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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
2ba466d74ed74f073257f86e61519cb8f8f46184 to < ff9767ba2cb949701e45e6e4287f8af82986b703affected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 24c1c8566a9b6be51f5347be2ea76e25fc82b11eaffected2ba466d74ed74f073257f86e61519cb8f8f46184 to < a9a466a69b85059b341239766a10efdd3ee68a4baffected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 7000b438dda9d0f41a956fc9bffed92d2eb6be0daffected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 1a8879c0771a68d70ee2e5e66eea34207e8c6231affected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 60f61514374e4a0c3b65b08c6024dd7e26150bfdaffected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 298cd810d7fb687c90a14d8f9fd1b8719a7cb8a5affected2ba466d74ed74f073257f86e61519cb8f8f46184 to < a9e1ddc09ca55746079cc479aa3eb6411f0d99d4affected
Linux Linux
Default version status: affected
2.6.30affected0 to < 2.6.30unaffected4.19.318 to ≤ 4.19.*unaffected5.4.280 to ≤ 5.4.*unaffected5.10.222 to ≤ 5.10.*unaffected5.15.163 to ≤ 5.15.*unaffected6.1.100 to ≤ 6.1.*unaffected6.6.41 to ≤ 6.6.*unaffected6.9.10 to ≤ 6.9.*unaffected6.10 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/ff9767ba2cb949701e45e6e4287f8af82986b703 ↗
- https://git.kernel.org/stable/c/24c1c8566a9b6be51f5347be2ea76e25fc82b11e ↗
- https://git.kernel.org/stable/c/a9a466a69b85059b341239766a10efdd3ee68a4b ↗
- https://git.kernel.org/stable/c/7000b438dda9d0f41a956fc9bffed92d2eb6be0d ↗
- https://git.kernel.org/stable/c/1a8879c0771a68d70ee2e5e66eea34207e8c6231 ↗
- https://git.kernel.org/stable/c/60f61514374e4a0c3b65b08c6024dd7e26150bfd ↗
- https://git.kernel.org/stable/c/298cd810d7fb687c90a14d8f9fd1b8719a7cb8a5 ↗
- https://git.kernel.org/stable/c/a9e1ddc09ca55746079cc479aa3eb6411f0d99d4 ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