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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

To mitigate this issue, if instance migration is not required, run the `sfcbrepos` command with the `-i` option to disable the vulnerable migration path. For example: `sudo sfcbrepos -f -i`. Alternatively, avoid running `sfcbrepos` with elevated privileges on systems where untrusted local users can concurrently write to the `/tmp` directory. A service restart or reload may be required for changes to take effect if `sfcbrepos` is managed by a service.

History

Fri, 14 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 14 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 13 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
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.
Title Sblim-sfcb: sblim-sfcb: privileged file corruption and denial of service via insecure temporary file handling
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-377
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-13T14:34:33.655Z

Reserved: 2026-08-13T11:01:55.535Z

Link: CVE-2026-73584

cve-icon Vulnrichment

Updated: 2026-08-13T12:59:11.583Z

cve-icon NVD

Status : Received

Published: 2026-08-13T13:19:18.673

Modified: 2026-08-13T15:20:18.373

Link: CVE-2026-73584

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-13T11:50:45Z

Links: CVE-2026-73584 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-14T12:15:47Z

Weaknesses