CVE-2022-49166 [Medium] | Security Vulnerability in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: ntfs: add sanity check on allocation size ntfs_read_inode_mount invokes ntfs_malloc_nofs with zero allocation size. It triggers one BUG in the __ntfs_malloc function. Fix this by adding sanity check on ni->attr_list_size.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-04-06	0.05%	0.01%	-0.04%
2	2025-11-22	0.04%	0.05%	+0.01%
3	2025-10-22	—	0.04%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-04-06

0.05%

0.01%

-0.04%

2025-11-22

0.04%

0.05%

+0.01%

2025-10-22

—

0.04%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.5	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	3.6	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.5

3.1

MEDIUM

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

3.6

[email protected]

OS Trackers for CVE-2022-49166

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-49166 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2022-49166
`redhat`	—	—	https://access.redhat.com/security/cve/CVE-2022-49166
`suse`	medium	CVE-2022-49166 severity moderate: SUSE including 26 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 243 product×package rows across 46 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Availability Extension 12 SP5, … (46 product lines)): Known Not Affected 243.	https://www.suse.com/security/cve/CVE-2022-49166/
`ubuntu`	medium	CVE-2022-49166 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, ignored 149, released 145, not-affected 107, needed 5.	https://ubuntu.com/security/CVE-2022-49166

Affected software / configurations for CVE-2022-49166

Vendor	Product	Version	Raw CPE
linux	linux_kernel	< 4.9.311	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.10, < 4.14.276	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.15, < 4.19.238	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.189	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.110	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.33	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 5.16.19	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.17, < 5.17.2	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2022-49166

URL	Tags
https://git.kernel.org/stable/c/07793d2e55563124108762f4e5f811db92ffe02f	Patch
https://git.kernel.org/stable/c/115fae2c1566eacc5ad2055f72521354612e72c3	Patch
https://git.kernel.org/stable/c/21d490232f323ed4053eb9924615e6fea291f154	Patch
https://git.kernel.org/stable/c/24ab2d4ef52c2dbb62a60844b87fc8872383407a	Patch
https://git.kernel.org/stable/c/714fbf2647b1a33d914edd695d4da92029c7e7c0	Patch
https://git.kernel.org/stable/c/b230f2d9441a34c7f483d39ab78519bcf73cc2e0	Patch
https://git.kernel.org/stable/c/bd8d7daa0e53b184a2f3c6e0d47330780d0a0650	Patch
https://git.kernel.org/stable/c/c641087d381a08363e5f14179bc6b0a23eca7c47	Patch
https://git.kernel.org/stable/c/fe41ad8be036a3de3e4bdde709551aeb4de2fe7d	Patch

URL

CVE-2022-49166 | ntfs: add sanity check on allocation size

Exploit prediction scoring system (EPSS) score for CVE-2022-49166

Common vulnerability scoring system (CVSS) metrics for CVE-2022-49166

Weakness enumeration for CVE-2022-49166

OS Trackers for CVE-2022-49166

Affected software / configurations for CVE-2022-49166

References for CVE-2022-49166