CVE-2026-98754tty: vcc: hold port lock when clearing tty pointer in vcc_cleanup
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 88f6ecb058801e9ce7b9aabc966530118d7cd53c; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 821050631750e982007c0856c119346edba51cae; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 builds before 1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 03b49c991abb8d021ca6fe51cd173447236b0552; before 6.12.113; before 6.18.56; before 7.2.10 | CNA record |
References
- https://git.kernel.org/stable/c/88f6ecb058801e9ce7b9aabc966530118d7cd53c
- https://git.kernel.org/stable/c/821050631750e982007c0856c119346edba51cae
- https://git.kernel.org/stable/c/1a9fb9eaeb69b1f6c00bed09289a33d9fe1e7ae4
- https://git.kernel.org/stable/c/03b49c991abb8d021ca6fe51cd173447236b0552
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.