Libssh: null pointer dereference in libssh kex session id calculation
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| unaffected |
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| Red Hat | Red Hat Enterprise Linux 9 | affected |
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| Red Hat | Red Hat Enterprise Linux 9 | affected |
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| Red Hat | Red Hat Enterprise Linux 10 | affected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 6 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 7 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 8 | affected | — | ||||||
| Red Hat | Red Hat OpenShift Container Platform 4 | affected | — | ||||||
| Red Hat | Red Hat OpenShift Container Platform 4 | affected | — |
No data.
No data available yet.
Vendor Workaround
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4385-1 | libssh security update |
EUVD |
EUVD-2025-22513 | A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash. |
Ubuntu USN |
USN-7849-1 | libssh vulnerability |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.259% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat rhel Els
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| CPEs | cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 |
cpe:/a:redhat:enterprise_linux:10 cpe:/a:redhat:enterprise_linux:8 cpe:/o:redhat:rhel_els:6 cpe:/o:redhat:rhel_els:7 |
| Vendors & Products |
Redhat rhel Els
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | ||
| Vendors & Products |
Redhat rhivos
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat rhivos
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| CPEs | cpe:/o:redhat:rhivos:1 | |
| Vendors & Products |
Redhat rhivos
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
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| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| Title | : null pointer dereference in libssh kex session id calculation | Libssh: null pointer dereference in libssh kex session id calculation |
| References |
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Libssh
Libssh libssh |
|
| CPEs | cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Libssh
Libssh libssh |
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash. | |
| Title | : null pointer dereference in libssh kex session id calculation | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
|
| Weaknesses | CWE-476 | |
| CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
|
| References |
| |
| Metrics |
cvssV3_1
|