CVE-2021-3739
High
Description
A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Linux Kernel
PublishedMar 10, 2022
First seenMar 10, 2022
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel5.4.144, 5.10.62, 5.13.14, 5.14.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.20 ≤ v < 5.4.144, 5.5 ≤ v < 5.10.62, 5.11 ≤ v < 5.13.14, 5.14 ≤ v < 5.14.1 | 5.4.144, 5.10.62, 5.13.14, 5.14.1 |
| fedoraproject fedora | 34 | — |
| 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 h410c_firmware | No range specified | — |
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