vdpa_sim_net: check TX pull result before RX copy
In the Linux kernel, the following vulnerability has been resolved: vdpa_sim_net: check TX pull result before RX copy vringh_iov_pull_iotlb() returns a signed byte count. A failed TX pull is currently added to the unsigned byte counter and then passed as a size_t length to receive_filter() and vringh_iov_push_iotlb(). A negative error can therefore become a large length in the RX path. Handle non-positive pull results before every length use. Count the TX error and complete the consumed TX descriptor with zero bytes. I found this bug myself, though the patch was written with AI assistance.
CVE-2026-97990
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-2026-97990
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": "cfe226892913a448e83e7a19db93862baa3cb99c",
"lessThan": "1b803d382cde6d85755b363f22010208a04ba40a",
"versionType": "git"
},
{
"status": "affected",
"version": "cfe226892913a448e83e7a19db93862baa3cb99c",
"lessThan": "c001abcde865b74231da8f1412c3217dbf66781e",
"versionType": "git"
},
{
"status": "affected",
"version": "cfe226892913a448e83e7a19db93862baa3cb99c",
"lessThan": "3af20238a09ca180d66623e3bed16b64e9975f39",
"versionType": "git"
},
{
"status": "affected",
"version": "cfe226892913a448e83e7a19db93862baa3cb99c",
"lessThan": "2bbf1c1f69991e28787e02b0a2f826289d5fc730",
"versionType": "git"
},
{
"status": "affected",
"version": "cfe226892913a448e83e7a19db93862baa3cb99c",
"lessThan": "0d195797a80b77f2ec56718cd26d3ee65d0093e8",
"versionType": "git"
}
],
"programFiles": [
"drivers/vdpa/vdpa_sim/vdpa_sim_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": "5.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.19",
"versionType": "semver"
},
{
"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": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/vdpa/vdpa_sim/vdpa_sim_net.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97990
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #38121 · Revision 1
- Added to Heist Feed
- Publisher date