net/smc: fix UAF on lgr list traversal in smcr_port_err()
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix UAF on lgr list traversal in smcr_port_err() smcr_port_err() traverses smc_lgr_list.list without holding smc_lgr_list.lock, allowing a concurrent smc_lgr_terminate_sched() to free an lgr while it is still being dereferenced. Hold smc_lgr_list.lock across the traversal. Update smc_ib_gid_check() to call smcr_port_err() after releasing the lock.
CVE-2026-98559
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-2026-98559
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": "541afa10c126b6c22c2a805a559c70cc41fd156e",
"lessThan": "34bcf11cd2528ae00bb6d764d808083c66824277",
"versionType": "git"
},
{
"status": "affected",
"version": "541afa10c126b6c22c2a805a559c70cc41fd156e",
"lessThan": "0edcc4284392b28826b5d37532b366b291e6e0fa",
"versionType": "git"
},
{
"status": "affected",
"version": "541afa10c126b6c22c2a805a559c70cc41fd156e",
"lessThan": "00a59600ae72d24859d0ad1783a78bc921bc2599",
"versionType": "git"
},
{
"status": "affected",
"version": "541afa10c126b6c22c2a805a559c70cc41fd156e",
"lessThan": "3d35f069e1c119992000d51236dbe54da2d4e61e",
"versionType": "git"
},
{
"status": "affected",
"version": "541afa10c126b6c22c2a805a559c70cc41fd156e",
"lessThan": "3d65a2eb4449fc9658fb860dea893025d028d90e",
"versionType": "git"
},
{
"status": "affected",
"version": "541afa10c126b6c22c2a805a559c70cc41fd156e",
"lessThan": "a9b968e42690d784c241a0761c10253271f7df5d",
"versionType": "git"
},
{
"status": "affected",
"version": "541afa10c126b6c22c2a805a559c70cc41fd156e",
"lessThan": "61cb282fe97b3b0ba32ca09417a693162bf4ae3f",
"versionType": "git"
}
],
"programFiles": [
"net/smc/smc_core.c",
"net/smc/smc_ib.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": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.55",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/smc/smc_core.c",
"net/smc/smc_ib.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98559
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38581 · Revision 1
- Added to Heist Feed
- Publisher date