Local service hang via secure-erase integer overflow
Published Oct 21, 2024 · Updated Sep 8, 2026
Integer overflow in the Linux kernel block ioctl handler and Siemens MFP GNU/Linux subsystem allows local users to hang the system. The BLKSECDISCARD path accepts an offset-plus-length range whose 64-bit sum wraps, then passes the invalid range to blkdev_issue_secure_erase, which loops over sectors beyond the device end. Reaching the flaw requires local low-privileged access and a block-device file; triggering it can monopolize the secure-erase path in a near-infinite loop.
Summary
What happened
Integer overflow in the Linux kernel block ioctl handler and Siemens MFP GNU/Linux subsystem allows local users to hang the system. The BLKSECDISCARD path accepts an offset-plus-length range whose 64-bit sum wraps, then passes the invalid range to blkdev_issue_secure_erase, which loops over sectors beyond the device end. Reaching the flaw requires local low-privileged access and a block-device file; triggering it can monopolize the secure-erase path in a near-infinite loop.
The record
- CVE
- CVE-2024-49994
- Published
- Oct 21, 2024
- Updated
- Sep 8, 2026
- Vendor
- Siemens
- Product
- SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
- Classifications
- CWE-190, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 21, 2024CVE publishedPublication date reported by the CVE source.
- Sep 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=V3.1.6 <*
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- BLKSECDISCARD near-infinite-loop reproducerproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo