Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 5559eb5809353a83a40a1e4e7f066431c7b83020; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 86f36de14dce5802856bb7a5921d74439db00b64; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 45683723f6b53e39e8a4cec0894e61fd6ec71989; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b612f924f296408d7d02fb4cd01218afd4ed7184; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 957732a09c3828267c2819d31c425aa793dd475b; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b63ddb3ba61e2d3539f87e095c881e552bc45dab; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 785b2af9654b8beac55644e36da0085c5d776361; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 63095f4f3af59322bea984a6ae44337439348fe0 |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 4.9.334 through 4.9.*; unaffected 4.14.300 through 4.14.*; unaffected 4.19.267 through 4.19.*; unaffected 5.4.225 through 5.4.*; unaffected 5.10.156 through 5.10.*; unaffected 5.15.80 through 5.15.*; unaffected 6.0.10 through 6.0.*; unaffected 6.1 through * |
CWE
No CWE identifiers supplied.
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