# CVE-2024-49994

## Summary

- **CVE ID:** CVE-2024-49994
- **Severity:** MEDIUM
- **CVSS Score:** 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** N/A
- **Published:** Oct 21, 2024
- **Last Modified:** Sep 8, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:

block: fix integer overflow in BLKSECDISCARD

I independently rediscovered

	commit 22d24a544b0d49bbcbd61c8c0eaf77d3c9297155
	block: fix overflow in blk_ioctl_discard()

but for secure erase.

Same problem:

	uint64_t r[2] = {512, 18446744073709551104ULL};
	ioctl(fd, BLKSECDISCARD, r);

will enter near infinite loop inside blkdev_issue_secure_erase():

	a.out: attempt to access beyond end of device
	loop0: rw=5, sector=3399043073, nr_sectors = 1024 limit=2048
	bio_check_eod: 3286214 callbacks suppressed

## Affected Products

- Linux — Linux (44abff2c0b970ae3d310b97617525dc01f248d7c)
- Linux — Linux (5.19)
- Linux — Linux (0)
- Linux — Linux (6.1.128)
- Linux — Linux (6.6.75)
- Linux — Linux (6.10.14)
- Linux — Linux (6.11.3)
- Linux — Linux (6.12)

## References

- [CNA](https://git.kernel.org/stable/c/8476f8428e8b48fd7a0e4258fa2a96a8f4468239)
- [CNA](https://git.kernel.org/stable/c/a99bacb35c1416355eef957560e8fcac3a665549)
- [CNA](https://git.kernel.org/stable/c/0842ddd83939eb4db940b9af7d39e79722bc41aa)
- [CNA](https://git.kernel.org/stable/c/6c9915fa9410cbb9bd75ee283c03120046c56d3d)
- [CNA](https://git.kernel.org/stable/c/697ba0b6ec4ae04afb67d3911799b5e2043b4455)
- [CVE](https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html)
- [siemens-SADP](https://cert-portal.siemens.com/productcert/html/ssa-019113.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 15.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._