Description
In the Linux kernel, the following vulnerability has been resolved: ntfs: check overflow when iterating ATTR_RECORDs Kernel iterates over ATTR_RECORDs in mft record in ntfs_attr_find(). Because the ATTR_RECORDs are next to each other, kernel can get the next ATTR_RECORD from end address of current ATTR_RECORD, through current ATTR_RECORD length field. The problem is that during iteration, when kernel calculates the end address of current ATTR_RECORD, kernel may trigger an integer overflow bug in executing `a = (ATTR_RECORD*)((u8*)a + le32_to_cpu(a->length))`. This may wrap, leading to a forever iteration on 32bit systems. This patch solves it by adding some checks on calculating end address of current ATTR_RECORD during iteration.
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
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 5559eb5809353a83a40a1e4e7f066431c7b83020affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 86f36de14dce5802856bb7a5921d74439db00b64affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 45683723f6b53e39e8a4cec0894e61fd6ec71989affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b612f924f296408d7d02fb4cd01218afd4ed7184affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 957732a09c3828267c2819d31c425aa793dd475baffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b63ddb3ba61e2d3539f87e095c881e552bc45dabaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 785b2af9654b8beac55644e36da0085c5d776361affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 63095f4f3af59322bea984a6ae44337439348fe0affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected4.9.334 to ≤ 4.9.*unaffected4.14.300 to ≤ 4.14.*unaffected4.19.267 to ≤ 4.19.*unaffected5.4.225 to ≤ 5.4.*unaffected5.10.156 to ≤ 5.10.*unaffected5.15.80 to ≤ 5.15.*unaffected6.0.10 to ≤ 6.0.*unaffected6.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/5559eb5809353a83a40a1e4e7f066431c7b83020 ↗
- https://git.kernel.org/stable/c/86f36de14dce5802856bb7a5921d74439db00b64 ↗
- https://git.kernel.org/stable/c/45683723f6b53e39e8a4cec0894e61fd6ec71989 ↗
- https://git.kernel.org/stable/c/b612f924f296408d7d02fb4cd01218afd4ed7184 ↗
- https://git.kernel.org/stable/c/957732a09c3828267c2819d31c425aa793dd475b ↗
- https://git.kernel.org/stable/c/b63ddb3ba61e2d3539f87e095c881e552bc45dab ↗
- https://git.kernel.org/stable/c/785b2af9654b8beac55644e36da0085c5d776361 ↗
- https://git.kernel.org/stable/c/63095f4f3af59322bea984a6ae44337439348fe0 ↗