Openssh Security Update — AlmaLinux 8 (ALSA-2026:47755)
This is a security release for AlmaLinux 8. The fix ships in the current release line (referenced builds: 10.3-7). Update the product on every affected server to the patched release — there is no workaround, and unpatched servers remain exposed until updated.
Fix-Befehle
EL8+ (AlmaLinux/CloudLinux/Rocky)
sudo dnf updateWas das unter einer SharedLicense-Lizenz bedeutet
Your SharedLicense license itself is not affected — this is a change in AlmaLinux 8 software, not in licensing. Update the product through its standard update channel. Licenses keep working through updates; nothing needs re-issuing or re-activating.
OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server.
Security Fix(es):
* openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenSSH clien…
Type:
security
Severity:
moderate
Release date:
2026-07-30
Description:
OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server.
Security Fix(es):
* openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenSSH client versions (CVE-2026-55655)
* openssh: Double free in AlmaLinux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service (CVE-2026-55653)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References:
Updated packages listed below:
| Architecture | Package | Checksum |
| aarch64 | openssh-server-8.0p1-30.el8_10.aarch64.rpm | 10c176986ce3d78b1bcc9b514b9fad76a1ec85ac6c4f3362c048ff069c38985d |
| aarch64 | openssh-keycat-8.0p1-30.el8_10.aarch64.rpm | 689f9e59b5c119a13726c9664c40882386d81cc3f53be5b420e4f658fd294709 |
| aarch64 | openssh-cavs-8.0p1-30.el8_10.aarch64.rpm | a95a4f60610f9527565320ec8729e1fb5003ac7093a316ad6f41e207867b9a9f |
| aarch64 | openssh-clients-8.0p1-30.el8_10.aarch64.rpm | c03542969f555bf88bbd01565f627ef7c0b7f1287a4b02aa6b8d9eb6d71625d3 |
| aarch64 | openssh-ldap-8.0p1-30.el8_10.aarch64.rpm | cfe3f392cc8bb3f7ce7bef2b035a8e7e828e03e8b464a29d11a42b44eef6df97 |
| aarch64 | pam_ssh_agent_auth-0.10.3-7.30.el8_10.aarch64.rpm | d833e2c0b526cfc50aa7fddddb9ac8854af65245d7228519447cb91b3cc9e530 |
| aarch64 | openssh-8.0p1-30.el8_10.aarch64.rpm | f2b71a52aabe73b674afbece4e753034e84d73ae4f5d25d1ee01c7775e43313c |
| aarch64 | openssh-askpass-8.0p1-30.el8_10.aarch64.rpm | ffcbe7770474c4001aa25476d850e6143611b4dbf58954fc89e86278a8c86602 |
| ppc64le | pam_ssh_agent_auth-0.10.3-7.30.el8_10.ppc64le.rpm | 004039539482728dd8a48cff74cb8c120c63e8bd07bf67027fd0a0ffb40a614f |
| ppc64le | openssh-8.0p1-30.el8_10.ppc64le.rpm | 069331708020b19431fc97096afb951e2e2937f46ee58da7b4add5e0e3f8c503 |
| ppc64le | openssh-ldap-8.0p1-30.el8_10.ppc64le.rpm | 0c8716703b5b68ad047aec86b38d0c3fbec01e7eb2a79232e04bc37c3a09fa80 |
| ppc64le | openssh-server-8.0p1-30.el8_10.ppc64le.rpm | 772f11e3d88cd5319924cbfb38d3a7073110ba593978dc3e6fe9ff91aa29cf9a |
