Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package rhcos (opens in a new tab)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.
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Test your applications- Snyk IDSNYK-RHEL8-RHCOS-18755657
- published13 Aug 2026
- disclosed12 Aug 2026
Introduced: 12 Aug 2026
CVE-2026-68433 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rhcos package and not the rhcos package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
libceph: bound get_version reply decode to front len
handle_get_version_reply() uses msg->front_alloc_len as the decode boundary for MON_GET_VERSION_REPLY. That is the size of the reused reply buffer, not the number of bytes actually received.
A truncated reply can therefore pass ceph_decode_need() and decode the second u64 from stale tail bytes left in the buffer by an earlier message, causing an uninitialized memory read.
Use msg->front.iov_len as the receive-side decode boundary, matching other libceph reply handlers and limiting decoding to the bytes that were actually read from the wire.
References
- https://access.redhat.com/security/cve/CVE-2026-68433
- https://git.kernel.org/stable/c/0d934c934ec746d53fc7e4f53239792647bbae63
- https://git.kernel.org/stable/c/340e0386aa39da181015bee38f309018c335ce16
- https://git.kernel.org/stable/c/4e7ebfaa0d14cf50e44041bfde38070d6dbc019f
- https://git.kernel.org/stable/c/d3c32939fa0e3ee9b883b9a0fd1972c5c444e3d0
- https://git.kernel.org/stable/c/d60de8253c85a02d0e6194b0735e7a562981a04c
- https://git.kernel.org/stable/c/1307028f082756bf453e1889aee9983d30643a4b
- https://git.kernel.org/stable/c/72a35070fcefa229b1b031aa7482ad3788e18f07
- https://git.kernel.org/stable/c/f6cbf6878f3a1503c872ba8f1e69a58ee68d8b2e