CVE-2025-38575 [Medium] | Security Vulnerability in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: ksmbd: use aead_request_free to match aead_request_alloc Use aead_request_free() instead of kfree() to properly free memory allocated by aead_request_alloc(). This ensures sensitive crypto data is zeroed before being freed.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-27	0.11%	0.02%	-0.09%
2	2026-02-14	0.33%	0.11%	-0.21%
3	2026-02-12	—	0.33%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-05-27

0.11%

0.02%

-0.09%

2026-02-14

0.33%

0.11%

-0.21%

2026-02-12

—

0.33%

—

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-2025-38575

vendor	priority	summary	link
`debian`	unimportant	CVE-2025-38575 unimportant priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6.	https://security-tracker.debian.org/tracker/CVE-2025-38575
`redhat`	—	—	https://access.redhat.com/security/cve/CVE-2025-38575
`suse`	medium	CVE-2025-38575 severity moderate: SUSE including 26 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 246 product×package rows across 45 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS, … (45 product lines)): Known Not Affected 246.	https://www.suse.com/security/cve/CVE-2025-38575/
`ubuntu`	medium	CVE-2025-38575 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1550 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1144, released 178, ignored 149, not-affected 76, needs-triage 2, needed 1.	https://ubuntu.com/security/CVE-2025-38575

Affected software / configurations for CVE-2025-38575

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 5.15, < 5.15.180	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 6.1.134	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.2, < 6.6.87	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.7, < 6.12.23	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.13, < 6.13.11	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.14, < 6.14.2	cpe:2.3:o:linux:linux_kernel::::::::
debian	debian_linux	11.0	cpe:2.3:o:debian:debian_linux:11.0:::::::*

References for CVE-2025-38575

URL	Tags
https://git.kernel.org/stable/c/1de7fec4d3012672e31eeb6679ea60f7ca010ef9	Patch
https://git.kernel.org/stable/c/3e341dbd5f5a6e5a558e67da80731dc38a7f758c	Patch
https://git.kernel.org/stable/c/46caeae23035192b9cc41872c827f30d0233f16e	Patch
https://git.kernel.org/stable/c/571b342d4688801fc1f6a1934389dac09425dc93	Patch
https://git.kernel.org/stable/c/6171063e9d046ffa46f51579b2ca4a43caef581a	Patch
https://git.kernel.org/stable/c/a6b594868268c3a7bfaeced912525cd2c445529a	Patch
https://git.kernel.org/stable/c/aef10ccd74512c52e30c5ee19d0031850973e78d	Patch
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html	Third Party Advisory Mailing List

URL

CVE-2025-38575 | ksmbd: use aead_request_free to match aead_request_alloc

Exploit prediction scoring system (EPSS) score for CVE-2025-38575

Common vulnerability scoring system (CVSS) metrics for CVE-2025-38575

Weakness enumeration for CVE-2025-38575

OS Trackers for CVE-2025-38575

Affected software / configurations for CVE-2025-38575

References for CVE-2025-38575