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CVE-2025-38203

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: jfs: Fix null-ptr-deref in jfs_ioc_trim [ Syzkaller Report ] Oops: general protection fault, probably for non-canonical addres…

Published Jul 4, 2025CWE-476EPSS 0.19%

Overview

CVE-2025-38203 is a medium-severity vulnerability. It was published on July 4, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

jfs: Fix null-ptr-deref in jfs_ioc_trim

[ Syzkaller Report ]

Oops: general protection fault, probably for non-canonical address

0xdffffc0000000087: 0000 [#1

KASAN: null-ptr-deref in range [0x0000000000000438-0x000000000000043f]

CPU: 2 UID: 0 PID: 10614 Comm: syz-executor.0 Not tainted

6.13.0-rc6-gfbfd64d25c7a-dirty #1

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014

Sched_ext: serialise (enabled+all), task: runnable_at=-30ms

RIP: 0010:jfs_ioc_trim+0x34b/0x8f0

Code: e7 e8 59 a4 87 fe 4d 8b 24 24 4d 8d bc 24 38 04 00 00 48 8d 93

90 82 fe ff 4c 89 ff 31 f6

RSP: 0018:ffffc900055f7cd0 EFLAGS: 00010206

RAX: 0000000000000087 RBX: 00005866a9e67ff8 RCX: 000000000000000a

RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001

RBP: dffffc0000000000 R08: ffff88807c180003 R09: 1ffff1100f830000

R10: dffffc0000000000 R11: ffffed100f830001 R12: 0000000000000000

R13: 0000000000000000 R14: 000

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0d50231d473f89024158dc62624930de45d13718Refgit.kernel.org/stable/c/4a8cb9908b51500a76f5156423bd295df53bff89Refgit.kernel.org/stable/c/9806ae34d7d661c372247cd36f83bfa0523d60edRefgit.kernel.org/stable/c/a4685408ff6c3e2af366ad9a7274f45ff3f394eeRefgit.kernel.org/stable/c/a9d41c925069c950e18160e12a7e10e0f58c56fbReflists.debian.org/debian-lts-announce/2025/10/msg00007.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38203?

CVE-2025-38203 is a medium-severity vulnerability. It was published on July 4, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-38203?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-38203?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-38203?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38203 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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