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CVE-2025-37742

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: jfs: Fix uninit-value access of imap allocated in the diMount() function syzbot reports that hex_dump_to_buffer is using uninit…

Published May 1, 2025CWE-908EPSS 0.19%

Overview

CVE-2025-37742 is a medium-severity vulnerability. It was published on May 1, 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 uninit-value access of imap allocated in the diMount() function

syzbot reports that hex_dump_to_buffer is using uninit-value:

=====================================================

BUG: KMSAN: uninit-value in hex_dump_to_buffer+0x888/0x1100 lib/hexdump.c:171

hex_dump_to_buffer+0x888/0x1100 lib/hexdump.c:171

print_hex_dump+0x13d/0x3e0 lib/hexdump.c:276

diFree+0x5ba/0x4350 fs/jfs/jfs_imap.c:876

jfs_evict_inode+0x510/0x550 fs/jfs/inode.c:156

evict+0x723/0xd10 fs/inode.c:796

iput_final fs/inode.c:1946 [inline]

iput+0x97b/0xdb0 fs/inode.c:1972

txUpdateMap+0xf3e/0x1150 fs/jfs/jfs_txnmgr.c:2367

txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]

jfs_lazycommit+0x627/0x11d0 fs/jfs/jfs_txnmgr.c:2733

kthread+0x6b9/0xef0 kernel/kthread.c:464

ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:148

ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was created at:

slab_post_alloc_hook mm/slub.c:4121 [inline]

slab

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/067347e00a3a7d04afed93f080c6c131e5dd15eeRefgit.kernel.org/stable/c/4f10732712fce33e53703ffe5ed9155f23814097Refgit.kernel.org/stable/c/63148ce4904faa668daffdd1d3c1199ae315ef2cRefgit.kernel.org/stable/c/7057f3aab47629d38e54eae83505813cf0da1e4bRefgit.kernel.org/stable/c/9629d7d66c621671d9a47afe27ca9336bfc8a9eaRefgit.kernel.org/stable/c/cab1852368dd74d629ee02abdbc559218ca64ddeRefgit.kernel.org/stable/c/d0d7eca253ccd0619b3d2b683ffe32218ebca9acReflists.debian.org/debian-lts-announce/2025/05/msg00045.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-37742?

CVE-2025-37742 is a medium-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-37742?

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-2025-37742?

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-2025-37742?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-37742 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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