How severe is CVE-2021-38203?

CVE-2021-38203 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-38203 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38203?

CVE-2021-38203 primarily affects Netapp Hci Management Node. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-38203?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-38203 published?

CVE-2021-38203 was published on 2021-08-08 and last updated on 2026-06-17.

CVE-2021-38203

CVE-2021-38203 is a medium-severity vulnerability in Netapp Hci Management Node with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-667.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-667
Affected product: Netapp Hci Management Node
Published: 2021-08-08
Last modified: 2026-06-17

Description

btrfs in the Linux kernel before 5.13.4 allows attackers to cause a denial of service (deadlock) via processes that trigger allocation of new system chunks during times when there is a shortage of free space in the system space_info.

Frequently asked questions

What is CVE-2021-38203?: btrfs in the Linux kernel before 5.13.4 allows attackers to cause a denial of service (deadlock) via processes that trigger allocation of new system chunks during times when there is a shortage of free space in the system space_info.
How severe is CVE-2021-38203?: CVE-2021-38203 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-38203 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38203?: CVE-2021-38203 primarily affects Netapp Hci Management Node. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-38203?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-38203 published?: CVE-2021-38203 was published on 2021-08-08 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*

More vulnerabilities in Netapp Hci Management Node

CVE-2023-32254 — Critical (CVSS 9.8): A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within…
CVE-2022-32207 — Critical (CVSS 9.8): When curl < 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation atomic by finalizing the…
CVE-2021-42377 — Critical (CVSS 9.8): An attacker-controlled pointer free in Busybox's hush applet leads to denial of service and possible code execution…
CVE-2021-3711 — Critical (CVSS 9.8): In order to decrypt SM2 encrypted data an application is expected to call the API function EVP_PKEY_decrypt().…
CVE-2020-8584 — Critical (CVSS 9.8): Element OS versions prior to 1.8P1 and 12.2 are susceptible to a vulnerability that could allow an unauthenticated…
CVE-2019-17006 — Critical (CVSS 9.8): In Network Security Services (NSS) before 3.46, several cryptographic primitives had missing length checks. In cases…

All CVEs affecting Netapp Hci Management Node →

Other CWE-667 (Improper Locking) vulnerabilities

CVE-2020-12658 — Critical (CVSS 9.8): gssproxy (aka gss-proxy) before 0.8.3 does not unlock cond_mutex before pthread exit in gp_worker_main() in…
CVE-2019-5886 — Critical (CVSS 9.8): An issue was discovered in ShopXO 1.2.0. In the application\install\controller\Index.php file, there is no validation…
CVE-2026-43215 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: cifs: Fix locking usage for tcon fields We used…
CVE-2026-31629 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: add missing return after LLCP_CLOSED…
CVE-2020-15674 — High (CVSS 8.8): Mozilla developers reported memory safety bugs present in Firefox 80. Some of these bugs showed evidence of memory…
CVE-2021-1622 — High (CVSS 8.6): A vulnerability in the Common Open Policy Service (COPS) of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband…

Browse all CWE-667 (Improper Locking) vulnerabilities →