vsock/virtio: fix potential unbounded skb queue
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix potential unbounded skb queue virtio_transport_inc_rx_pkt() checks vvs->rx_bytes + len > vvs->buf_alloc. virtio_transport_recv_enqueue() skips coalescing for packets with VIRTIO_VSOCK_SEQ_EOM. If fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM, a very large number of packets can be queued because vvs->rx_bytes stays at 0. Fix this by estimating the skb metadata size: (Number of skbs in the queue) * SKB_TRUESIZE(0)
CVE-2026-53132
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-2026-53132
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": "077706165717686a2a6a71405fef036cd5b37ae0",
"lessThan": "1eca304f97a34ed5e921e1f0e06c8b241f25bf12",
"versionType": "git"
},
{
"status": "affected",
"version": "077706165717686a2a6a71405fef036cd5b37ae0",
"lessThan": "9bdc637fde66b63d6cad0caacd034888bb7bf5f5",
"versionType": "git"
},
{
"status": "affected",
"version": "077706165717686a2a6a71405fef036cd5b37ae0",
"lessThan": "100d5b2ffdc6468b9e48532641f29e83efdcb63c",
"versionType": "git"
},
{
"status": "affected",
"version": "077706165717686a2a6a71405fef036cd5b37ae0",
"lessThan": "059b7dbd20a6f0c539a45ddff1573cb8946685b5",
"versionType": "git"
},
{
"status": "affected",
"version": "5852a2b573f7a3a29df46296e56aa3491e589cdf",
"versionType": "git"
},
{
"status": "affected",
"version": "6.1.63",
"lessThan": "6.2",
"versionType": "semver"
}
],
"programFiles": [
"net/vmw_vsock/virtio_transport_common.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.94",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.36",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.13",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/vmw_vsock/virtio_transport_common.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53132
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40756 · Revision 1
- Added to Heist Feed
- Publisher date