Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors The error handling in nilfs_empty_dir() when a directory folio/page read fails is incorrect, as in the old ext2 implementation, and if the folio/page cannot be read or nilfs_check_folio() fails, it will falsely determine the directory as empty and corrupt the file system. In addition, since nilfs_empty_dir() does not immediately return on a failed folio/page read, but continues to loop, this can cause a long loop with I/O if i_size of the directory's inode is also corrupted, causing the log writer thread to wait and hang, as reported by syzbot. Fix these issues by making nilfs_empty_dir() immediately return a false value (0) if it fails to get a directory folio/page.
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 < 2ac8a2fe22bdde9eecce2a42cf5cab79333fb428affected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 405b71f1251e5ae865f53bd27c45114e6c83bee3affected2ba466d74ed74f073257f86e61519cb8f8f46184 to < c77ad608df6c091fe64ecb91f41ef7cb465587f1affected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 11a2edb70356a2202dcb7c9c189c8356ab4752cdaffected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 129dcd3e7d036218db3f59c82d82004b9539ed82affected2ba466d74ed74f073257f86e61519cb8f8f46184 to < d18b05eda7fa77f02114f15b02c009f28ee42346affected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 59f14875a96ef93f05b82ad3c980605f2cb444b5affected2ba466d74ed74f073257f86e61519cb8f8f46184 to < 7373a51e7998b508af7136530f3a997b286ce81caffected
Linux Linux
Default version status: affected
2.6.30affected0 to < 2.6.30unaffected4.19.317 to ≤ 4.19.*unaffected5.4.279 to ≤ 5.4.*unaffected5.10.221 to ≤ 5.10.*unaffected5.15.162 to ≤ 5.15.*unaffected6.1.95 to ≤ 6.1.*unaffected6.6.35 to ≤ 6.6.*unaffected6.9.5 to ≤ 6.9.*unaffected6.10 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/2ac8a2fe22bdde9eecce2a42cf5cab79333fb428 ↗
- https://git.kernel.org/stable/c/405b71f1251e5ae865f53bd27c45114e6c83bee3 ↗
- https://git.kernel.org/stable/c/c77ad608df6c091fe64ecb91f41ef7cb465587f1 ↗
- https://git.kernel.org/stable/c/11a2edb70356a2202dcb7c9c189c8356ab4752cd ↗
- https://git.kernel.org/stable/c/129dcd3e7d036218db3f59c82d82004b9539ed82 ↗
- https://git.kernel.org/stable/c/d18b05eda7fa77f02114f15b02c009f28ee42346 ↗
- https://git.kernel.org/stable/c/59f14875a96ef93f05b82ad3c980605f2cb444b5 ↗
- https://git.kernel.org/stable/c/7373a51e7998b508af7136530f3a997b286ce81c ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html ↗