Bluetooth: ISO: fix malformed ISO_END/CONT handling
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix malformed ISO_END/CONT handling Core specification (Part C vol 4 sec 5.4.5) does not exclude empty ISO_CONT, ISO_END packets. We currently reject them if they are last. If controller sends malformed sequence ISO_START -> rx_len = 4, ISO_CONT skb->len 4, ISO_START that ends payload in ISO_CONT, we leak conn->rx_skb. If controller sends too long ISO_END, we panic on skb_put. If controller sends too short ISO_END we accept it. Fix by marking unfinished ISO_START via conn->rx_skb != NULL. Check skb->len properly before skb_put. Combine the ISO_CONT/END code paths as they require the same initial checks. Reject too short ISO_END packets.
CVE-2026-72334
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-2026-72334
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": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"lessThan": "d2df29dc9abda2fc10ff522eac0969f5b77b3637",
"versionType": "git"
},
{
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"lessThan": "7250b6b5ba9b737cff2c2c1d0760360c7b6bca00",
"versionType": "git"
},
{
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"lessThan": "49aeb54e3c912ef785311264a51ab9f3698e421b",
"versionType": "git"
},
{
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"lessThan": "5e53e285f8c989662e34d4938c728a94226bff34",
"versionType": "git"
},
{
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"lessThan": "990e65eb9387c4ddfa7f68782b6644c2c35d489f",
"versionType": "git"
},
{
"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"lessThan": "e054c1a6ae7310d2815778fddb87da616e11c255",
"versionType": "git"
}
],
"programFiles": [
"net/bluetooth/iso.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/bluetooth/iso.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72334
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33025 · Revision 1
- Added to Heist Feed
- Publisher date