CVE-2021-33200

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.

Link	Resource
https://www.openwall.com/lists/oss-security/2021/05/27/1	Mailing List Patch
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JJCABL43FT3FKRX5DBPZG25FNKR6CEK4/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LR3OKKPHIBGOMHN476CMLW2T7UG53QX/	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210706-0004/	Third Party Advisory

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* cpe:2.3:a:netapp:solidfire_&_hci_management_node:-:*:*:*:*:*:*:* cpe:2.3:a:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*

---

Published : 2021-05-27 01:15

Updated : 2023-02-24 06:41

---

NVD link : CVE-2021-33200

Mitre link : CVE-2021-33200

Netapp

Solidfire Baseboard Management Controller

CWE-787