Vulnerability · Published Aug 13, 2026 · Assigned by redhat
CVE-2026-73584Sblim-sfcb: sblim-sfcb: privileged file corruption and denial of service via insecure temporary file handling
Medium 6.3
In plain English
A medium-severity security flaw in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | sblim-sfcb | no fix listed | UBUNTU-CVE-2026-73584 |
| Ubuntu:24.04:LTS | sblim-sfcb | no fix listed | UBUNTU-CVE-2026-73584 |
| Ubuntu:26.04:LTS | sblim-sfcb | no fix listed | UBUNTU-CVE-2026-73584 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-377 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
References
- https://access.redhat.com/security/cve/CVE-2026-73584 vdb-entry, x_refsource_REDHAT
- RHBZ#2462721 issue-tracking, x_refsource_REDHAT