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PUBLISHED

CVE-2024-26697

nilfs2: fix data corruption in dsync block recovery for small block sizes

Reserved:2024-02-19
Published:2024-04-03
Updated:2024-04-03

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix data corruption in dsync block recovery for small block sizes The helper function nilfs_recovery_copy_block() of nilfs_recovery_dsync_blocks(), which recovers data from logs created by data sync writes during a mount after an unclean shutdown, incorrectly calculates the on-page offset when copying repair data to the file's page cache. In environments where the block size is smaller than the page size, this flaw can cause data corruption and leak uninitialized memory bytes during the recovery process. Fix these issues by correcting this byte offset calculation on the page.

Product status

Default status
unaffected

1da177e4c3f4 before 5278c3eb6bf5
affected

1da177e4c3f4 before a6efe6dbaaf5
affected

1da177e4c3f4 before 364a66be2abd
affected

1da177e4c3f4 before 120f7fa2008e
affected

1da177e4c3f4 before 9c9c68d64fd3
affected

1da177e4c3f4 before 2e1480538ef6
affected

1da177e4c3f4 before 2000016bab49
affected

1da177e4c3f4 before 67b8bcbaed47
affected

Default status
affected

4.19.307
unaffected

5.4.269
unaffected

5.10.210
unaffected

5.15.149
unaffected

6.1.79
unaffected

6.6.18
unaffected

6.7.6
unaffected

6.8
unaffected

References

https://git.kernel.org/stable/c/5278c3eb6bf5896417572b52adb6be9d26e92f65

https://git.kernel.org/stable/c/a6efe6dbaaf504f5b3f8a5c3f711fe54e7dda0ba

https://git.kernel.org/stable/c/364a66be2abdcd4fd426ffa44d9b8f40aafb3caa

https://git.kernel.org/stable/c/120f7fa2008e3bd8b7680b4ab5df942decf60fd5

https://git.kernel.org/stable/c/9c9c68d64fd3284f7097ed6ae057c8441f39fcd3

https://git.kernel.org/stable/c/2e1480538ef60bfee5473dfe02b1ecbaf1a4aa0d

https://git.kernel.org/stable/c/2000016bab499074e6248ea85aeea7dd762355d9

https://git.kernel.org/stable/c/67b8bcbaed4777871bb0dcc888fb02a614a98ab1

cve.org CVE-2024-26697

nvd.nist.gov CVE-2024-26697

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