{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-98070", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98070", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-09-25T10:24:11.481Z", "updatedAt": "2026-10-19T09:13:19.953Z", "importedAt": "2026-10-24T01:58:41.756Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()\n\nrds_tcp_reset_callbacks() quiesces the transmit path by setting the\npath state to RDS_CONN_RESETTING and then waiting for RDS_IN_XMIT to\nbe sampled clear before swapping the underlying socket and calling\nrds_send_path_reset().\n\nSampling the bit clear is not the same as owning it: rds_send_xmit()\ncan re-acquire RDS_IN_XMIT right after the wait_event() returns. Its\nstate recheck after taking the lock is a store-buffering pattern (the\nresetter writes the state and reads the bit, the sender writes the\nbit and reads the state) and acquire_in_xmit() is only an acquire\noperation, so on weakly ordered architectures both sides can miss\neach other's write and the transmit path then runs concurrently with\nrds_send_path_reset() rewriting cp_xmit_* state - which is exactly\nwhat the comment above rds_send_path_reset() tells its callers to\nprevent.\n\nTake the lock instead, hold it across the socket swap and\nrds_send_path_reset(), and release it with a wake-up at the end. The\nlock-ordering constraint documented above the wait still holds: the\nlock is acquired before lock_sock(), so a sender inside tcp_sendmsg()\ncan never be waited on while we hold the socket lock.\n\nTwo details of the old code go away with the same change:\n\n - t_sock is now read only after the lock is acquired. The old code\n cached it before waiting; the teardown in rds_conn_shutdown()\n releases that socket and clears t_sock, so a pointer cached before\n the wait can be stale by the time the accept path resumes. Reading\n it under RDS_IN_XMIT is what makes the exclusion complete once the\n teardown owns the same lock, which the next patch arranges; until\n then the teardown still only samples the bit, and the two paths\n remain as exposed to each other as they are today.\n\n - The old !osock early path called rds_send_path_reset() with no\n serialization at all. It now runs under the lock like the normal\n path. The conditional RDS_CONN_RESETTING transition of the\n previous patch happens before the socket check either way: a path\n found without a socket is either still connecting (its reconnect\n worker blocked on t_conn_path_lock) and legitimately goes\n RESETTING -> UP on the new socket, or it has been torn down\n meanwhile and is dropped.\n\nThe in-function comment describing the old wait-based quiesce is\nrewritten to describe the lock-based one, and the stale block comment\nabove the function (which still described a return value and an\nincomplete list of t_sock writers) is refreshed to name all four\nwriters - the connect, accept, teardown and swap paths - and what\nserializes each of them.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "335b48d980f631fbc5b233cbb3625ac0c86d67cb", "status": "affected", "versionType": "git", "lessThan": "670af4e4a4de5e6bb5daee3838485571a0caa5fa" }, { "version": "335b48d980f631fbc5b233cbb3625ac0c86d67cb", "status": "affected", "versionType": "git", "lessThan": "830a2e21b200c6b6fdccc63dd3f23932bf7a894b" }, { "version": "335b48d980f631fbc5b233cbb3625ac0c86d67cb", "status": "affected", "versionType": "git", "lessThan": "a05790cb4ff03f797d76906990b148d83f63e7a3" }, { "version": "335b48d980f631fbc5b233cbb3625ac0c86d67cb", "status": "affected", "versionType": "git", "lessThan": "d184e6dd4b8f3c20c018595fd09795a66b46c8ef" }, { "version": "335b48d980f631fbc5b233cbb3625ac0c86d67cb", "status": "affected", "versionType": "git", "lessThan": "d625112564c3e980e02504270222b49b82690cee" }, { "version": "335b48d980f631fbc5b233cbb3625ac0c86d67cb", "status": "affected", "versionType": "git", "lessThan": "8e4c3b7844c906c7097b4cfedd9dd1f48c9a6a92" }, { "version": "335b48d980f631fbc5b233cbb3625ac0c86d67cb", "status": "affected", "versionType": "git", "lessThan": "062d9e008c67289e8e1b221ecdd8f9d60566d012" }, { "version": "335b48d980f631fbc5b233cbb3625ac0c86d67cb", "status": "affected", "versionType": "git", "lessThan": "02c5f9dc2efd823e061954d564ce00bacd1bebeb" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.7", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.7" }, { "version": "5.10.271", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.222", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.189", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.158", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.111", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.53", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.2.7", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.2.*" }, { "version": "7.3", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }