CVE-2026-98755 PUBLISHED

tty: vcc: zero-initialize control packet in vcc_send_ctl()

Assigner: Linux
Reserved: 25.09.2026 Published: 18.10.2026 Updated: 18.10.2026

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

tty: vcc: zero-initialize control packet in vcc_send_ctl()

The stack-allocated struct vio_vcc pkt was partially initialized, leaving the tag.stype_env field uninitialized before being sent via ldc_write(), potentially leaking kernel stack data to the LDC peer.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 6f1a08ef02825b440126c406ea63ef6128888e15 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 4335278d0e75395cbfaf71c84b521df56d69e936 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 399aa38af1d78001612e3130b2056ea392a355ca (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 1f71f565e3585da1098ff19ca3c24687dab59185 (excl.)
  • affected from 0 to 6.12.113 (excl.)
  • affected from 0 to 6.18.56 (excl.)
  • affected from 0 to 7.2.10 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • unaffected from 6.12.113 to 6.12.* (incl.)
  • unaffected from 6.18.56 to 6.18.* (incl.)
  • unaffected from 7.2.10 to 7.2.* (incl.)
  • unaffected from 7.3-rc6 to * (incl.)

References