{"api_version":"1","generated_at":"2026-10-20T15:39:06+00:00","cve":"CVE-2026-98755","urls":{"html":"https://cve.report/CVE-2026-98755","api":"https://cve.report/api/cve/CVE-2026-98755.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98755","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98755"},"summary":{"title":"tty: vcc: zero-initialize control packet in vcc_send_ctl()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: vcc: zero-initialize control packet in vcc_send_ctl()\n\nThe stack-allocated struct vio_vcc pkt was partially initialized,\nleaving the tag.stype_env field uninitialized before being sent via\nldc_write(), potentially leaking kernel stack data to the LDC peer.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:29","updated_at":"2026-10-19 10:19:39"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/4335278d0e75395cbfaf71c84b521df56d69e936","name":"https://git.kernel.org/stable/c/4335278d0e75395cbfaf71c84b521df56d69e936","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/399aa38af1d78001612e3130b2056ea392a355ca","name":"https://git.kernel.org/stable/c/399aa38af1d78001612e3130b2056ea392a355ca","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6f1a08ef02825b440126c406ea63ef6128888e15","name":"https://git.kernel.org/stable/c/6f1a08ef02825b440126c406ea63ef6128888e15","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1f71f565e3585da1098ff19ca3c24687dab59185","name":"https://git.kernel.org/stable/c/1f71f565e3585da1098ff19ca3c24687dab59185","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98755","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98755","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 6f1a08ef02825b440126c406ea63ef6128888e15 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 4335278d0e75395cbfaf71c84b521df56d69e936 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 399aa38af1d78001612e3130b2056ea392a355ca git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1f71f565e3585da1098ff19ca3c24687dab59185 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.113 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.56 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.2.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.56 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.10 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/tty/vcc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6f1a08ef02825b440126c406ea63ef6128888e15","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"4335278d0e75395cbfaf71c84b521df56d69e936","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"399aa38af1d78001612e3130b2056ea392a355ca","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"1f71f565e3585da1098ff19ca3c24687dab59185","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"6.12.113","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.18.56","status":"affected","version":"0","versionType":"semver"},{"lessThan":"7.2.10","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/tty/vcc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.56","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.56","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: vcc: zero-initialize control packet in vcc_send_ctl()\n\nThe stack-allocated struct vio_vcc pkt was partially initialized,\nleaving the tag.stype_env field uninitialized before being sent via\nldc_write(), potentially leaking kernel stack data to the LDC peer."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:25:08.655Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6f1a08ef02825b440126c406ea63ef6128888e15"},{"url":"https://git.kernel.org/stable/c/4335278d0e75395cbfaf71c84b521df56d69e936"},{"url":"https://git.kernel.org/stable/c/399aa38af1d78001612e3130b2056ea392a355ca"},{"url":"https://git.kernel.org/stable/c/1f71f565e3585da1098ff19ca3c24687dab59185"}],"title":"tty: vcc: zero-initialize control packet in vcc_send_ctl()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98755","datePublished":"2026-10-18T15:47:41.106Z","dateReserved":"2026-09-25T10:25:14.368Z","dateUpdated":"2026-10-19T09:25:08.655Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:29","lastModifiedDate":"2026-10-19 10:19:39","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98755","Ordinal":"1","Title":"tty: vcc: zero-initialize control packet in vcc_send_ctl()","CVE":"CVE-2026-98755","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98755","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: vcc: zero-initialize control packet in vcc_send_ctl()\n\nThe stack-allocated struct vio_vcc pkt was partially initialized,\nleaving the tag.stype_env field uninitialized before being sent via\nldc_write(), potentially leaking kernel stack data to the LDC peer.","Type":"Description","Title":"tty: vcc: zero-initialize control packet in vcc_send_ctl()"}]}}}