Intel

AIKIDO-2026-11024

golang.org/x/crypto is vulnerable to Denial Of Service (DoS)

Denial Of Service (DoS)CVE-2026-39829 Published Jun 2, 2026

75

High Risk

This Affects:

GOgolang.org/x/crypto
0.0.0 - 0.51.0
Fixed in 0.52.0
Are you affected? Scan for Free

TL;DR

The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range and if you use the golang.org/x/crypto/ssh functionalities.

Background info

golang.org/x/crypto is vulnerable to Denial Of Service (DoS) in versions 0.0.0 - 0.51.0.

How to fix this

Upgrade the golang.org/x/crypto library to the patch version.

Links

pkg.go.dev/vuln/GO-2026-5018
https://pkg.go.dev/vuln/GO-2026-5018
go.dev/cl/781641
https://go.dev/cl/781641
go.dev/cl/781661
https://go.dev/cl/781661
go.dev/issue/79565
https://go.dev/issue/79565
groups.google.com/g/golang-announce/c/a082jnz-LvI
https://groups.google.com/g/golang-announce/c/a082jnz-LvI
access.redhat.com/errata/RHSA-2026:26546
https://access.redhat.com/errata/RHSA-2026:26546
access.redhat.com/errata/RHSA-2026:26547
https://access.redhat.com/errata/RHSA-2026:26547
access.redhat.com/errata/RHSA-2026:29455
https://access.redhat.com/errata/RHSA-2026:29455
access.redhat.com/errata/RHSA-2026:35833
https://access.redhat.com/errata/RHSA-2026:35833
access.redhat.com/errata/RHSA-2026:36199
https://access.redhat.com/errata/RHSA-2026:36199
access.redhat.com/errata/RHSA-2026:36207
https://access.redhat.com/errata/RHSA-2026:36207
access.redhat.com/errata/RHSA-2026:36319
https://access.redhat.com/errata/RHSA-2026:36319
access.redhat.com/errata/RHSA-2026:36625
https://access.redhat.com/errata/RHSA-2026:36625
access.redhat.com/errata/RHSA-2026:36648
https://access.redhat.com/errata/RHSA-2026:36648
access.redhat.com/errata/RHSA-2026:36651
https://access.redhat.com/errata/RHSA-2026:36651
access.redhat.com/errata/RHSA-2026:36796
https://access.redhat.com/errata/RHSA-2026:36796
access.redhat.com/errata/RHSA-2026:36797
https://access.redhat.com/errata/RHSA-2026:36797
access.redhat.com/errata/RHSA-2026:36808
https://access.redhat.com/errata/RHSA-2026:36808
access.redhat.com/errata/RHSA-2026:36820
https://access.redhat.com/errata/RHSA-2026:36820
access.redhat.com/errata/RHSA-2026:36883
https://access.redhat.com/errata/RHSA-2026:36883
access.redhat.com/errata/RHSA-2026:37072
https://access.redhat.com/errata/RHSA-2026:37072
access.redhat.com/errata/RHSA-2026:37123
https://access.redhat.com/errata/RHSA-2026:37123
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https://access.redhat.com/errata/RHSA-2026:37268
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https://access.redhat.com/errata/RHSA-2026:37271
access.redhat.com/errata/RHSA-2026:37272
https://access.redhat.com/errata/RHSA-2026:37272
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https://access.redhat.com/errata/RHSA-2026:37278
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https://access.redhat.com/errata/RHSA-2026:37286
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https://access.redhat.com/errata/RHSA-2026:37296
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https://access.redhat.com/errata/RHSA-2026:37387
access.redhat.com/errata/RHSA-2026:40118
https://access.redhat.com/errata/RHSA-2026:40118
access.redhat.com/errata/RHSA-2026:40262
https://access.redhat.com/errata/RHSA-2026:40262
access.redhat.com/errata/RHSA-2026:40945
