CVE-2025-37773 | virtiofs: add filesystem context source name check

In the Linux kernel, the following vulnerability has been resolved: virtiofs: add filesystem context source name check In certain scenarios, for example, during fuzz testing, the source name may be NULL, which could lead to a kernel panic. Therefore, an extra check for the source name should be added.

Published: 2025-05-01 Last update: 2025-11-05 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-37773 is rated Low Risk (29.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.07%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-37773

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-25 0.02% 0.07% +0.05%
2 2025-11-06 0.06% 0.02% -0.04%
3 2025-11-04 — 0.06% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-37773

CVSS metrics for this CVE.

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]

Weakness enumeration for CVE-2025-37773

OS Trackers for CVE-2025-37773

vendor priority summary link
debian not yet assigned CVE-2025-37773 not yet assigned 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-2025-37773
redhat medium — https://access.redhat.com/security/cve/CVE-2025-37773
suse medium — https://www.suse.com/security/cve/CVE-2025-37773/
ubuntu medium CVE-2025-37773 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 164, released 162, not-affected 52, needed 25, needs-triage 2, pending 1. https://ubuntu.com/security/CVE-2025-37773

Affected software / configurations for CVE-2025-37773

Vendor Product Version Raw CPE
linux linux_kernel >= 5.4, < 5.4.293 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.5, < 5.10.237 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.11, < 5.15.181 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.16, < 6.1.135 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.2, < 6.6.88 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.7, < 6.12.25 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.13, < 6.14.4 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel 6.15 cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*
linux linux_kernel 6.15 cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2025-37773

URL Tags
https://git.kernel.org/stable/c/599d1e2a6aecc44acf22fe7ea6f5e84a7e526abe Patch
https://git.kernel.org/stable/c/5ee09cdaf3414f6c92960714af46d3d90eede2f3 Patch
https://git.kernel.org/stable/c/9d6dcf18a1b49990295ac8a05fd9bdfd27ccbf88 Patch
https://git.kernel.org/stable/c/a648d80f8d9b208beee03a2d9aa690cfacf1d41e Patch
https://git.kernel.org/stable/c/a94fd938df2b1628da66b498aa0eeb89593bc7a2 Patch
https://git.kernel.org/stable/c/b84f13fdad10a543e2e65bab7e81b3f0bceabd67 Patch
https://git.kernel.org/stable/c/c3e31d613951c299487844c4d1686a933e8ee291 Patch
https://git.kernel.org/stable/c/f6ec52710dc5e156b774cbef5d0f5c99b1c53a80 Patch
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html Mailing List
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html Mailing List
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