CVE-2024-41086: bcachefs: Fix sb_field_downgrade validation
In the Linux kernel, the following vulnerability has been resolved:
bcachefs: Fix sbfielddowngrade validation
- bch2sbdowngradevalidate() wasn't checking for a downgrade entry extending past the end of the superblock section
- foreachdowngradeentry() is used in totext() and needs to work on malformed input; it also was missing a check for a field extending past the end of the section
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-41086?
CVE-2024-41086 has been assigned a medium severity rating due to potential impacts on system integrity.
How do I fix CVE-2024-41086?
To fix CVE-2024-41086, upgrade to the patched versions of the Linux kernel mentioned in the release notes.
Which Linux kernel versions are affected by CVE-2024-41086?
CVE-2024-41086 affects certain versions of the Linux kernel prior to the fixed releases.
Is CVE-2024-41086 exploitable in production environments?
Yes, CVE-2024-41086 could potentially be exploited in production environments if not patched.
What impact does CVE-2024-41086 have on bcachefs?
CVE-2024-41086 impacts bcachefs by allowing improper handling of downgrade validations, which could affect data integrity.