Medium 5.5Published Feb 23, 2024

CVE-2023-52458block: add check that partition length needs to be aligned with block size

Updated under an hour ago (Oct 27, 2026, 9:50 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: block: add check that partition length needs to be aligned with block size Before calling add partition or resize partition, there is no check on whether the length is aligned with the logical block size. If the logical block size of the disk is larger than 512 bytes, then the partition size maybe not the multiple of the logical block size, and when the last sector is read, bio_truncate() will adjust the bio size, resulting in an IO error if the size of the read command is smaller than the logical block size.If integrity data is supported, this will also result in a null pointer dereference when calling bio_integrity_free.

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)	633395b67bb222f85bb8f825c7751a54b9ec84ee builds before 8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62; 633395b67bb222f85bb8f825c7751a54b9ec84ee builds before 5010c27120962c85d2f421d2cf211791c9603503; from 633395b67bb222f85bb8f825c7751a54b9ec84ee before ef31cc87794731ffcb578a195a2c47d744e25fb8; from 633395b67bb222f85bb8f825c7751a54b9ec84ee before cb16cc1abda18a9514106d2ac8c8d7abc0be5ed8; from 633395b67bb222f85bb8f825c7751a54b9ec84ee before bcdc288e7bc008daf38ef0401b53e4a8bb61bbe5; 633395b67bb222f85bb8f825c7751a54b9ec84ee builds before 6f64f866aa1ae6975c95d805ed51d7e9433a0016	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	before 5.10.215; from 5.11.0 before 5.15.148; from 5.16.0 before 6.1.75; from 6.2.0 before 6.6.14; from 6.7.0 before 6.7.2	NVD

References

References

https://git.kernel.org/stable/c/8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62	patch
https://git.kernel.org/stable/c/5010c27120962c85d2f421d2cf211791c9603503	patch
https://git.kernel.org/stable/c/ef31cc87794731ffcb578a195a2c47d744e25fb8	patch
https://git.kernel.org/stable/c/cb16cc1abda18a9514106d2ac8c8d7abc0be5ed8	patch
https://git.kernel.org/stable/c/bcdc288e7bc008daf38ef0401b53e4a8bb61bbe5	patch
https://git.kernel.org/stable/c/6f64f866aa1ae6975c95d805ed51d7e9433a0016	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
https://cert-portal.siemens.com/productcert/html/ssa-265688.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.