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[GH-ISSUE #1619] [Bug] MIPS ELF whose section header table lies past EOF is refused although PT_MIPS_ABIFLAGS is present #545
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opened 2026-10-15 18:26:02 +00:00 by bsakaguchi
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Originally created by @bqw371 on GitHub (Oct 10, 2026).
Original GitHub issue: https://github.com/morluto/rea/issues/1619
Before submitting
Area
Native analysis or decompilation
Observed behavior
open_binary(providerghidra) refuses an otherwise admissible MIPS32r2 o32ET_EXECELF when its section header table lies past the end of the file, even though the file carries its ABI flags record in aPT_MIPS_ABIFLAGSprogram header:(
code: target_unavailable,reason: "MIPS section header table lies outside the file", raised fromsrc/application/MipsElfAbiFlags.ts.)Ghidra 12.1.3 imports the same file. It warns
24 of 24 section headers are truncated/missing from file, selectsMIPS:LE:32:defaultand finds the functions.Firmware work produces such files. An ELF carved out of a flash or memory dump keeps its original
e_shoff, but the section table was never captured. The loadable segments and every program header are intact.Reproduction
Built from the repository's own conformance sources at
d1e6fe2e(Homebrew clang 23.1.0, LLD), with the same arguments astests/conformance/ghidra/mips-fixture.mjs:Then
open_binarywithpath=<absolute r2_carved.elf>andprovider_id: "ghidra"is refused as above.r2.elfopens normally (3 procedures).Expected behavior
A section header table that lies wholly or partly past EOF should be treated as unavailable, not as a fatal error, as Ghidra does. ABI resolution then uses the
PT_MIPS_ABIFLAGSrecord. If the program headers carry no record either, the record stays "unknown", and the existing lane rule refuses with its usual ABI reason. In both cases the unreadable section table can be stated in the target's limitations. Evidence then says the file was opened without its section table, instead of the target being refused before provider selection.Impact and scope
It affects MIPS ELFs whose section table was not captured (carved firmware). It does not affect complete files. There is no evidence-integrity risk: the change only distinguishes "section table unseen" from "file malformed".
REA version
source revision
d1e6fe2e(rea --version: 6.3.0)Runtime and platform
Node 26.8.1, macOS 27 arm64, Ghidra 12.1.3 (Homebrew), OpenJDK 21
Target and artifact context
Synthetic: the repository's own
tests/conformance/c/mips.cfixture, truncated before its section header table@siudamarcelina48-beep commented on GitHub (Oct 10, 2026):
Kiedy naprawdę kochasz, nie chcesz tylko pięknych chwil... chcesz podzielić się wszystkim z tą osobą.
Są ludzie, z którymi nie chcesz spędzać tylko dobrych dni. Chcesz podzielić się ich uściskami, pocałunkami, radościami i nawet trudnymi chwilami. ❤️
Bo kochać to znaczy również pozostać, współpracować i wybierać drugą osobę raz za razem, nawet kiedy życie nie idzie zgodnie z oczekiwaniem.
Chcę mieć wszystko z tobą: twoją towarzystwo, twoje uściski, twoje pocałunki i każdą chwilę, którą życie daje nam. Chcę być u twojego boku w dobrych i złych czasach i kochać cię przez całe życie. 🥰❤️
@siudamarcelina48-beep commented on GitHub (Oct 10, 2026):
, która zajmuje bardzo specjalne miejsce w moim sercu. 🌙❤️
Może nie zawsze znajduję dokładne słowa, aby powiedzieć, jak bardzo znacisz dla mnie, ale chcę, abyś dziś spał z pewnością: jestem wdzięczny za każdą chwilę, każdy uśmiech i każdą chwilę, którą życie pozwala mi podzielić z tobą.
Niech spoczywasz w pokoju, niech twoje zmartwienia pozostaną na zewnątrz, a niech twoje sny zabiorą cię do pięknego miejsca. A jeśli mógłbym złożyć życzenie przed snem, to byłoby, by jutro się obudzić i nadal cieszyć z biegu obok ciebie. ❤️✨
#MiMundoEresTú. #Buenasnochesamor #love
@N0zoM1z0 commented on GitHub (Oct 10, 2026):
Taking the unassigned #1619 investigation after the client verification follow-up. I will reproduce the carved ELF boundary, preserve the distinction between unavailable section metadata and malformed program/ABI records, and run real Ghidra CLI/MCP checks on Linux where available. This does not expand the unspecified-ABI lane requested in #1620.