A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The rsearch calculation for the post size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ghostscript | Artifex | 9.50 (including) | 9.50 (including) |
| Ghostscript | Artifex | 9.52 (including) | 9.52 (including) |
| Ghostscript | Ubuntu | devel | * |
| Ghostscript | Ubuntu | focal | * |
| Ghostscript | Ubuntu | trusty | * |