{"api_version":"1","generated_at":"2026-09-25T22:31:38+00:00","cve":"CVE-2026-98072","urls":{"html":"https://cve.report/CVE-2026-98072","api":"https://cve.report/api/cve/CVE-2026-98072.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98072","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98072"},"summary":{"title":"net/rds: use wq_has_sleeper() in release_in_xmit()","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:36","updated_at":"2026-09-25 11:17:36"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3764627b30a283e611e652c4a2bb8cdc74a75a99","name":"https://git.kernel.org/stable/c/3764627b30a283e611e652c4a2bb8cdc74a75a99","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6d0c8b7073913011459cf968cbbadd341e166bc3","name":"https://git.kernel.org/stable/c/6d0c8b7073913011459cf968cbbadd341e166bc3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a269795107f45adc95975a83324f8fef40bec4ce","name":"https://git.kernel.org/stable/c/a269795107f45adc95975a83324f8fef40bec4ce","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ed7ee0cd0e136d02f87f13181b1a89880463c7e9","name":"https://git.kernel.org/stable/c/ed7ee0cd0e136d02f87f13181b1a89880463c7e9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98072","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98072","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1422f28826d2a0c11e5240b3e951c9e214d8656e ed7ee0cd0e136d02f87f13181b1a89880463c7e9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1422f28826d2a0c11e5240b3e951c9e214d8656e a269795107f45adc95975a83324f8fef40bec4ce git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1422f28826d2a0c11e5240b3e951c9e214d8656e 3764627b30a283e611e652c4a2bb8cdc74a75a99 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1422f28826d2a0c11e5240b3e951c9e214d8656e 6d0c8b7073913011459cf968cbbadd341e166bc3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bec6c4ce1169a565c58c347d5d0ac22e46d507d6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f781fb5177cdfd9a6c98cd94e30275457c6461ac git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1e1e4316fcaeb9cd6bc56c91127e88625237dd44 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8c378cc522aedd5fa5aa53486b43a4d552fbbd5c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 52287ed416a10bc3d3e204a3186d9509ab3ee634 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4a4dffdff9ea6201665f5d0a5042011d09bd527f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 917135195200e20e5244b9c3f2bb40f3d5e02510 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d792459a6e2ae21c7f5107babd63e52e4c5ab93a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.19.311 4.20 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.4.273 5.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10.214 5.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15.153 5.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1.83 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.23 6.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.7.11 6.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.8.2 6.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.9","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/rds/send.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ed7ee0cd0e136d02f87f13181b1a89880463c7e9","status":"affected","version":"1422f28826d2a0c11e5240b3e951c9e214d8656e","versionType":"git"},{"lessThan":"a269795107f45adc95975a83324f8fef40bec4ce","status":"affected","version":"1422f28826d2a0c11e5240b3e951c9e214d8656e","versionType":"git"},{"lessThan":"3764627b30a283e611e652c4a2bb8cdc74a75a99","status":"affected","version":"1422f28826d2a0c11e5240b3e951c9e214d8656e","versionType":"git"},{"lessThan":"6d0c8b7073913011459cf968cbbadd341e166bc3","status":"affected","version":"1422f28826d2a0c11e5240b3e951c9e214d8656e","versionType":"git"},{"status":"affected","version":"bec6c4ce1169a565c58c347d5d0ac22e46d507d6","versionType":"git"},{"status":"affected","version":"f781fb5177cdfd9a6c98cd94e30275457c6461ac","versionType":"git"},{"status":"affected","version":"1e1e4316fcaeb9cd6bc56c91127e88625237dd44","versionType":"git"},{"status":"affected","version":"8c378cc522aedd5fa5aa53486b43a4d552fbbd5c","versionType":"git"},{"status":"affected","version":"52287ed416a10bc3d3e204a3186d9509ab3ee634","versionType":"git"},{"status":"affected","version":"4a4dffdff9ea6201665f5d0a5042011d09bd527f","versionType":"git"},{"status":"affected","version":"917135195200e20e5244b9c3f2bb40f3d5e02510","versionType":"git"},{"status":"affected","version":"d792459a6e2ae21c7f5107babd63e52e4c5ab93a","versionType":"git"},{"lessThan":"4.20","status":"affected","version":"4.19.311","versionType":"semver"},{"lessThan":"5.5","status":"affected","version":"5.4.273","versionType":"semver"},{"lessThan":"5.11","status":"affected","version":"5.10.214","versionType":"semver"},{"lessThan":"5.16","status":"affected","version":"5.15.153","versionType":"semver"},{"lessThan":"6.2","status":"affected","version":"6.1.83","versionType":"semver"},{"lessThan":"6.7","status":"affected","version":"6.6.23","versionType":"semver"},{"lessThan":"6.8","status":"affected","version":"6.7.11","versionType":"semver"},{"lessThan":"6.9","status":"affected","version":"6.8.2","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/rds/send.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.9"},{"lessThan":"6.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc2","versionStartIncluding":"6.9","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":"5.10.214","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.153","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.83","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.23","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","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:24:12.675Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98072","datePublished":"2026-09-25T10:24:12.675Z","dateReserved":"2026-09-25T10:19:56.074Z","dateUpdated":"2026-09-25T10:24:12.675Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:36","lastModifiedDate":"2026-09-25 11:17:36","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98072","Ordinal":"1","Title":"net/rds: use wq_has_sleeper() in release_in_xmit()","CVE":"CVE-2026-98072","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98072","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"net/rds: use wq_has_sleeper() in release_in_xmit()"}]}}}