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CVE-2022-49560

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: exfat: check if cluster num is valid Syzbot reported slab-out-of-bounds read in exfat_clear_bitmap.

Published Feb 26, 2025CWE-125EPSS 0.29%

Overview

CVE-2022-49560 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

exfat: check if cluster num is valid

Syzbot reported slab-out-of-bounds read in exfat_clear_bitmap.

This was triggered by reproducer calling truncute with size 0,

which causes the following trace:

BUG: KASAN: slab-out-of-bounds in exfat_clear_bitmap+0x147/0x490 fs/exfat/balloc.c:174

Read of size 8 at addr ffff888115aa9508 by task syz-executor251/365

Call Trace:

__dump_stack lib/dump_stack.c:77 [inline]

dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118

print_address_description+0x81/0x3c0 mm/kasan/report.c:233

__kasan_report mm/kasan/report.c:419 [inline]

kasan_report+0x1a4/0x1f0 mm/kasan/report.c:436

__asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309

exfat_clear_bitmap+0x147/0x490 fs/exfat/balloc.c:174

exfat_free_cluster+0x25a/0x4a0 fs/exfat/fatent.c:181

__exfat_truncate+0x99e/0xe00 fs/exfat/file.c:217

exfat_truncate+0x11b/0x4f0 fs/exfat/file.c:243

exfat_setattr+0xa03/0xd40 fs/exfat/file.c

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/2193286402df2d9c53294f7a858d5e6fd7346e08Refgit.kernel.org/stable/c/64ba4b15e5c045f8b746c6da5fc9be9a6b00b61dRefgit.kernel.org/stable/c/7c58b14b6f9cde9f69e7fa053ab73f6e013a7131Refgit.kernel.org/stable/c/82f723b8a5adf497f9e34c702a30ca7298615654Refgit.kernel.org/stable/c/c504167adc3248095a905fa0700a9693897cb5ed

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49560?

CVE-2022-49560 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-49560?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-49560?

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-2022-49560?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49560 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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