A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.
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Fixes
Solution
No solution given by the vendor.
Workaround
Manually verify the channel is not closed inside your channel data callbacks.
References
History
Tue, 21 Jul 2026 15:30:00 +0000
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ssvc
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Tue, 21 Jul 2026 14:45:00 +0000
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| Description | A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions. | |
| Title | Libssh: libssh: use-after-free via data callbacks on closed channels | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird |
|
| Weaknesses | CWE-416 | |
| CPEs | cpe:/a:redhat:hummingbird:1 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-07-21T15:36:11.018Z
Reserved: 2026-07-07T15:40:24.561Z
Link: CVE-2026-59850
Updated: 2026-07-21T14:47:57.287Z
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OpenCVE Enrichment
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Weaknesses