CVE-2022-49832 [Medium] | Security Vulnerability in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map Here is the BUG report by KASAN about null pointer dereference: BUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50 Read of size 1 at addr 0000000000000000 by task python3/2640 Call Trace: strcmp __of_find_property of_find_property pinctrl_dt_to_map kasprintf() would return NULL pointer when kmalloc() fail to allocate. So directly return ENOMEM, if kasprintf() return NULL pointer.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-02-25	0.03%	0.07%	+0.03%
2	2025-11-11	0.11%	0.03%	-0.08%
3	2025-09-27	—	0.11%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-02-25

0.03%

0.07%

+0.03%

2025-11-11

0.11%

0.03%

-0.08%

2025-09-27

—

0.11%

—

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-2022-49832

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-49832 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-2022-49832
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2022-49832
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2022-49832/
`ubuntu`	low	CVE-2022-49832 low 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, released 154, ignored 152, not-affected 98, needed 1, needs-triage 1.	https://ubuntu.com/security/CVE-2022-49832

Affected software / configurations for CVE-2022-49832

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 3.5, < 4.9.334	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.10, < 4.14.300	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.15, < 4.19.267	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.225	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.156	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.80	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 6.0.10	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	6.1	cpe:2.3:o:linux:linux_kernel:6.1:rc1::::::
linux	linux_kernel	6.1	cpe:2.3:o:linux:linux_kernel:6.1:rc2::::::
linux	linux_kernel	6.1	cpe:2.3:o:linux:linux_kernel:6.1:rc3::::::
linux	linux_kernel	6.1	cpe:2.3:o:linux:linux_kernel:6.1:rc4::::::
linux	linux_kernel	6.1	cpe:2.3:o:linux:linux_kernel:6.1:rc5::::::

References for CVE-2022-49832

URL	Tags
https://git.kernel.org/stable/c/040f726fecd88121f3b95e70369785ad452dddf9	Patch
https://git.kernel.org/stable/c/5834a3a98cd266ad35a229923c0adbd0addc8d68	Patch
https://git.kernel.org/stable/c/777430aa4ddccaa5accec6db90ffc1d47f00d471	Patch
https://git.kernel.org/stable/c/91d5c5060ee24fe8da88cd585bb43b843d2f0dce	Patch
https://git.kernel.org/stable/c/97e5b508e96176f1a73888ed89df396d7041bfcb	Patch
https://git.kernel.org/stable/c/a988dcd3dd9e691c5ccc3324b209688f3b5453e9	Patch
https://git.kernel.org/stable/c/aaf552c5d53abe4659176e099575fe870d2e4768	Patch
https://git.kernel.org/stable/c/b4d9f55cd38435358bc16d580612bc0d798d7b4c	Patch

URL

CVE-2022-49832 | pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map

Exploit prediction scoring system (EPSS) score for CVE-2022-49832

Common vulnerability scoring system (CVSS) metrics for CVE-2022-49832

Weakness enumeration for CVE-2022-49832

OS Trackers for CVE-2022-49832

Affected software / configurations for CVE-2022-49832

References for CVE-2022-49832