CVE-2024-41034

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux2ba466d74ed74f073257f86e61519cb8f8f46184 < ff9767ba2cb949701e45e6e4287f8af82986b703affected
LinuxLinux2ba466d74ed74f073257f86e61519cb8f8f46184 < 24c1c8566a9b6be51f5347be2ea76e25fc82b11eaffected
LinuxLinux2ba466d74ed74f073257f86e61519cb8f8f46184 < a9a466a69b85059b341239766a10efdd3ee68a4baffected
LinuxLinux2ba466d74ed74f073257f86e61519cb8f8f46184 < 7000b438dda9d0f41a956fc9bffed92d2eb6be0daffected
LinuxLinux2ba466d74ed74f073257f86e61519cb8f8f46184 < 1a8879c0771a68d70ee2e5e66eea34207e8c6231affected
LinuxLinux2ba466d74ed74f073257f86e61519cb8f8f46184 < 60f61514374e4a0c3b65b08c6024dd7e26150bfdaffected
LinuxLinux2ba466d74ed74f073257f86e61519cb8f8f46184 < 298cd810d7fb687c90a14d8f9fd1b8719a7cb8a5affected
LinuxLinux2ba466d74ed74f073257f86e61519cb8f8f46184 < a9e1ddc09ca55746079cc479aa3eb6411f0d99d4affected
LinuxLinux2.6.30affected
LinuxLinux0 < 2.6.30unaffected
LinuxLinux4.19.318 <= 4.19.*unaffected
LinuxLinux5.4.280 <= 5.4.*unaffected
LinuxLinux5.10.222 <= 5.10.*unaffected
LinuxLinux5.15.163 <= 5.15.*unaffected
LinuxLinux6.1.100 <= 6.1.*unaffected
LinuxLinux6.6.41 <= 6.6.*unaffected
LinuxLinux6.9.10 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References