rxrpc: only handle RESPONSE during service challenge
In the Linux kernel, the following vulnerability has been resolved: rxrpc: only handle RESPONSE during service challenge Only process RESPONSE packets while the service connection is still in RXRPC_CONN_SERVICE_CHALLENGING. Check that state under state_lock before running response verification and security initialization, then use a local secured flag to decide whether to queue the secured-connection work after the state transition. This keeps duplicate or late RESPONSE packets from re-running the setup path and removes the unlocked post-transition state test.
CVE-2026-31676
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-2026-31676
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": "17926a79320afa9b95df6b977b40cca6d8713cea",
"lessThan": "a1a8efde03a40b6c658d580e96644d9b9a2a0d3a",
"versionType": "git"
},
{
"status": "affected",
"version": "17926a79320afa9b95df6b977b40cca6d8713cea",
"lessThan": "6c3a0fbdafef8316e34ae22333e317a341e737cd",
"versionType": "git"
},
{
"status": "affected",
"version": "17926a79320afa9b95df6b977b40cca6d8713cea",
"lessThan": "0afdfd4941c1b60a1f5c361760daa970edca60cd",
"versionType": "git"
},
{
"status": "affected",
"version": "17926a79320afa9b95df6b977b40cca6d8713cea",
"lessThan": "a6bcf8010af093fe04f7100562e9542ab7882585",
"versionType": "git"
},
{
"status": "affected",
"version": "17926a79320afa9b95df6b977b40cca6d8713cea",
"lessThan": "29b44d904dceb832be880def08b8cb17a0aba91c",
"versionType": "git"
},
{
"status": "affected",
"version": "17926a79320afa9b95df6b977b40cca6d8713cea",
"lessThan": "d0035e634dae83237ab7f5681eb52b2f65d0ceb8",
"versionType": "git"
},
{
"status": "affected",
"version": "17926a79320afa9b95df6b977b40cca6d8713cea",
"lessThan": "03fd2ef73cb4ffd0af100a95b634af54f474414e",
"versionType": "git"
},
{
"status": "affected",
"version": "17926a79320afa9b95df6b977b40cca6d8713cea",
"lessThan": "c43ffdcfdbb5567b1f143556df8a04b4eeea041c",
"versionType": "git"
}
],
"programFiles": [
"net/rxrpc/conn_event.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.22"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.22",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.258",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.209",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.136",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.84",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.23",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.13",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/rxrpc/conn_event.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-31676
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39950 · Revision 1
- Added to Heist Feed
- Publisher date