CVE-2024-40971high

f2fs: remove clear SB_INLINECRYPT flag in default_options

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.3epss 0.3%

exploitation probability

0.3%top 77% of all CVEs

observed exploitation

nono source reports it

In the Linux kernel, the following vulnerability has been resolved: f2fs: remove clear SB_INLINECRYPT flag in default_options In f2fs_remount, SB_INLINECRYPT 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 wrappedkey_v0 is enable. Thread A: Thread B: -f2fs_remount -f2fs_file_open or f2fs_new_inode -default_options <- clear SB_INLINECRYPT flag -fscrypt_select_encryption_impl -parse_options <- set SB_INLINECRYPT again

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Affected products

Linux · Linux

References

https://cert-portal.siemens.com/productcert/html/ssa-265688.html https://cert-portal.siemens.com/productcert/html/ssa-355557.html https://git.kernel.org/stable/c/38a82c8d00638bb642bef787eb1d5e0e4d3b7d71 https://git.kernel.org/stable/c/724429db09e21ee153fef35e34342279d33df6ae https://git.kernel.org/stable/c/a9cea0489c562c97cd56bb345e78939f9909e7f4 https://git.kernel.org/stable/c/ac5eecf481c29942eb9a862e758c0c8b68090c33 https://git.kernel.org/stable/c/ae39c8ec4250d2a35ddaab1c40faacfec306ff66 https://git.kernel.org/stable/c/eddeb8d941d5be11a9da5637dbe81ac37e8449a2 https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html