CVE-2024-41034

nilfs2: fix kernel bug on rename operation of broken directory

MEDIUM

5.5

CVSS Score

Published: July 29, 2024 at 02:31 PM UTC

Updated: August 5, 2026 at 12:04 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix kernel bug on rename operation of broken directory Syzbot reported that in rename directory operation on broken directory on nilfs2, __block_write_begin_int() called to prepare block write may fail BUG_ON check for access exceeding the folio/page size. This is because nilfs_dotdot(), which gets parent directory reference entry ("..") of the directory to be moved or renamed, does not check consistency enough, and may return location exceeding folio/page size for broken directories. Fix this issue by checking required directory entries ("." and "..") in the first chunk of the directory in nilfs_dotdot().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.30 ≤ v < 4.19.3182.6.30 ≤ v < 5.10.2222.6.30 ≤ v < 5.15.1632.6.30 ≤ v < 5.4.2802.6.30 ≤ v < 6.1.1002.6.30 ≤ v < 6.102.6.30 ≤ v < 6.6.412.6.30 ≤ v < 6.9.104.20 ≤ v < 5.4.2805.11 ≤ v < 5.15.1635.16 ≤ v < 6.1.1005.5 ≤ v < 5.10.2226.2 ≤ v < 6.6.416.7 ≤ v < 6.9.102ba466d74ed74f073257f86e61519cb8f8f461846.10 rc1 6.10 rc2 6.10 rc3 6.10 rc4 6.10 rc5 6.10 rc6 6.10 rc7

Vendor states this is fixed in 1a8879c0771a68d70ee2e5e66eea34207e8c6231 (fixed)

Vendor states this is fixed in 24c1c8566a9b6be51f5347be2ea76e25fc82b11e (fixed)

Vendor states this is fixed in 298cd810d7fb687c90a14d8f9fd1b8719a7cb8a5 (fixed)

Vendor states this is fixed in 60f61514374e4a0c3b65b08c6024dd7e26150bfd (fixed)

Vendor states this is fixed in 7000b438dda9d0f41a956fc9bffed92d2eb6be0d (fixed)

Vendor states this is fixed in a9a466a69b85059b341239766a10efdd3ee68a4b (fixed)

Vendor states this is fixed in a9e1ddc09ca55746079cc479aa3eb6411f0d99d4 (fixed)

Vendor states this is fixed in ff9767ba2cb949701e45e6e4287f8af82986b703 (fixed)

Vendor states this is fixed in 2.6.30 (unaffected)

Vendor states this is fixed in 4.19.318 (unaffected)

Vendor states this is fixed in 5.10.222 (unaffected)

Vendor states this is fixed in 5.15.163 (unaffected)