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CVE-2024-40971

f2fs: remove clear SB_INLINECRYPT flag in default_options

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.221, 5.15.162, 6.1.96, 6.6.36, 6.9.7
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 · fixed in 38a82c8d00638bb642bef787eb1d5e0e4d3b7d71; From 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 · fixed in 724429db09e21ee153fef35e34342279d33df6ae; From 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 · fixed in a9cea0489c562c97cd56bb345e78939f9909e7f4; From 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 · fixed in eddeb8d941d5be11a9da5637dbe81ac37e8449a2; From 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 · fixed in ae39c8ec4250d2a35ddaab1c40faacfec306ff66; From 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 · fixed in ac5eecf481c29942eb9a862e758c0c8b68090c33

  • Linux Linux

    3.8

  • KernelLinux

    From 3.8.0 · fixed in 5.10.221; From 5.11.0 · fixed in 5.15.162; From 5.16.0 · fixed in 6.1.96; From 6.2.0 · fixed in 6.6.36; From 6.7.0 · fixed in 6.9.7

References 6

git.kernel.org