Repository navigation
Conversation
A crafted LST entry can wrap its address and size calculation. This allocates a small ROM buffer before the payload is read beyond it. Calculate each range end with 64-bit arithmetic and reject entries that cannot fit in the 32-bit Naomi address space.
Press5elect
pushed a commit
to Press5elect/PSFlycast
that referenced
this pull request
Oct 7, 2026
…ast's open pull requests, release candidates in the updater, no Screenshot control - Netplay: the checksum of a save state or of a CDI, GDI or CUE image is the file's, not its pointer's (flyinghead#2513). - sh4: the FPSCR cause field is cleared when the guest writes FPSCR (flyinghead#2531). - CHD: the track metadata's text fields are held to their buffers (flyinghead#2384). - Input: absolute mouse motion rebased after relative input (flyinghead#2528); axis detection for triggers that report as buttons (flyinghead#2213). - Checks of an ISO9660 directory record, RZIP chunk sizes, DNS answers, GGPO input packets and card events, and a Naomi LST's ranges (flyinghead#2414, flyinghead#2415, flyinghead#2416, flyinghead#2519, flyinghead#2520, flyinghead#2521). - The updater ranks v1.1.0-rc1 under v1.1.0, and a release's build is not offered candidates. - The quick menu's Screenshot row and control are gone: the console's Create button takes screenshots. - Built with PS5_Vulkan 5b5e4fc, the payload SDK fork at b5efad5 and libsmb2 7e4ff97. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
A crafted Naomi LST entry can wrap the calculation used to determine the ROM allocation size:
The loader later uses the original address and size when reading the corresponding payload:
For example, address
0x100and size0xffffffffproduce a 255-byte allocation, but the payload read begins one byte past that allocation. Opening such a game set can overwrite Flycast heap memory and crash or corrupt the process.Calculate each range end using 64-bit arithmetic and reject entries that cannot fit within the 32-bit Naomi address space before allocating or reading ROM data.