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

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Summary

CVECVE-2026-98755
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:29 UTC
Updated2026-10-19 10:19:39 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 6f1a08ef02825b440126c406ea63ef6128888e15 git Not specified
CNA Linux Linux affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 4335278d0e75395cbfaf71c84b521df56d69e936 git Not specified
CNA Linux Linux affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 399aa38af1d78001612e3130b2056ea392a355ca git Not specified
CNA Linux Linux affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1f71f565e3585da1098ff19ca3c24687dab59185 git Not specified
CNA Linux Linux affected 6.12.113 semver Not specified
CNA Linux Linux affected 6.18.56 semver Not specified
CNA Linux Linux affected 7.2.10 semver Not specified
CNA Linux Linux unaffected 6.12.113 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.56 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.10 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/4335278d0e75395cbfaf71c84b521df56d69e936 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/399aa38af1d78001612e3130b2056ea392a355ca 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6f1a08ef02825b440126c406ea63ef6128888e15 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1f71f565e3585da1098ff19ca3c24687dab59185 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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