High 7.8Published Feb 26, 2025

CVE-2025-21772partitions: mac: fix handling of bogus partition table

Updated under an hour ago (Oct 26, 2026, 1:30 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: partitions: mac: fix handling of bogus partition table Fix several issues in partition probing: - The bailout for a bad partoffset must use put_dev_sector(), since the preceding read_part_sector() succeeded. - If the partition table claims a silly sector size like 0xfff bytes (which results in partition table entries straddling sector boundaries), bail out instead of accessing out-of-bounds memory. - We must not assume that the partition table contains proper NUL termination - use strnlen() and strncmp() instead of strlen() and strcmp().

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 15, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 02e2a5bfebe99edcf9d694575a75032d53fe1b73 before a3e77da9f843e4ab93917d30c314f0283e28c124; from 02e2a5bfebe99edcf9d694575a75032d53fe1b73 before 213ba5bd81b7e97ac6e6190b8f3bc6ba76123625; from 02e2a5bfebe99edcf9d694575a75032d53fe1b73 before 40a35d14f3c0dc72b689061ec72fc9b193f37d1f; from 02e2a5bfebe99edcf9d694575a75032d53fe1b73 before 27a39d006f85e869be68c1d5d2ce05e5d6445bf5; from 02e2a5bfebe99edcf9d694575a75032d53fe1b73 before 92527100be38ede924768f4277450dfe8a40e16b; from 02e2a5bfebe99edcf9d694575a75032d53fe1b73 before 6578717ebca91678131d2b1f4ba4258e60536e9f; from 02e2a5bfebe99edcf9d694575a75032d53fe1b73 before 7fa9706722882f634090bfc9af642bf9ed719e27; from 02e2a5bfebe99edcf9d694575a75032d53fe1b73 before 80e648042e512d5a767da251d44132553fe04ae0; and 10 more ranges	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	before 5.4.291; from 5.5 before 5.10.235; from 5.11 before 5.15.179; from 5.16 before 6.1.129; from 6.2 before 6.6.79; from 6.7 before 6.12.16; from 6.13 before 6.13.4; 6.14; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/a3e77da9f843e4ab93917d30c314f0283e28c124	patch
https://git.kernel.org/stable/c/213ba5bd81b7e97ac6e6190b8f3bc6ba76123625	patch
https://git.kernel.org/stable/c/40a35d14f3c0dc72b689061ec72fc9b193f37d1f	patch
https://git.kernel.org/stable/c/27a39d006f85e869be68c1d5d2ce05e5d6445bf5	patch
https://git.kernel.org/stable/c/92527100be38ede924768f4277450dfe8a40e16b	patch
https://git.kernel.org/stable/c/6578717ebca91678131d2b1f4ba4258e60536e9f	patch
https://git.kernel.org/stable/c/7fa9706722882f634090bfc9af642bf9ed719e27	patch
https://git.kernel.org/stable/c/80e648042e512d5a767da251d44132553fe04ae0	patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
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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.