git.kernel.org: https://git.kernel.org/stable/c/03b49c991abb8d021ca6fe51cd173447236b0552