CVE-2024-36896 | USB: core: Fix access violation during port device removal

In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix access violation during port device removal Testing with KASAN and syzkaller revealed a bug in port.c:disable_store(): usb_hub_to_struct_hub() can return NULL if the hub that the port belongs to is concurrently removed, but the function does not check for this possibility before dereferencing the returned value. It turns out that the first dereference is unnecessary, since hub->intfdev is the parent of the port device, so it can be changed easily. Adding a check for hub == NULL prevents further problems. The same bug exists in the disable_show() routine, and it can be fixed the same way.

Published: 2024-05-30 Last update: 2025-04-01 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-2024-36896 is rated Moderate Risk (43.4/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.07%). Review affected assets and schedule remediation.

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-2024-36896

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 2025-11-21 0.89% 0.07% -0.82%
2 2025-11-18 0.07% 0.89% +0.82%
3 2025-07-08 — 0.07% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-36896

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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:N)
No account or special rights needed—anonymous or random user is enough.
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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-36896

OS Trackers for CVE-2024-36896

vendor priority summary link
debian unimportant CVE-2024-36896 unimportant 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-2024-36896
redhat low — https://access.redhat.com/security/cve/CVE-2024-36896
suse medium — https://www.suse.com/security/cve/CVE-2024-36896/
ubuntu medium CVE-2024-36896 medium priority: Ubuntu including 128 source packages (linux, linux-allwinner-5.19, …), 1139 status rows across 9 suites (bionic, focal, jammy, mantic, noble, oracular, trusty, upstream, xenial): DNE 808, ignored 144, released 95, not-affected 92. https://ubuntu.com/security/CVE-2024-36896

Affected software / configurations for CVE-2024-36896

Vendor Product Version Raw CPE
linux linux_kernel >= 6.0, < 6.1.91 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.2, < 6.6.31 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.7, < 6.8.10 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel 6.9 cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*
linux linux_kernel 6.9 cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*
linux linux_kernel 6.9 cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*
linux linux_kernel 6.9 cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*
linux linux_kernel 6.9 cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*
linux linux_kernel 6.9 cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:*

References for CVE-2024-36896

cvelogic Threat Intelligence