IB/mad: Drop unmatched RMPP responses before reassembly
In the Linux kernel, the following vulnerability has been resolved: IB/mad: Drop unmatched RMPP responses before reassembly Kernel-handled RMPP receive processing starts reassembly for active DATA responses before the response is matched to an outstanding send. The normal match happens later, after ib_process_rmpp_recv_wc() has either assembled a complete message or consumed the segment. That ordering lets an unsolicited response that routes to a kernel RMPP agent by the high TID bits allocate or extend RMPP receive state before the full TID and source address are checked against a real request. A reordered burst can therefore reach the receive-side insertion path even though the response would not match any send. For kernel-handled RMPP DATA responses, require the existing ib_find_send_mad() match before entering RMPP reassembly. The matcher already checks the full TID, management class and source address/GID against the agent wait, backlog and in-flight send lists. If there is no match, drop the response without creating RMPP state. This leaves the RMPP window behavior unchanged and only rejects responses that have no corresponding request.
CVE-2026-68425
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-2026-68425
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": "fa619a77046bef30478697aba0553991033afb8e",
"lessThan": "45416c87ebcece1e90f3bc5bc172d106b77c6b69",
"versionType": "git"
},
{
"status": "affected",
"version": "fa619a77046bef30478697aba0553991033afb8e",
"lessThan": "9634fb1f4d404f36a20ffbcb8797369db69b06bb",
"versionType": "git"
},
{
"status": "affected",
"version": "fa619a77046bef30478697aba0553991033afb8e",
"lessThan": "bfb9e8243fd2099d1080d09222964d988f991d9b",
"versionType": "git"
},
{
"status": "affected",
"version": "fa619a77046bef30478697aba0553991033afb8e",
"lessThan": "dfa535c94406c03d3f0c869ef3ba5528e395737c",
"versionType": "git"
},
{
"status": "affected",
"version": "fa619a77046bef30478697aba0553991033afb8e",
"lessThan": "6e1bd7f590b0ccfee07f7fe1d48b92059bd37d72",
"versionType": "git"
},
{
"status": "affected",
"version": "fa619a77046bef30478697aba0553991033afb8e",
"lessThan": "98d2d468b4faa1fdc68c0c6c238389906ee3490c",
"versionType": "git"
},
{
"status": "affected",
"version": "fa619a77046bef30478697aba0553991033afb8e",
"lessThan": "ad9c9ad3204f63a46f0f7de29687a8e512f05e29",
"versionType": "git"
},
{
"status": "affected",
"version": "fa619a77046bef30478697aba0553991033afb8e",
"lessThan": "d2e52d610b9b09694261632340b801a421e0b0c5",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/core/mad.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/core/mad.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68425
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41722 · Revision 1
- Added to Heist Feed
- Publisher date