CVE-2026-32283
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Go standard library | crypto/tls | 0 < 1.25.9 | affected |
| Go standard library | crypto/tls | 1.26.0-0 < 1.26.2 | affected |
Weaknesses
- CWE-667: Improper Locking
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages
Additional References
- https://access.redhat.com/security/cve/CVE-2026-32283
- https://bugzilla.redhat.com/show_bug.cgi?id=2456338
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32283.json
- https://access.redhat.com/errata/RHSA-2026:24762
- https://access.redhat.com/errata/RHSA-2026:16101
- https://access.redhat.com/errata/RHSA-2026:24761
- https://access.redhat.com/errata/RHSA-2026:27076
- https://access.redhat.com/errata/RHSA-2026:14391
- https://access.redhat.com/errata/RHSA-2026:28047
- https://access.redhat.com/errata/RHSA-2026:34365
- https://access.redhat.com/errata/RHSA-2026:20569
- https://access.redhat.com/errata/RHSA-2026:23103
- https://access.redhat.com/errata/RHSA-2026:19715
- https://access.redhat.com/errata/RHSA-2026:16024
- https://access.redhat.com/errata/RHSA-2026:19550
- https://access.redhat.com/errata/RHSA-2026:18032
- https://access.redhat.com/errata/RHSA-2026:18027
- https://access.redhat.com/errata/RHSA-2026:17084
- https://access.redhat.com/errata/RHSA-2026:19719
- https://access.redhat.com/errata/RHSA-2026:19750
- https://access.redhat.com/errata/RHSA-2026:20570
- https://access.redhat.com/errata/RHSA-2026:22713
- https://access.redhat.com/errata/RHSA-2026:19714
- https://access.redhat.com/errata/RHSA-2026:20571
- https://access.redhat.com/errata/RHSA-2026:19450
- https://access.redhat.com/errata/RHSA-2026:10217
- https://access.redhat.com/errata/RHSA-2026:11712
- https://access.redhat.com/errata/RHSA-2026:11881
- https://access.redhat.com/errata/RHSA-2026:11863
- https://access.redhat.com/errata/RHSA-2026:17075
- https://access.redhat.com/errata/RHSA-2026:29195
- https://access.redhat.com/errata/RHSA-2026:23102
- https://access.redhat.com/errata/RHSA-2026:19133
- https://access.redhat.com/errata/RHSA-2026:19139
- https://access.redhat.com/errata/RHSA-2026:19137
- https://access.redhat.com/errata/RHSA-2026:19134
- https://access.redhat.com/errata/RHSA-2026:19136
- https://access.redhat.com/errata/RHSA-2026:22937
- https://access.redhat.com/errata/RHSA-2026:19144
- https://access.redhat.com/errata/RHSA-2026:19135
- https://access.redhat.com/errata/RHSA-2026:22450
- https://access.redhat.com/errata/RHSA-2026:24470
- https://access.redhat.com/errata/RHSA-2026:19156
- https://access.redhat.com/errata/RHSA-2026:19132
- https://access.redhat.com/errata/RHSA-2026:29035
- https://access.redhat.com/errata/RHSA-2026:19126
- https://access.redhat.com/errata/RHSA-2026:33722
- https://access.redhat.com/errata/RHSA-2026:10704
- https://access.redhat.com/errata/RHSA-2026:16875
- https://access.redhat.com/errata/RHSA-2026:11507
- https://access.redhat.com/errata/RHSA-2026:11514
- https://access.redhat.com/errata/RHSA-2026:15980
- https://access.redhat.com/errata/RHSA-2026:19634
- https://access.redhat.com/errata/RHSA-2026:16102
- https://access.redhat.com/errata/RHSA-2026:34192
- https://access.redhat.com/errata/RHSA-2026:34196
- https://access.redhat.com/errata/RHSA-2026:34197
- https://access.redhat.com/errata/RHSA-2026:19721
- https://access.redhat.com/errata/RHSA-2026:20607
- https://access.redhat.com/errata/RHSA-2026:20608
- https://access.redhat.com/errata/RHSA-2026:19722
- https://access.redhat.com/errata/RHSA-2026:16021
- https://access.redhat.com/errata/RHSA-2026:20556
- https://access.redhat.com/errata/RHSA-2026:19839
- https://access.redhat.com/errata/RHSA-2026:28038
- https://access.redhat.com/errata/RHSA-2026:19720
- https://access.redhat.com/errata/RHSA-2026:22709
- https://access.redhat.com/errata/RHSA-2026:17287
- https://access.redhat.com/errata/RHSA-2026:24337
- https://access.redhat.com/errata/RHSA-2026:20609
- https://access.redhat.com/errata/RHSA-2026:14200
- https://access.redhat.com/errata/RHSA-2026:10219
- https://access.redhat.com/errata/RHSA-2026:11711
- https://access.redhat.com/errata/RHSA-2026:11704
- https://access.redhat.com/errata/RHSA-2026:29455
- https://access.redhat.com/errata/RHSA-2026:29703
- https://access.redhat.com/errata/RHSA-2026:19350
- https://access.redhat.com/errata/RHSA-2026:19352
- https://access.redhat.com/errata/RHSA-2026:19351
- https://access.redhat.com/errata/RHSA-2026:23228
- https://access.redhat.com/errata/RHSA-2026:19353
- https://access.redhat.com/errata/RHSA-2026:22714
- https://access.redhat.com/errata/RHSA-2026:26447
- https://access.redhat.com/errata/RHSA-2026:19369
- https://access.redhat.com/errata/RHSA-2026:28074
- https://access.redhat.com/errata/RHSA-2026:26636
- https://access.redhat.com/errata/RHSA-2026:22423
- https://access.redhat.com/errata/RHSA-2026:22347
- https://access.redhat.com/errata/RHSA-2026:21769
- https://access.redhat.com/errata/RHSA-2026:23345
- https://access.redhat.com/errata/RHSA-2026:26571
- https://access.redhat.com/errata/RHSA-2026:7385
- https://access.redhat.com/errata/RHSA-2026:7291
- https://access.redhat.com/errata/RHSA-2026:22485
- https://access.redhat.com/errata/RHSA-2026:14162
References
- https://go.dev/cl/763767
- https://go.dev/issue/78334
- https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
- https://pkg.go.dev/vuln/GO-2026-4870
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