Linux Kernel up to 5.15.2 Device hw_atl_utils.c hw_atl_utils_fw_rpc_wait length out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.15.2 and classified as critical. Affected by this vulnerability is the function hw_atl_utils_fw_rpc_wait of the file drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c of the component Device Handler. The manipulation of the argument length leads to out-of-bounds write. This vulnerability is documented as CVE-2021-43975. The attack can be initiated remotely. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.2 (Operating System) and classified as critical. This issue affects the function hw_atl_utils_fw_rpc_wait of the file drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c of the component Device Handler. The manipulation of the argument length with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was released 11/17/2021. It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2021-43975 since 11/17/2021. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/17/2025).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2024-1086). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • SUSE Linux
  • IBM QRadar SIEM

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

11/17/2021 🔍
11/17/2021 +0 days 🔍
11/17/2021 +0 days 🔍
10/17/2025 +1430 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43975 (🔍)
GCVE (CVE): GCVE-0-2021-43975
GCVE (VulDB): GCVE-100-186791
CERT Bund: WID-SEC-2024-1086 - IBM QRadar SIEM: Mehrere Schwachstellen

Entryinfo

Created: 11/17/2021 21:33
Updated: 10/17/2025 05:05
Changes: 11/17/2021 21:33 (45), 11/20/2021 00:44 (1), 10/17/2025 05:05 (21)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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