What is CVE-2022-49363?

CVE-2022-49363 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.8 onward and patched in 5.4.198, 5.10.121, 5.15.46 and others. CVE-2022-49363 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49363?

CVE-2022-49363 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-49363?

Yes, CVE-2022-49363 has been patched. Fixed versions include 5.4.198, 5.10.121, 5.15.46 and others. If you are running Linux kernel 3.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49363 actively exploited?

CVE-2022-49363 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49363

Medium

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on block address in f2fs_do_zero_range() As Yanming reported in bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215894 I have encountered a bug in F2FS file system in kernel v5.17. I have uploaded the system call sequence as case.c, and a fuzzed image can be found in google net disk The kernel should enable CONFIG_KASAN=y and CONFIG_KASAN_INLINE=y. You can reproduce the bug by running the following commands: kernel BUG at fs/f2fs/segment.c:2291! Call Trace: f2fs_invalidate_blocks+0x193/0x2d0 f2fs_fallocate+0x2593/0x4a70 vfs_fallocate+0x2a5/0xac0 ksys_fallocate+0x35/0x70 __x64_sys_fallocate+0x8e/0xf0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae The root cause is, after image was fuzzed, block mapping info in inode will be inconsistent with SIT table, so in f2fs_fallocate(), it will cause panic when updating SIT with invalid blkaddr. Let's fix the issue by adding sanity check on block address before updating SIT table with it.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-10-21

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 3.8 and later are affected. Fixed in 5.4.198, 5.10.121, 5.15.46, 5.17.14, 5.18.3, 5.19 and their respective stable series.

Affected from

≥ 3.8

Fixed in

✓ 5.4.198 5.4.x ✓ 5.10.121 5.10.x ✓ 5.15.46 5.15.x ✓ 5.17.14 5.17.x ✓ 5.18.3 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49363 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/25f8236213a91efdf708b9d77e9e51b6fc3e141c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/470493be19a5730ed432e3ac0f29a2ee7fc6c557
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7361c9f2bd6a8f0cbb41cdea9aff04765ff23f67
Patch

6 patch commits total View all on NVD

Details

CVE ID CVE-2022-49363

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-10-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49363?

CVE-2022-49363 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.8 onward and has been patched in 5.4.198, 5.10.121, 5.15.46 and others. CVE-2022-49363 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49363?

CVE-2022-49363 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-49363?

Yes — CVE-2022-49363 has been patched. Fixed versions include 5.4.198, 5.10.121, 5.15.46 and others. If you are running Linux kernel 3.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49363 actively exploited?

No — CVE-2022-49363 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.