7.5

CVE-2026-33811

Crash when handling long CNAME response in net

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Golang ≫ Go Version < 1.25.10
Golang ≫ Go Version >= 1.26.0 < 1.26.3
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.81% 0.524
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA-ADP 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1341 Multiple Releases of Same Resource or Handle

The product attempts to close or release a resource or handle more than once, without any successful open between the close operations.

CWE-415 Double Free

The product calls free() twice on the same memory address.

https://go.dev/issue/78803
Issue Tracking
https://go.dev/cl/767860
Patch
https://bugzilla.redhat.com/show_bug.cgi?id=2467822
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33811.json
https://access.redhat.com/errata/RHSA-2026:33574
https://access.redhat.com/errata/RHSA-2026:34357
https://access.redhat.com/errata/RHSA-2026:34359
https://access.redhat.com/errata/RHSA-2026:34364
https://groups.google.com/g/golang-announce/c/qcCIEXso47M
Third Party Advisory
Mailing List
https://pkg.go.dev/vuln/GO-2026-4981
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:23262
https://access.redhat.com/errata/RHSA-2026:23264
https://access.redhat.com/errata/RHSA-2026:33120
https://access.redhat.com/errata/RHSA-2026:33123
https://access.redhat.com/errata/RHSA-2026:33142
https://access.redhat.com/errata/RHSA-2026:33150
https://access.redhat.com/errata/RHSA-2026:35832
https://access.redhat.com/errata/RHSA-2026:35993
https://access.redhat.com/errata/RHSA-2026:35994
https://access.redhat.com/errata/RHSA-2026:35995
https://access.redhat.com/security/cve/CVE-2026-33811
https://access.redhat.com/errata/RHSA-2026:36319
https://access.redhat.com/errata/RHSA-2026:36207
https://access.redhat.com/errata/RHSA-2026:36625
https://access.redhat.com/errata/RHSA-2026:36648
https://access.redhat.com/errata/RHSA-2026:36617
https://access.redhat.com/errata/RHSA-2026:36651
https://access.redhat.com/errata/RHSA-2026:36796
https://access.redhat.com/errata/RHSA-2026:36797
https://access.redhat.com/errata/RHSA-2026:36776
https://access.redhat.com/errata/RHSA-2026:38504
https://access.redhat.com/errata/RHSA-2026:39266
https://access.redhat.com/errata/RHSA-2026:39272
https://access.redhat.com/errata/RHSA-2026:39319
https://access.redhat.com/errata/RHSA-2026:39810
https://access.redhat.com/errata/RHSA-2026:39573
https://access.redhat.com/errata/RHSA-2026:40118
https://access.redhat.com/errata/RHSA-2026:40945
https://access.redhat.com/errata/RHSA-2026:41019
https://access.redhat.com/errata/RHSA-2026:41030
https://access.redhat.com/errata/RHSA-2026:41055
https://access.redhat.com/errata/RHSA-2026:42078
https://access.redhat.com/errata/RHSA-2026:42079
https://access.redhat.com/errata/RHSA-2026:42082
https://access.redhat.com/errata/RHSA-2026:42132
https://access.redhat.com/errata/RHSA-2026:42150
https://access.redhat.com/errata/RHSA-2026:42151
https://access.redhat.com/errata/RHSA-2026:42240
https://access.redhat.com/errata/RHSA-2026:41928
https://access.redhat.com/errata/RHSA-2026:42644
https://access.redhat.com/errata/RHSA-2026:42049
https://access.redhat.com/errata/RHSA-2026:42051
https://access.redhat.com/errata/RHSA-2026:42043
https://access.redhat.com/errata/RHSA-2026:42047
https://access.redhat.com/errata/RHSA-2026:42050
https://access.redhat.com/errata/RHSA-2026:42048
https://access.redhat.com/errata/RHSA-2026:42852
https://access.redhat.com/errata/RHSA-2026:43038
