Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package openshell (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-RHEL10-OPENSHELL-20291036
- published30 Sept 2026
- disclosed29 Sept 2026
Introduced: 29 Sep 2026
NewCVE-2026-102822 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openshell package and not the openshell package as distributed by RHEL.
Russh is a Rust SSH client and server library. Prior to 0.63.1, a connection configured to permit mac=none can negotiate it with a MAC-requiring CTR or CBC block cipher because the selection logic validates needs_mac() only when MAC selection fails. A remote peer can then send a packet with a decrypted length of zero, causing russh/src/cipher/mod.rs to shrink the previously read block before indexing buffer.buffer[16..], which panics and terminates the connection task. This issue is fixed in version 0.63.1.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2543499
- https://access.redhat.com/security/cve/CVE-2026-102822
- https://github.com/Eugeny/russh/commit/2885385abfee279092a41d80c6cb6ac367353159
- https://github.com/Eugeny/russh/releases/tag/v0.63.1
- https://github.com/Eugeny/russh/security/advisories/GHSA-p8qx-h547-fjw9