CVE-2026-73584
Sblim-sfcb: sblim-sfcb: privileged file corruption and denial of service via insecure temporary file handling
What happened?
A flaw was found in sblim-sfcb. A local, low-privileged attacker can exploit a race condition during privileged instance migration by manipulating a temporary file in the `/tmp` directory. By repeatedly recreating a symbolic link, the attacker can redirect privileged output to an arbitrary file. This can lead to privileged file corruption or a denial of service (DoS) on the system.
Affected software and versions
| Software | Version information | Fixed version |
|---|---|---|
| sblim-sfcbRed Hat | Default status: affected | See vendor advisory |
| sblim-sfcbRed Hat | Default status: unknown | See vendor advisory |
| sblim-sfcbRed Hat | Default status: affected | See vendor advisory |
| sblim-sfcbRed Hat | Default status: affected | See vendor advisory |
| sblim-sfcbRed Hat | Default status: affected | See vendor advisory |
Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.
Is it being exploited?
This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.
How to respond
- Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
- Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
- Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.