https://access.redhat.com/errata/RHSA-2026:42946
https://access.redhat.com/errata/RHSA-2026:43692
https://access.redhat.com/errata/RHSA-2026:44622
https://access.redhat.com/errata/RHSA-2026:46885
https://access.redhat.com/errata/RHSA-2026:47735
https://access.redhat.com/errata/RHSA-2026:47149
https://access.redhat.com/errata/RHSA-2026:47952
https://access.redhat.com/errata/RHSA-2026:48151
https://access.redhat.com/errata/RHSA-2026:49703
https://access.redhat.com/errata/RHSA-2026:50319
https://access.redhat.com/errata/RHSA-2026:50336
https://access.redhat.com/errata/RHSA-2026:50205
https://access.redhat.com/errata/RHSA-2026:50300
https://access.redhat.com/errata/RHSA-2026:51033
https://access.redhat.com/errata/RHSA-2026:50843
https://access.redhat.com/errata/RHSA-2026:51057
https://access.redhat.com/errata/RHSA-2026:51187
https://access.redhat.com/errata/RHSA-2026:51194
https://access.redhat.com/errata/RHSA-2026:51341
https://access.redhat.com/errata/RHSA-2026:54191
https://access.redhat.com/errata/RHSA-2026:53412
https://access.redhat.com/errata/RHSA-2026:53413
https://access.redhat.com/errata/RHSA-2026:53415
https://access.redhat.com/errata/RHSA-2026:53530
https://access.redhat.com/errata/RHSA-2026:54168
https://access.redhat.com/errata/RHSA-2026:54283
https://access.redhat.com/errata/RHSA-2026:54285
https://access.redhat.com/errata/RHSA-2026:54287
https://access.redhat.com/errata/RHSA-2026:54274
https://access.redhat.com/errata/RHSA-2026:54286
https://access.redhat.com/errata/RHSA-2026:54435
https://access.redhat.com/errata/RHSA-2026:54284
https://access.redhat.com/errata/RHSA-2026:54441
https://access.redhat.com/errata/RHSA-2026:54500
https://access.redhat.com/errata/RHSA-2026:54757
https://access.redhat.com/errata/RHSA-2026:54602
https://access.redhat.com/errata/RHSA-2026:56340
https://access.redhat.com/errata/RHSA-2026:54603
https://access.redhat.com/errata/RHSA-2026:57191
https://access.redhat.com/errata/RHSA-2026:54552
https://access.redhat.com/errata/RHSA-2026:54556
https://access.redhat.com/errata/RHSA-2026:54584
https://access.redhat.com/errata/RHSA-2026:57194
https://access.redhat.com/errata/RHSA-2026:56789
https://access.redhat.com/errata/RHSA-2026:22112
https://access.redhat.com/errata/RHSA-2026:22120
https://access.redhat.com/errata/RHSA-2026:22121
https://access.redhat.com/errata/RHSA-2026:49702
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https://access.redhat.com/errata/RHSA-2026:56790
https://access.redhat.com/errata/RHSA-2026:57649
https://access.redhat.com/errata/RHSA-2026:59467
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https://access.redhat.com/errata/RHSA-2026:56912
https://access.redhat.com/errata/RHSA-2026:56785
https://access.redhat.com/errata/RHSA-2026:56852
https://access.redhat.com/errata/RHSA-2026:56910
https://access.redhat.com/errata/RHSA-2026:57482
https://access.redhat.com/errata/RHSA-2026:56855
https://access.redhat.com/errata/RHSA-2026:56913
https://access.redhat.com/errata/RHSA-2026:57488
https://access.redhat.com/errata/RHSA-2026:60302
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https://access.redhat.com/errata/RHSA-2026:61253
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https://access.redhat.com/errata/RHSA-2026:65126
https://access.redhat.com/errata/RHSA-2026:65534
https://access.redhat.com/errata/RHSA-2026:65886
https://access.redhat.com/errata/RHSA-2026:66022
https://access.redhat.com/errata/RHSA-2026:67149
https://access.redhat.com/errata/RHSA-2026:67319
https://access.redhat.com/errata/RHSA-2026:67287