rxrpc: Fix integer overflow in rxgk_verify_response()
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix integer overflow in rxgk_verify_response() In rxgk_verify_response(), there's a potential integer overflow due to rounding up token_len before checking it, thereby allowing the length check to be bypassed. Fix this by checking the unrounded value against len too (len is limited as the response must fit in a single UDP packet).
CVE-2026-31633
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-2026-31633
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": "9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a",
"lessThan": "1f864d9daaf622aeaa774404fd51e7d6a435b046",
"versionType": "git"
},
{
"status": "affected",
"version": "9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a",
"lessThan": "c1e242beb6b1efc3c286f617e8d940c8fbf2ed41",
"versionType": "git"
},
{
"status": "affected",
"version": "9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a",
"lessThan": "699e52180f4231c257821c037ed5c99d5eb0edb8",
"versionType": "git"
}
],
"programFiles": [
"net/rxrpc/rxgk.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.16",
"versionType": "semver"
},
{
"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/rxgk.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-31633
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #39932 · Revision 1
- Added to Heist Feed
- Publisher date