https://access.redhat.com/errata/RHSA-2026:40945
access.redhat.com/errata/RHSA-2026:40969
https://access.redhat.com/errata/RHSA-2026:40969
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https://access.redhat.com/errata/RHSA-2026:40972
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https://access.redhat.com/errata/RHSA-2026:40974
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https://access.redhat.com/errata/RHSA-2026:41019
access.redhat.com/errata/RHSA-2026:41031
https://access.redhat.com/errata/RHSA-2026:41031
access.redhat.com/errata/RHSA-2026:41036
https://access.redhat.com/errata/RHSA-2026:41036
access.redhat.com/errata/RHSA-2026:41055
https://access.redhat.com/errata/RHSA-2026:41055
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https://access.redhat.com/errata/RHSA-2026:41066
access.redhat.com/errata/RHSA-2026:42146
https://access.redhat.com/errata/RHSA-2026:42146
access.redhat.com/errata/RHSA-2026:42796
https://access.redhat.com/errata/RHSA-2026:42796
access.redhat.com/errata/RHSA-2026:43052
https://access.redhat.com/errata/RHSA-2026:43052
access.redhat.com/errata/RHSA-2026:43692
https://access.redhat.com/errata/RHSA-2026:43692
access.redhat.com/errata/RHSA-2026:46885
https://access.redhat.com/errata/RHSA-2026:46885
access.redhat.com/errata/RHSA-2026:46903
https://access.redhat.com/errata/RHSA-2026:46903
access.redhat.com/errata/RHSA-2026:47735
https://access.redhat.com/errata/RHSA-2026:47735
access.redhat.com/errata/RHSA-2026:47949
https://access.redhat.com/errata/RHSA-2026:47949
access.redhat.com/errata/RHSA-2026:48151
https://access.redhat.com/errata/RHSA-2026:48151
access.redhat.com/errata/RHSA-2026:48693
https://access.redhat.com/errata/RHSA-2026:48693
access.redhat.com/errata/RHSA-2026:49944
https://access.redhat.com/errata/RHSA-2026:49944
access.redhat.com/errata/RHSA-2026:51033
https://access.redhat.com/errata/RHSA-2026:51033
access.redhat.com/errata/RHSA-2026:52857
https://access.redhat.com/errata/RHSA-2026:52857
access.redhat.com/errata/RHSA-2026:52910
https://access.redhat.com/errata/RHSA-2026:52910
access.redhat.com/errata/RHSA-2026:54400
https://access.redhat.com/errata/RHSA-2026:54400
access.redhat.com/errata/RHSA-2026:54432
https://access.redhat.com/errata/RHSA-2026:54432
access.redhat.com/errata/RHSA-2026:57191
https://access.redhat.com/errata/RHSA-2026:57191
access.redhat.com/errata/RHSA-2026:57194
https://access.redhat.com/errata/RHSA-2026:57194
access.redhat.com/errata/RHSA-2026:57365
https://access.redhat.com/errata/RHSA-2026:57365
access.redhat.com/errata/RHSA-2026:57801
https://access.redhat.com/errata/RHSA-2026:57801
access.redhat.com/errata/RHSA-2026:59467
https://access.redhat.com/errata/RHSA-2026:59467
access.redhat.com/errata/RHSA-2026:59559
https://access.redhat.com/errata/RHSA-2026:59559
access.redhat.com/errata/RHSA-2026:59593
https://access.redhat.com/errata/RHSA-2026:59593
access.redhat.com/errata/RHSA-2026:60520
https://access.redhat.com/errata/RHSA-2026:60520
access.redhat.com/errata/RHSA-2026:61314
https://access.redhat.com/errata/RHSA-2026:61314
access.redhat.com/security/cve/CVE-2026-39829
https://access.redhat.com/security/cve/CVE-2026-39829
bugzilla.redhat.com/show_bug.cgi?id=2480681
https://bugzilla.redhat.com/show_bug.cgi?id=2480681
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39829.json
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39829.json