CVE-2020-8835
High
Description
In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780)
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedApr 2, 2020
First seenApr 2, 2020
How to fix
Update
- linux linux_kernel5.4.29, 5.5.14, 5.6.1 or later
Vendor advisories
- usn.ubuntu.com/4313-1/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7OONYGMSYBEFHLHZJK3GOI5Z553G4LD/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YXBWSHZ6DJIZVXKXGZPK6QPFCY7VKZEG/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TF4PQZBEPNXDSK5DOBMW54OCLP25FTCD/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.4.7 ≤ v < 5.4.29, 5.5.0 ≤ v < 5.5.14, 5.6 ≤ v < 5.6.1 | 5.4.29, 5.5.14, 5.6.1 |
| fedoraproject fedora | 30, 31, 32 | — |
| canonical ubuntu_linux | 18.04, 19.10 | — |
| netapp cloud_backup | No range specified | — |
| netapp hci_management_node | No range specified | — |
| netapp solidfire | No range specified | — |
| netapp steelstore_cloud_integrated_storage | No range specified | — |
| netapp a700s_firmware | No range specified | — |
| netapp 8300_firmware | No range specified | — |
| netapp 8700_firmware | No range specified | — |
| netapp a400_firmware | No range specified | — |
| netapp a320_firmware | No range specified | — |
| netapp c190_firmware | No range specified | — |
| netapp a220_firmware | No range specified | — |
| netapp fas2720_firmware | No range specified | — |
| netapp fas2750_firmware | No range specified | — |
| netapp a800_firmware | No range specified | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h300e_firmware | No range specified | — |
| netapp h500e_firmware | No range specified | — |
| netapp h700e_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| netapp h610c_firmware | No range specified | — |
| netapp h610s_firmware | No range specified | — |
| netapp h615c_firmware | No range specified | — |
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