RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs-srv: Fix integer underflow in process_read and process_write usr_len is read from a network-supplied message field (le16_to_cpu) and used to compute data_len = off - usr_len without validating that usr_len <= off. A malicious RDMA client can send usr_len > off causing an integer underflow, resulting in data_len wrapping to a huge size_t value which is then passed to the rdma_ev callback as a memory length, leading to out-of-bounds memory access. Fix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids() in both process_read() and process_write(), ensuring the early return path acquires no reference and has no resource leak.
CVE-2026-97413
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-2026-97413
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": "9cb837480424e78ed585376f944088246685aec3",
"lessThan": "6b1e26e70d7ca9f0906af2283558a530eeb1f066",
"versionType": "git"
},
{
"status": "affected",
"version": "9cb837480424e78ed585376f944088246685aec3",
"lessThan": "2c52b2afded988233cd4ccc185cf5147bbc77a76",
"versionType": "git"
},
{
"status": "affected",
"version": "9cb837480424e78ed585376f944088246685aec3",
"lessThan": "b042b4947752df0b3d16e683ac09fb4f7f0e33e0",
"versionType": "git"
},
{
"status": "affected",
"version": "9cb837480424e78ed585376f944088246685aec3",
"lessThan": "24ad03bfeda05fca04c56677e57fd3d6bc3e9978",
"versionType": "git"
},
{
"status": "affected",
"version": "9cb837480424e78ed585376f944088246685aec3",
"lessThan": "c76e9123ab91a903396d26e6ab1b5caae5c6b149",
"versionType": "git"
},
{
"status": "affected",
"version": "9cb837480424e78ed585376f944088246685aec3",
"lessThan": "54bf38b27afc08a0eb6b732f9c14eb8a4bcb66b5",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/ulp/rtrs/rtrs-srv.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.8",
"versionType": "semver"
},
{
"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": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/ulp/rtrs/rtrs-srv.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97413
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #8305 · Revision 1
- Added to Heist Feed
- Publisher date