Race Condition Affecting openshift/ose-rhel-coreos-9 package, versions *
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-RHEL8-OPENSHIFTOSERHELCOREOS9-22343987
- published8 Nov 2026
- disclosed28 Oct 2026
Introduced: 28 Oct 2026
NewCVE-2026-99181 (opens in a new tab)How to fix?
There is no fixed version for RHEL:8 openshift/ose-rhel-coreos-9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openshift/ose-rhel-coreos-9 package and not the openshift/ose-rhel-coreos-9 package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
autofs: ignore notification errors from a replaced pipe
autofs_notify_daemon() takes a reference to the current notification pipe under wq_mutex, then drops the mutex before writing the request. The write can block while the daemon enters catatonic mode and installs a replacement pipe.
If the old pipe's reader is then closed, the delayed write returns -EPIPE and the generic error path enters catatonic mode again. That transition acts on the current superblock state, closes the replacement pipe, and releases the new daemon generation's wait queues.
Only enter catatonic mode when the pipe which failed is still the current pipe. Factor the already-locked transition so the identity check and state change are atomic with respect to another replacement.
This was reproduced on v7.3-rc5-337-gff47652a4b66c in a local QEMU guest. An unprivileged UID 65534 lookup filled the old packet pipe before a normal CATATONIC/SETPIPEFD restart. On the unmodified kernel, the new pipe received HUP and both a pending victim lookup and a later lookup failed with ENOENT in two out of two fresh-mount runs.
With this change, the new pipe remained active, received an intact 304-byte request, and both victim lookups completed in two out of two runs. Normal lookup and restart-without-a-blocked-writer controls passed. No KASAN, oops, refcount, or lock diagnostic was observed. A source reproducer and complete local logs are available privately on request.
The demonstrated impact is limited to denial of a shared autofs service during a legitimate daemon restart. No memory corruption, information leak, privilege escalation, or code execution primitive was observed.
References
- https://access.redhat.com/security/cve/CVE-2026-99181
- https://git.kernel.org/stable/c/1a177064f501ed4b67873a43aae5d5bdb18b3704
- https://git.kernel.org/stable/c/65676cd4203c0e41a94caf54080a7f0a95434bda
- https://git.kernel.org/stable/c/fb296391f685d82dbb93621a970fb234cea45280
- https://git.kernel.org/stable/c/35c2c4f3cf1403b058237c44000199a6c9a59273
- https://git.kernel.org/stable/c/6d2b8ad36e09e07993addd4ce92b578d3b13c8f8
- https://git.kernel.org/stable/c/8c8386ffc582155451f074f25759f665e626a850
- https://git.kernel.org/stable/c/95ba5de229c1875e836f10646c4e6c454d560060
- https://git.kernel.org/stable/c/d3477ebdce74dc3bae404048258e70d7046c208a