{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-98072", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.074Z", "datePublished": "2026-09-25T10:24:12.675Z", "dateUpdated": "2026-10-19T09:13:21.939Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:13:21.939Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: use wq_has_sleeper() in release_in_xmit()\n\nrelease_in_xmit() clears RDS_IN_XMIT with clear_bit_unlock() and then\nchecks waitqueue_active() to decide whether anyone needs waking.\nclear_bit_unlock() is only a release operation: it orders the\ncritical section before the bit clear, but does not order the\nsubsequent plain load of the wait queue head after it. The waiter\nside does the mirror image - it adds itself to the wait queue and\nthen tests the bit. That is the classic store-buffering pattern: the\nreleasing CPU can read the wait queue as empty while the waiting CPU\nstill reads the bit as set, so the sleeper is never woken.\n\nThe waiters are rds_conn_shutdown() and rds_tcp_reset_callbacks(),\nboth in uninterruptible wait_event() with no timeout. A lost wake-up\nstrands the shutdown worker on its single-threaded workqueue until\nsome other sender releases the bit again - and on a connection that\nis being torn down precisely because it failed, there may never be\nanother sender.\n\nThe barrier used to be there: release_in_xmit() did clear_bit()\nfollowed by smp_mb__after_atomic() until commit 1422f28826d2 (\"rds:\nintroduce acquire/release ordering in acquire/release_in_xmit()\")\nfolded both into clear_bit_unlock(), which strengthened the lock\nhand-off but silently dropped the full barrier the wake-up check\ndepends on. The refill counterpart, release_refill() in\nnet/rds/ib_recv.c, still carries its smp_mb__after_atomic() for\nexactly this reason.\n\nUse wq_has_sleeper(), which is waitqueue_active() preceded by the\nrequired full barrier." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/rds/send.c" ], "versions": [ { "version": "1e1e4316fcaeb9cd6bc56c91127e88625237dd44", "lessThan": "6f552364d97cf4005c7a58f11c9f79e14e269865", "status": "affected", "versionType": "git" }, { "version": "8c378cc522aedd5fa5aa53486b43a4d552fbbd5c", "lessThan": "a94b1dfc82454c5bc068e71c25393af674daf63b", "status": "affected", "versionType": "git" }, { "version": "52287ed416a10bc3d3e204a3186d9509ab3ee634", "lessThan": "5a806ed1eb46850ca4159a18b2a8c4b70f0c1341", "status": "affected", "versionType": "git" }, { "version": "4a4dffdff9ea6201665f5d0a5042011d09bd527f", "lessThan": "3d401934b7edb3ccb07d982dabadd04c45ee307c", "status": "affected", "versionType": "git" }, { "version": "1422f28826d2a0c11e5240b3e951c9e214d8656e", "lessThan": "ed7ee0cd0e136d02f87f13181b1a89880463c7e9", "status": "affected", "versionType": "git" }, { "version": "1422f28826d2a0c11e5240b3e951c9e214d8656e", "lessThan": "a269795107f45adc95975a83324f8fef40bec4ce", "status": "affected", "versionType": "git" }, { "version": "1422f28826d2a0c11e5240b3e951c9e214d8656e", "lessThan": "3764627b30a283e611e652c4a2bb8cdc74a75a99", "status": "affected", "versionType": "git" }, { "version": "1422f28826d2a0c11e5240b3e951c9e214d8656e", "lessThan": "6d0c8b7073913011459cf968cbbadd341e166bc3", "status": "affected", "versionType": "git" }, { "version": "bec6c4ce1169a565c58c347d5d0ac22e46d507d6", "status": "affected", "versionType": "git" }, { "version": "f781fb5177cdfd9a6c98cd94e30275457c6461ac", "status": "affected", "versionType": "git" }, { "version": "917135195200e20e5244b9c3f2bb40f3d5e02510", "status": "affected", "versionType": "git" }, { "version": "d792459a6e2ae21c7f5107babd63e52e4c5ab93a", "status": "affected", "versionType": "git" }, { "version": "5.10.214", "lessThan": "5.10.271", "status": "affected", "versionType": "semver" }, { "version": "5.15.153", "lessThan": "5.15.222", "status": "affected", "versionType": "semver" }, { "version": "6.1.83", "lessThan": "6.1.189", "status": "affected", "versionType": "semver" }, { "version": "6.6.23", "lessThan": "6.6.158", "status": "affected", "versionType": "semver" }, { "version": "4.19.311", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "5.4.273", "lessThan": "5.5", "status": "affected", "versionType": "semver" }, { "version": "6.7.11", "lessThan": "6.8", "status": "affected", "versionType": "semver" }, { "version": "6.8.2", "lessThan": "6.9", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/rds/send.c" ], "versions": [ { "version": "6.9", "status": "affected" }, { "version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.214", "versionEndExcluding": "5.10.271" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.153", "versionEndExcluding": "5.15.222" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.83", "versionEndExcluding": "6.1.189" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.23", "versionEndExcluding": "6.6.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.12.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.18.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.2.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.311" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.273" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/6f552364d97cf4005c7a58f11c9f79e14e269865" }, { "url": "https://git.kernel.org/stable/c/a94b1dfc82454c5bc068e71c25393af674daf63b" }, { "url": "https://git.kernel.org/stable/c/5a806ed1eb46850ca4159a18b2a8c4b70f0c1341" }, { "url": "https://git.kernel.org/stable/c/3d401934b7edb3ccb07d982dabadd04c45ee307c" }, { "url": "https://git.kernel.org/stable/c/ed7ee0cd0e136d02f87f13181b1a89880463c7e9" }, { "url": "https://git.kernel.org/stable/c/a269795107f45adc95975a83324f8fef40bec4ce" }, { "url": "https://git.kernel.org/stable/c/3764627b30a283e611e652c4a2bb8cdc74a75a99" }, { "url": "https://git.kernel.org/stable/c/6d0c8b7073913011459cf968cbbadd341e166bc3" } ], "title": "net/rds: use wq_has_sleeper() in release_in_xmit()", "x_generator": { "engine": "bippy-1.2.0" } } } }