Linux Kernel up to 5.10.36/5.11.20/5.12.3/5.13-rc3 eBPF RINGBUF bpf_ringbuf_reserve out-of-bounds write

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 5.10.36/5.11.20/5.12.3/5.13-rc3. The affected element is the function bpf_ringbuf_reserve of the component eBPF RINGBUF Handler. The manipulation leads to out-of-bounds write. This vulnerability is listed as CVE-2021-3489. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 5.10.36/5.11.20/5.12.3/5.13-rc3 (Operating System). This issue affects the function bpf_ringbuf_reserve of the component eBPF RINGBUF Handler. The manipulation 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 presented 06/04/2021. It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2021-3489. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 5.10.37, 5.11.21, 5.12.4 or 5.13-rc4 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.0
• 5.10.1
• 5.10.2
• 5.10.3
• 5.10.4
• 5.10.5
• 5.10.6
• 5.10.7
• 5.10.8
• 5.10.9
• 5.10.10
• 5.10.11
• 5.10.12
• 5.10.13
• 5.10.14
• 5.10.15
• 5.10.16
• 5.10.17
• 5.10.18
• 5.10.19
• 5.10.20
• 5.10.21
• 5.10.22
• 5.10.23
• 5.10.24
• 5.10.25
• 5.10.26
• 5.10.27
• 5.10.28
• 5.10.29
• 5.10.30
• 5.10.31
• 5.10.32
• 5.10.33
• 5.10.34
• 5.10.35
• 5.10.36
• 5.11.0
• 5.11.1
• 5.11.2
• 5.11.3
• 5.11.4
• 5.11.5
• 5.11.6
• 5.11.7
• 5.11.8
• 5.11.9
• 5.11.10
• 5.11.11
• 5.11.12
• 5.11.13
• 5.11.14
• 5.11.15
• 5.11.16
• 5.11.17
• 5.11.18
• 5.11.19
• 5.11.20
• 5.12.0
• 5.12.1
• 5.12.2
• 5.12.3
• 5.13-rc1
• 5.13-rc2
• 5.13-rc3

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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