nbd: restrict sockets to TCP and UDP
In the Linux kernel, the following vulnerability has been resolved: nbd: restrict sockets to TCP and UDP Recently, syzbot started to abuse NBD with all kinds of sockets. Commit cf1b2326b734 ("nbd: verify socket is supported during setup") made sure the socket supported a shutdown() method. Explicitely accept TCP and UNIX stream sockets.
CVE-2025-40080
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-2025-40080
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": "cf1b2326b734896734c6e167e41766f9cee7686a",
"lessThan": "c365e8f20f4201d873a70385bd919f0fb531e960",
"versionType": "git"
},
{
"status": "affected",
"version": "cf1b2326b734896734c6e167e41766f9cee7686a",
"lessThan": "4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7",
"versionType": "git"
},
{
"status": "affected",
"version": "cf1b2326b734896734c6e167e41766f9cee7686a",
"lessThan": "37ad11f20e164c23ce827dd455b42c0fdd29685c",
"versionType": "git"
},
{
"status": "affected",
"version": "cf1b2326b734896734c6e167e41766f9cee7686a",
"lessThan": "808e2335bc1cf2293b9e36ccc94c267c81509c71",
"versionType": "git"
},
{
"status": "affected",
"version": "cf1b2326b734896734c6e167e41766f9cee7686a",
"lessThan": "9f7c02e031570e8291a63162c6c046dc15ff85b0",
"versionType": "git"
},
{
"status": "affected",
"version": "4df728651b8a99693c69962d8e5a5b9e5a3bbcc7",
"versionType": "git"
},
{
"status": "affected",
"version": "083322455c67d278c56a66b73f1221f004ee600a",
"versionType": "git"
},
{
"status": "affected",
"version": "4fa1cbd587ef967812f9d9f6ce46ec1dead7502c",
"versionType": "git"
},
{
"status": "affected",
"version": "4.14.152",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.82",
"lessThan": "4.20",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.3.9",
"lessThan": "5.4",
"versionType": "semver"
}
],
"programFiles": [
"drivers/block/nbd.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.156",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.112",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.53",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.17.3",
"versionType": "semver",
"lessThanOrEqual": "6.17.*"
},
{
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/block/nbd.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-40080
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27083 · Revision 1
- Added to Heist Feed
- Publisher date