tty: vcc: zero-initialize control packet in vcc_send_ctl()
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.
CVE-2026-98755
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98755
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "4b59afc8af3143ae03e4f9b81ca66aa5a1c1ebed",
"versionType": "git"
},
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "6f1a08ef02825b440126c406ea63ef6128888e15",
"versionType": "git"
},
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "4335278d0e75395cbfaf71c84b521df56d69e936",
"versionType": "git"
},
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "399aa38af1d78001612e3130b2056ea392a355ca",
"versionType": "git"
},
{
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "1f71f565e3585da1098ff19ca3c24687dab59185",
"versionType": "git"
},
{
"status": "affected",
"version": "0",
"lessThan": "6.6.160",
"versionType": "semver"
},
{
"status": "affected",
"version": "0",
"lessThan": "6.12.113",
"versionType": "semver"
},
{
"status": "affected",
"version": "0",
"lessThan": "6.18.56",
"versionType": "semver"
},
{
"status": "affected",
"version": "0",
"lessThan": "7.2.10",
"versionType": "semver"
}
],
"programFiles": [
"drivers/tty/vcc.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/tty/vcc.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98755
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48952 · Revision 1
- Added to Heist Feed
- Publisher date