Medium 5.5Published Oct 21, 2024

CVE-2024-49994block: fix integer overflow in BLKSECDISCARD

Updated under an hour ago (Oct 27, 2026, 8:10 PM ET)

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It affects Linux and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 44abff2c0b970ae3d310b97617525dc01f248d7c before 8476f8428e8b48fd7a0e4258fa2a96a8f4468239; from 44abff2c0b970ae3d310b97617525dc01f248d7c before a99bacb35c1416355eef957560e8fcac3a665549; from 44abff2c0b970ae3d310b97617525dc01f248d7c before 0842ddd83939eb4db940b9af7d39e79722bc41aa; 44abff2c0b970ae3d310b97617525dc01f248d7c builds before 6c9915fa9410cbb9bd75ee283c03120046c56d3d; from 44abff2c0b970ae3d310b97617525dc01f248d7c before 697ba0b6ec4ae04afb67d3911799b5e2043b4455	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
linux linux_kernel linux:linux_kernel	before 6.10.14; from 6.11 before 6.11.3	NVD

References

References

https://git.kernel.org/stable/c/8476f8428e8b48fd7a0e4258fa2a96a8f4468239
https://git.kernel.org/stable/c/a99bacb35c1416355eef957560e8fcac3a665549
https://git.kernel.org/stable/c/0842ddd83939eb4db940b9af7d39e79722bc41aa	patch
https://git.kernel.org/stable/c/6c9915fa9410cbb9bd75ee283c03120046c56d3d	patch
https://git.kernel.org/stable/c/697ba0b6ec4ae04afb67d3911799b5e2043b4455	patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-457936.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.