Is CVE-2022-49363 in the CISA KEV catalog?

No. CVE-2022-49363 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-49363?

CVE-2022-49363 has a CVSS v3 base score of 5.5 (MEDIUM).

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

CVE-2022-49363 has an EPSS score of 0.25% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-49363?

Upgrade linux on debian 11 to 5.10.127-1 or later.

CVE & CISA-KEV Catalog

CVE-2022-49363

MEDIUM

5.5

CVSS v3

NVD

Description

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.

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.127-1CVE-2022-49363

Fixed in:5.18.5-1CVE-2022-49363

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.25%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Patch6

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-21.