RDMA/siw: Bound fragmented header copies by the remaining length
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Bound fragmented header copies by the remaining length siw_get_hdr() can receive an extended DDP/RDMAP header across more than one TCP callback. The first callback may receive most of the header, while the next one still limits the copy to hdrlen - MIN_DDP_HDR instead of the number of missing bytes. This makes the destination move past the end of the header and overwrite the receive state, including fpdu_part_rcvd. A later callback can then use a negative fpdu_part_rcvd value as a copy offset, which creates an OOB write. Use the number of header bytes already received when calculating the next copy length.
CVE-2026-98323
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-2026-98323
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": "e3917c85f41ef1df64e27dc0e46ab0d803c5e73e",
"lessThan": "2c6fbcf4bfac0b2b186acc8d91154c0fa24468a7",
"versionType": "git"
},
{
"status": "affected",
"version": "308cd50f174c95a507527037f4de1a0396aa4325",
"lessThan": "af9f5b474a260ad23ffb9793d716a5e3bbce3b48",
"versionType": "git"
},
{
"status": "affected",
"version": "754209850df8367c954ac1de7671c7430b1f342c",
"lessThan": "262dcd809723723ed8a4e05437ec7e9c21a8f17e",
"versionType": "git"
},
{
"status": "affected",
"version": "754209850df8367c954ac1de7671c7430b1f342c",
"lessThan": "eb4d7a946970469b3ab0c762432bf161d5b0836c",
"versionType": "git"
},
{
"status": "affected",
"version": "754209850df8367c954ac1de7671c7430b1f342c",
"lessThan": "8628f8ebf41669302513fb3f0bf0eba38b226742",
"versionType": "git"
},
{
"status": "affected",
"version": "754209850df8367c954ac1de7671c7430b1f342c",
"lessThan": "b72dcfb9bf1f0f0147cda03dc59e4002a315067f",
"versionType": "git"
},
{
"status": "affected",
"version": "754209850df8367c954ac1de7671c7430b1f342c",
"lessThan": "e6bdfdf3bcb02d0d626a45e8c98b7e63d2fddf9d",
"versionType": "git"
},
{
"status": "affected",
"version": "754209850df8367c954ac1de7671c7430b1f342c",
"lessThan": "9ff797e516dbc1ecb73701ec4c24055712d44411",
"versionType": "git"
},
{
"status": "affected",
"version": "e09caa38e10bcf027100cc22b0e3cc745a39ef0a",
"versionType": "git"
},
{
"status": "affected",
"version": "0c14f795a9eab9344230f9933798b8ee496f497d",
"versionType": "git"
},
{
"status": "affected",
"version": "7fada7c6962219b6fc4ff4e62e46a936af110dd9",
"versionType": "git"
},
{
"status": "affected",
"version": "5.10.150",
"lessThan": "5.10.271",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.75",
"lessThan": "5.15.222",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.220",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.19.17",
"lessThan": "5.20",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.0.3",
"lessThan": "6.1",
"versionType": "semver"
}
],
"programFiles": [
"drivers/infiniband/sw/siw/siw_qp_rx.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.1"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/sw/siw/siw_qp_rx.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98323
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #38402 · Revision 1
- Added to Heist Feed
- Publisher date