CVE-2021-34866
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.14-rc3.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.97%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.14-rc3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs, which can result in a type confusion condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-14689.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.97% probability · 60th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-843
- Affected
- linux/linux kernel · netapp/h410c firmware · netapp/h300s firmware · netapp/h500s firmware · netapp/h700s firmware · netapp/h300e firmware · netapp/h500e firmware · netapp/h700e firmware · netapp/h410s firmware
- Source
- zdi-disclosures@trendmicro.com
References
- https://security.netapp.com/advisory/ntap-20220217-0008/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1148/Third Party Advisory, VDB Entry
- https://security.netapp.com/advisory/ntap-20220217-0008/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1148/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.