| ppc64le | openssh-askpass-8.0p1-30.el8_10.ppc64le.rpm | 79add9d11ffd823668b4169e537d7e7cac0b840fd1b9d4189319f3e234e2e3f5 |
| ppc64le | openssh-keycat-8.0p1-30.el8_10.ppc64le.rpm | b1a170a4678c5a9815e5bc5350796db5027ed91b52a9807e9ec39a680cd10a76 |
| ppc64le | openssh-cavs-8.0p1-30.el8_10.ppc64le.rpm | ee7d25cfe519d2ff34bcdd9f691db96873ae5967f53fb29741b53cd7f4522992 |
| ppc64le | openssh-clients-8.0p1-30.el8_10.ppc64le.rpm | fa1133a6d9c9c54907249a1788b992ce049f324ffc6237585739bb9db3bf9960 |
| s390x | openssh-askpass-8.0p1-30.el8_10.s390x.rpm | 078ce3b9942fa9fe1868a553be6241b54f6bf685a2f465b53fdb2fee83a1ec70 |
| s390x | openssh-cavs-8.0p1-30.el8_10.s390x.rpm | 5b90fcad38c5017f5604d920a13d414438eea23c9c17d1a679b0435ea681cce7 |
| s390x | openssh-keycat-8.0p1-30.el8_10.s390x.rpm | 5fac9f606f8ca67a05c757cfc34d1e319dd8e99c7f80440861bc5aa4474e886b |
| s390x | openssh-server-8.0p1-30.el8_10.s390x.rpm | 66b5ab11cb1b9dc57fff770004e6ae9e522ddc419d1a9bb876d9cb5c2b6b1a93 |
| s390x | openssh-clients-8.0p1-30.el8_10.s390x.rpm | 8077d998b7a40a979e4bb4f2a80dcad03f48259b90cd8dd9ae4f0b43f22b8b83 |
| s390x | openssh-ldap-8.0p1-30.el8_10.s390x.rpm | b2a5e3d1dea80c16fa2bbcb14dd7d08a0b2a32b9ed6e22fb43e2c5420b4ff1c0 |
| s390x | pam_ssh_agent_auth-0.10.3-7.30.el8_10.s390x.rpm | d37a443f4f4ba11ec52585b735fc199e41470378d40a33585737a4a14d1245f3 |
| s390x | openssh-8.0p1-30.el8_10.s390x.rpm | e588b9d1c367501b3f5501f33912ffcdf40d18e3b1869ab33ccbcdd9bbcfe4e7 |
| x86_64 | openssh-8.0p1-30.el8_10.x86_64.rpm | 1ebb59bfd9e4758bbd6542cceafc89cee6b7485c98a935390b82da571939fad8 |
| x86_64 | openssh-askpass-8.0p1-30.el8_10.x86_64.rpm | 32511ae0ccfee60a50138afbea0272e5f6b4ed40d58000752c4388663aa2fd74 |
| x86_64 | openssh-cavs-8.0p1-30.el8_10.x86_64.rpm | 6b562e94f177db130156d9c014c0d8882bf8a8ff5694c01d6756894c22f7ca4c |
| x86_64 | openssh-keycat-8.0p1-30.el8_10.x86_64.rpm | 92ecfbcefa89931f38c852fca16fee85afb8e1d94694cb4b054cd68567638076 |
| x86_64 | pam_ssh_agent_auth-0.10.3-7.30.el8_10.x86_64.rpm | b5cc4748f8dac8924310980bffdba5ee436b6a4db2344c476e5e85da07b4af05 |
| x86_64 | openssh-server-8.0p1-30.el8_10.x86_64.rpm | b7d9a2b26c00433fdfa83da45645d16de8b3be4807e895c3380494668d77d8fa |
| x86_64 | openssh-clients-8.0p1-30.el8_10.x86_64.rpm | b8f69fcf1df5755dd76369632c4178ad5438a6ac699a7d76caa9d44107155b77 |
| x86_64 | openssh-ldap-8.0p1-30.el8_10.x86_64.rpm | d33b43931346b10a54fb391ddf2eea87c4a37aef1a722892b77bfd07664b62cb |
Notes:
This page is generated automatically from Red Hat security data and has not been checked for errors. For clarification or corrections please contact the AlmaLinux Packaging Team.
Referenzen
Sicherheitshinweise
Verwandte Warnhinweise
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