High
Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ This adds a check for encryption key size upon receiving L2CAP_LE_CONN_REQ which is required by L2CAP/LE/CFC/BV-15-C which expects L2CAP_CR_LE_BAD_KEY_SIZE.
Announced Group revision 1
Original source ↗CVE-2026-43134
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-2026-43134
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": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d",
"lessThan": "335071c0c3637064ec250481f589075db44fe4e6",
"versionType": "git"
},
{
"status": "affected",
"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d",
"lessThan": "fa6ad76fa8623c0a50d529cd5726fa5d819a3be4",
"versionType": "git"
},
{
"status": "affected",
"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d",
"lessThan": "9118601ff90b79e8df3c0c98f48ae00c1b02ecef",
"versionType": "git"
},
{
"status": "affected",
"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d",
"lessThan": "481ea39b342c347b6ac029f3d418486280be4e45",
"versionType": "git"
},
{
"status": "affected",
"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d",
"lessThan": "ec91078e132179b04e0c3906b599816c056ceaad",
"versionType": "git"
},
{
"status": "affected",
"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d",
"lessThan": "96581749c7c14fbec32c35728520867929600041",
"versionType": "git"
},
{
"status": "affected",
"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d",
"lessThan": "8dd43f9a9323f9c01bc8246da8d81a4c783c9e97",
"versionType": "git"
},
{
"status": "affected",
"version": "27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d",
"lessThan": "138d7eca445ef37a0333425d269ee59900ca1104",
"versionType": "git"
}
],
"programFiles": [
"net/bluetooth/l2cap_core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.252",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.202",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.165",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.128",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.16",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.6",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/l2cap_core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-43134
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40033 · Revision 1
- Added to Heist Feed
- Publisher date