01 Record

CVE-2025-38257

s390/pkey: Prevent overflow in size calculation for memdup_user()

HighPUBLISHEDCNA: Linux

CNA base score7.3 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

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02 Description

s390/pkey: Prevent overflow in size calculation for memdup_user()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 7.4% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-15.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-07-09 10:42Z1 YR AGO

Last updated

2026-10-15 21:52Z14 DAYS AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.3)

CNA CVSS vector

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

Weaknesses

CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

81bcfcd3768fc8c972b9b696768fa2efdbe0e3955558a59b3038eadfa9b164e9

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxf2bbc96e7cfad3891b7bf9bd3e566b9b7ab4553d to < ad1bdd24a02d5a8d119af8e4cd50933780a6d29f, f2bbc96e7cfad3891b7bf9bd3e566b9b7ab4553d to < faa1ab4a23c42e34dc000ef4977b751d94d5148c, f2bbc96e7cfad3891b7bf9bd3e566b9b7ab4553d to < 88f3869649edbc4a13f6c2877091f81cd5a50f05, f2bbc96e7cfad3891b7bf9bd3e566b9b7ab4553d to < f855b119e62b004a5044ed565f2a2b368c4d3f16, f2bbc96e7cfad3891b7bf9bd3e566b9b7ab4553d to < 73483ca7e07a5e39bdf612eec9d3d293e8bef649, f2bbc96e7cfad3891b7bf9bd3e566b9b7ab4553d to < 7360ee47599af91a1d5f4e74d635d9408a54e489, 5.4—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/ad1bdd24a02d5a8d119af8e4cd50933780a6d29f
git.kernel.orghttps://git.kernel.org/stable/c/faa1ab4a23c42e34dc000ef4977b751d94d5148c
git.kernel.orghttps://git.kernel.org/stable/c/88f3869649edbc4a13f6c2877091f81cd5a50f05
git.kernel.orghttps://git.kernel.org/stable/c/f855b119e62b004a5044ed565f2a2b368c4d3f16
git.kernel.orghttps://git.kernel.org/stable/c/73483ca7e07a5e39bdf612eec9d3d293e8bef649
git.kernel.orghttps://git.kernel.org/stable/c/7360ee47599af91a1d5f4e74d635d9408a54e489
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.147-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.37-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.12.37-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.