io_uring/net: commit partial buffers on retry
In the Linux kernel, the following vulnerability has been resolved: io_uring/net: commit partial buffers on retry Ring provided buffers are potentially only valid within the single execution context in which they were acquired. io_uring deals with this and invalidates them on retry. But on the networking side, if MSG_WAITALL is set, or if the socket is of the streaming type and too little was processed, then it will hang on to the buffer rather than recycle or commit it. This is problematic for two reasons: 1) If someone unregisters the provided buffer ring before a later retry, then the req->buf_list will no longer be valid. 2) If multiple sockers are using the same buffer group, then multiple receives can consume the same memory. This can cause data corruption in the application, as either receive could land in the same userspace buffer. Fix this by disallowing partial retries from pinning a provided buffer across multiple executions, if ring provided buffers are used.
CVE-2025-38730
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-2025-38730
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": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"lessThan": "3b53dc1c641f2884d4750fc25aaf6c36b90db606",
"versionType": "git"
},
{
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"lessThan": "fe9da1812f8697a38f7e30991d568ec199e16059",
"versionType": "git"
},
{
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"lessThan": "21a4ddb0f5e933f372808c10b9ac704505751bb1",
"versionType": "git"
},
{
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"lessThan": "2eb7937b5fc7fcd90eab7bebb0181214b61b9283",
"versionType": "git"
},
{
"status": "affected",
"version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
"lessThan": "41b70df5b38bc80967d2e0ed55cc3c3896bba781",
"versionType": "git"
}
],
"programFiles": [
"io_uring/net.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.103",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.44",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.11",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16.2",
"versionType": "semver",
"lessThanOrEqual": "6.16.*"
},
{
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"io_uring/net.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-38730
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30613 · Revision 1
- Added to Heist Feed
- Publisher date