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kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory leading to local privilege escalation to root. In particular there is a corner case where the off reg causes a masking direction change which then results in an incorrect final aux->alu_limit.
| Reporter | Title | Published | Views | Family All 262 |
|---|---|---|---|---|
 | Amazon Linux 2 : kernel (ALAS-2021-1675) | 1 Jul 202100:00 | – | nessus |
| Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2022-002 (ALASKERNEL-5.10-2022-002) | 2 May 202200:00 | – | nessus |
| Amazon Linux AMI : kernel (ALAS-2021-1516) | 13 Jul 202100:00 | – | nessus |
| Amazon Linux AMI : kernel (ALAS-2024-1952) | 14 Dec 202400:00 | – | nessus |
| AlmaLinux 8 : kernel (ALSA-2021:4356) | 9 Feb 202200:00 | – | nessus |
| CentOS 8 : kernel-rt (CESA-2021:4140) | 11 Nov 202100:00 | – | nessus |
| CentOS 8 : kernel (CESA-2021:4356) | 11 Nov 202100:00 | – | nessus |
| EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-2075) | 2 Jul 202100:00 | – | nessus |
| EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-2183) | 13 Jul 202100:00 | – | nessus |
| EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-2272) | 9 Aug 202100:00 | – | nessus |
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16 Dec 2021 08:00Current
6.4Medium risk
Vulners AI Score6.4
CVSS 27.2
CVSS 3.17.8
EPSS0.00047