CVE-2024-40971: f2fs: remove clear SB_INLINECRYPT flag in default_options
In the Linux kernel, the following vulnerability has been resolved:
f2fs: remove clear SBINLINECRYPT flag in defaultoptions
In f2fsremount, SBINLINECRYPT flag will be clear and re-set. If create new file or open file during this gap, these files will not use inlinecrypt. Worse case, it may lead to data corruption if wrappedkeyv0 is enable.
Thread A: Thread B:
-f2fsremount -f2fsfileopen or f2fsnewinode -defaultoptions <- clear SBINLINECRYPT flag
-fscryptselectencryptionimpl
-parseoptions <- set SBINLINECRYPT again
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.99-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.9.7-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-40971?
CVE-2024-40971 is classified as a moderate severity vulnerability.
How do I fix CVE-2024-40971?
To fix CVE-2024-40971, upgrade the Linux kernel to one of the following versions: 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.13-1.
Which Linux kernel versions are affected by CVE-2024-40971?
CVE-2024-40971 affects multiple versions of the Linux kernel before the patches are applied.
What are the implications of CVE-2024-40971?
The implications of CVE-2024-40971 include potential file operations failing to use inline encryption during specific remount operations.
Is CVE-2024-40971 specific to certain Linux distributions?
CVE-2024-40971 is specifically addressed in Debian's Linux packages, including linux and linux-6.1.