net/rds: use wq_has_sleeper() in release_in_xmit()
In the Linux kernel, the following vulnerability has been resolved: net/rds: use wq_has_sleeper() in release_in_xmit() release_in_xmit() clears RDS_IN_XMIT with clear_bit_unlock() and then checks waitqueue_active() to decide whether anyone needs waking. clear_bit_unlock() is only a release operation: it orders the critical section before the bit clear, but does not order the subsequent plain load of the wait queue head after it. The waiter side does the mirror image - it adds itself to the wait queue and then tests the bit. That is the classic store-buffering pattern: the releasing CPU can read the wait queue as empty while the waiting CPU still reads the bit as set, so the sleeper is never woken. The waiters are rds_conn_shutdown() and rds_tcp_reset_callbacks(), both in uninterruptible wait_event() with no timeout. A lost wake-up strands the shutdown worker on its single-threaded workqueue until some other sender releases the bit again - and on a connection that is being torn down precisely because it failed, there may never be another sender. The barrier used to be there: release_in_xmit() did clear_bit() followed by smp_mb__after_atomic() until commit 1422f28826d2 ("rds: introduce acquire/release ordering in acquire/release_in_xmit()") folded both into clear_bit_unlock(), which strengthened the lock hand-off but silently dropped the full barrier the wake-up check depends on. The refill counterpart, release_refill() in net/rds/ib_recv.c, still carries its smp_mb__after_atom
CVE-2026-98072
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-2026-98072
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": "1e1e4316fcaeb9cd6bc56c91127e88625237dd44",
"lessThan": "6f552364d97cf4005c7a58f11c9f79e14e269865",
"versionType": "git"
},
{
"status": "affected",
"version": "8c378cc522aedd5fa5aa53486b43a4d552fbbd5c",
"lessThan": "a94b1dfc82454c5bc068e71c25393af674daf63b",
"versionType": "git"
},
{
"status": "affected",
"version": "52287ed416a10bc3d3e204a3186d9509ab3ee634",
"lessThan": "5a806ed1eb46850ca4159a18b2a8c4b70f0c1341",
"versionType": "git"
},
{
"status": "affected",
"version": "4a4dffdff9ea6201665f5d0a5042011d09bd527f",
"lessThan": "3d401934b7edb3ccb07d982dabadd04c45ee307c",
"versionType": "git"
},
{
"status": "affected",
"version": "1422f28826d2a0c11e5240b3e951c9e214d8656e",
"lessThan": "ed7ee0cd0e136d02f87f13181b1a89880463c7e9",
"versionType": "git"
},
{
"status": "affected",
"version": "1422f28826d2a0c11e5240b3e951c9e214d8656e",
"lessThan": "a269795107f45adc95975a83324f8fef40bec4ce",
"versionType": "git"
},
{
"status": "affected",
"version": "1422f28826d2a0c11e5240b3e951c9e214d8656e",
"lessThan": "3764627b30a283e611e652c4a2bb8cdc74a75a99",
"versionType": "git"
},
{
"status": "affected",
"version": "1422f28826d2a0c11e5240b3e951c9e214d8656e",
"lessThan": "6d0c8b7073913011459cf968cbbadd341e166bc3",
"versionType": "git"
},
{
"status": "affected",
"version": "bec6c4ce1169a565c58c347d5d0ac22e46d507d6",
"versionType": "git"
},
{
"status": "affected",
"version": "f781fb5177cdfd9a6c98cd94e30275457c6461ac",
"versionType": "git"
},
{
"status": "affected",
"version": "917135195200e20e5244b9c3f2bb40f3d5e02510",
"versionType": "git"
},
{
"status": "affected",
"version": "d792459a6e2ae21c7f5107babd63e52e4c5ab93a",
"versionType": "git"
},
{
"status": "affected",
"version": "5.10.214",
"lessThan": "5.10.271",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.153",
"lessThan": "5.15.222",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.83",
"lessThan": "6.1.189",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.23",
"lessThan": "6.6.158",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.311",
"lessThan": "4.20",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.273",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.7.11",
"lessThan": "6.8",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.8.2",
"lessThan": "6.9",
"versionType": "semver"
}
],
"programFiles": [
"net/rds/send.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"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": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/rds/send.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98072
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38182 · Revision 1
- Added to Heist Feed
- Publisher date