SB2024060128 - NULL pointer dereference in Linux kernel btrfs
Published: June 1, 2024
Security Bulletin ID
SB2024060128
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2021-3739)
The vulnerability allows a local user to read data or crash the application.
The vulnerability exists due to NULL pointer dereference within the btrfs_rm_device() function in fs/btrfs/volumes.c. A local user can read data or crash the application.
Remediation
Install update from vendor's website.
References
- https://ubuntu.com/security/CVE-2021-3739
- https://www.openwall.com/lists/oss-security/2021/08/25/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1997958
- https://github.com/torvalds/linux/commit/e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091
- https://security.netapp.com/advisory/ntap-20220407-0006/