nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU length or offset exceeds sg_cnt and then use bogus sg->length/offset values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining entries, and sg->length/offset before building the bvec.
CVE-2026-23112
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-2026-23112
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": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
"lessThan": "0b9981751be14b59b4473383c731c833738aebdb",
"versionType": "git"
},
{
"status": "affected",
"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
"lessThan": "42afe8ed8ad2de9c19457156244ef3e1eca94b5d",
"versionType": "git"
},
{
"status": "affected",
"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
"lessThan": "1385be357e8acd09b36e026567f3a9d5c61139de",
"versionType": "git"
},
{
"status": "affected",
"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
"lessThan": "dca1a6ba0da9f472ef040525fab10fd9956db59f",
"versionType": "git"
},
{
"status": "affected",
"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
"lessThan": "19672ae68d52ff75347ebe2420dde1b07adca09f",
"versionType": "git"
},
{
"status": "affected",
"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
"lessThan": "ab200d71553bdcf4de554a5985b05b2dd606bc57",
"versionType": "git"
},
{
"status": "affected",
"version": "872d26a391da92ed8f0c0f5cb5fef428067b7f30",
"lessThan": "52a0a98549344ca20ad81a4176d68d28e3c05a5c",
"versionType": "git"
}
],
"programFiles": [
"drivers/nvme/target/tcp.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.200",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.163",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.124",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.70",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.10",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/nvme/target/tcp.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23112
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #39757 · Revision 1
- Added to Heist Feed
- Publisher date