# CVE-2026-98070: net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks() CVE-2026-98070 is fixed in 58 products on 1 platform, first by DEBIAN-CVE-2026-98070, released September 29, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-98070 - Priority: High - CVSS: 8.1 (Important) - EPSS: 0.0047 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 25, 2026 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98070 ## Description In the Linux kernel, the following vulnerability has been resolved: net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks() rds_tcp_reset_callbacks() quiesces the transmit path by setting the path state to RDS_CONN_RESETTING and then waiting for RDS_IN_XMIT to be sampled clear before swapping the underlying socket and calling rds_send_path_reset(). Sampling the bit clear is not the same as owning it: rds_send_xmit() can re-acquire RDS_IN_XMIT right after the wait_event() returns. Its state recheck after taking the lock is a store-buffering pattern (the resetter writes the state and reads the bit, the sender writes the bit and reads the state) and acquire_in_xmit() is only an acquire operation, so on weakly ordered architectures both sides can miss each other's write and the transmit path then runs concurrently with rds_send_path_reset() rewriting cp_xmit_* state - which is exactly what the comment above rds_send_path_reset() tells its callers to prevent. Take the lock instead, hold it across the socket swap and rds_send_path_reset(), and release it with a wake-up at the end. The lock-ordering constraint documented above the wait still holds: the lock is acquired before lock_sock(), so a sender inside tcp_sendmsg() can never be waited on while we hold the socket lock. Two details of the old code go away with the same change: - t_sock is now read only after the lock is acquired. The old code cached it before waiting; the teardown in rds_conn_shutdown() releases that socket and clears t_sock, so a pointer cached before the wait can be stale by the time the accept path resumes. Reading it under RDS_IN_XMIT is what makes the exclusion complete once the teardown owns the same lock, which the next patch arranges; until then the teardown still only samples the bit, and the two paths remain as exposed to each other as they are today. - The old !osock early path called rds_send_path_reset() with no serialization at all. It now runs under the lock like the normal path. The conditional RDS_CONN_RESETTING transition of the previous patch happens before the socket check either way: a path found without a socket is either still connecting (its reconnect worker blocked on t_conn_path_lock) and legitimately goes RESETTING -> UP on the new socket, or it has been torn down meanwhile and is dropped. The in-function comment describing the old wait-based quiesce is rewritten to describe the lock-based one, and the stale block comment above the function (which still described a return value and an incomplete list of t_sock writers) is refreshed to name all four writers - the connect, accept, teardown and swap paths - and what serializes each of them. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | bpftool-debuginfo amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | bpftool6.12 amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | bpftool6.12-debuginfo amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | bpftool6.18 amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | bpftool6.18-debuginfo amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-debuginfo amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-devel amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-headers amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-livepatch-6.1.189-236.399 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-livepatch-6.12.111-136.204 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel-livepatch-6.18.54-121.166 amzn 2023 | 1:1.0-0.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel-modules-extra amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-modules-extra-common amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-tools amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-tools-debuginfo amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel-tools-devel amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | kernel6.12 amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-debuginfo amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-debuginfo-common-aarch64 amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-debuginfo-common-x86_64 amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-devel amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-headers amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-modules-extra amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-modules-extra-common amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-tools amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-tools-debuginfo amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.12-tools-devel amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | kernel6.18 amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-debuginfo amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-debuginfo-common-aarch64 amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-debuginfo-common-x86_64 amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-devel amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-headers amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-modules-extra amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-modules-extra-common amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-tools amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-tools-debuginfo amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | kernel6.18-tools-devel amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | linux Debian 12.15 (bookworm) | 6.1.190-1 | [DEBIAN-CVE-2026-98070](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98070.md) | Sep 29, 2026 | | Linux | linux Debian 13.5 (trixie) | 6.12.111-1 | [DEBIAN-CVE-2026-98070](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98070.md) | Sep 29, 2026 | | Linux | linux Debian 14 | 7.2.7-1 | [DEBIAN-CVE-2026-98070](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98070.md) | Sep 29, 2026 | | Linux | linux-6.12 Debian 12.15 (bookworm) | 6.12.111-1~deb12u1 | [DEBIAN-CVE-2026-98070](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98070.md) | Sep 29, 2026 | | Linux | microvm-kernel amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | microvm-kernel6.18 amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | perf amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | perf-debuginfo amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | perf6.12 amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | perf6.12-debuginfo amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | perf6.18 amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | perf6.18-debuginfo amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | python3-perf amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | python3-perf-debuginfo amzn 2023 | 1:6.1.189-236.399.amzn2023 | [ALAS2023-2026-3336](https://patchblox.com/security/data/fix/linux/alas2023-2026-3336.md) | Nov 7, 2026 | | Linux | python3-perf6.12 amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | python3-perf6.12-debuginfo amzn 2023 | 1:6.12.111-136.204.amzn2023 | [ALAS2023-2026-3193](https://patchblox.com/security/data/fix/linux/alas2023-2026-3193.md) | Nov 7, 2026 | | Linux | python3-perf6.18 amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | | Linux | python3-perf6.18-debuginfo amzn 2023 | 1:6.18.54-121.166.amzn2023 | [ALAS2023-2026-3192](https://patchblox.com/security/data/fix/linux/alas2023-2026-3192.md) | Nov 7, 2026 | --- Data as of 2026-11-09T01:18:40Z UTC. 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