Review reviewHigh

CVE-2025-21772

Linux Linux, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, linux kernel

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()...

CVSS
7.8
EPSS
0.22%
13.0% percentile
CISA KEV
Not listed
Published
2025.02.27
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.22%
Technical severityCVSS 7.8

Vulnerability overview

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()...

Affected product and versions

Product
Linux Linux, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, linux kernel
Affected versions
>= 02e2a5bfebe99edcf9d694575a75032d53fe1b73 < a3e77da9f843e4ab93917d30c314f0283e28c124, >= 02e2a5bfebe99edcf9d694575a75032d53fe1b73 < 213ba5bd81b7e97ac6e6190b8f3bc6ba76123625, >= 02e2a5bfebe99edcf9d694575a75032d53fe1b73 < 40a35d14f3c0dc72b689061ec72fc9b193f37d1f, >= 02e2a5bfebe99edcf9d694575a75032d53fe1b73 < 27a39d006f85e869be68c1d5d2ce05e5d6445bf5, >= 02e2a5bfebe99edcf9d694575a75032d53fe1b73 < 92527100be38ede924768f4277450dfe8a40e16b, >= 02e2a5bfebe99edcf9d694575a75032d53fe1b73 < 6578717ebca91678131d2b1f4ba4258e60536e9f, >= 02e2a5bfebe99edcf9d694575a75032d53fe1b73 < 7fa9706722882f634090bfc9af642bf9ed719e27, >= 02e2a5bfebe99edcf9d694575a75032d53fe1b73 < 80e648042e512d5a767da251d44132553fe04ae0, >= 81a319c5c29913a23947f3d28513974682f3af03, >= 34a906cd9f6445d9510841667eff0d980279ebf3, >= 2a27f61bd411e564eb4651c18d225f6e9e1de534, >= 69aad7e01c8e883e9d2f8dc5523bd419bd02d2aa, >= 7f4f03c4a1e9a4b9679feafe7625a780864a4e76, >= 3.2.75 < 3.3, >= 3.4.113 < 3.5, >= 3.10.99 < 3.11, >= 3.12.56 < 3.13, >= 3.14.63 < 3.15, >= 4.4, < 5.4.291
Fixed versions
5.4.291, 5.10.235, 5.15.179, 6.1.129, 6.6.79, 6.12.16, 6.13.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-787