CVE-2024-9355: github.com/golang-fips/openssl · Use of Uninitialized Variable
Affects github.com/golang-fips/opensslSource GCVE Database
Not known to be exploited · CVSS 6.5 Medium.
Data as of 27 Oct 2026, 07:29 UTC
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:LExploitation evidence
Disclosed: evidence found.
CVE published 1 Oct 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Gogithub.com/golang-fips/opensslpkg:golang/github.com/golang-fips/opensslOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Red Hat has released security updates addressing CVE-2024-9355 in their go-toolset and rhc-worker-script packages for Red Hat Enterprise Linux 7 Extended Lifecycle Support and Red Hat Enterprise Linux 8. Users should apply these official updates as detailed in the Red Hat advisories (RHSA-2024:10133 and RHSA-2024:7502) to remediate the vulnerability. Patch status is confirmed with these updates. No additional mitigation steps are indicated beyond applying the vendor-provided patches.
Description
CVE-2024-9355 is a vulnerability in the Golang FIPS OpenSSL library where an uninitialized buffer length variable can be returned as zero in FIPS mode. This flaw may cause false positive matches between non-equal HMAC sums and can result in derived keys being all zeros instead of unpredictable values, potentially impacting the Go TLS stack.
References
- access.redhat.com/errata/RHSA-2024:10133 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:7502 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:7550 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:8327 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:8678 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:8847 (opens in a new tab)
- access.redhat.com/errata/RHSA-2024:9551 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:2416 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:7118 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:7256 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:7624 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:55520 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:55525 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:59439 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:66016 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:68504 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:69235 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:90725 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2024-9355 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2315719 (opens in a new tab)
- github.com/golang-fips/openssl/pull/198 (opens in a new tab)