fix(cineon): validate bit depth against libcineon's supported set - #5283
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CineonInput::open() accepted any per-channel bit depth in [1,32], but
libcineon's ComponentDataSize()/ComponentByteCount() only recognize
{8,10,12,16,32,64} and assert(0) on anything else. A crafted file with
an unsupported bit depth (e.g. 26) passed the OIIO-side check and then
aborted deep inside the vendored library instead of failing cleanly.
Tighten the check to libcineon's actual whitelist so bogus bit depths
are rejected with a proper errorfmt() before ever reaching the vendored
code. Adds a regression fixture (broken_bitdepth2.cin) to the cineon
testsuite.
Assisted-by: Claude Code / Sonnet 5
Signed-off-by: Larry Gritz <lg@larrygritz.com>
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…ademySoftwareFoundation#5283) CineonInput::open() accepted any per-channel bit depth in [1,32], but libcineon's ComponentDataSize()/ComponentByteCount() only recognize {8,10,12,16,32,64} and assert(0) on anything else. A crafted file with an unsupported bit depth (e.g. 26) passed the OIIO-side check and then aborted deep inside the vendored library instead of failing cleanly. Tighten the check to libcineon's actual whitelist so bogus bit depths are rejected with a proper errorfmt() before ever reaching the vendored code. Adds a regression fixture (broken_bitdepth2.cin) to the cineon testsuite. Assisted-by: Claude Code / Sonnet 5 Signed-off-by: Larry Gritz <lg@larrygritz.com>
lgritz
added a commit
to lgritz/OpenImageIO
that referenced
this pull request
Jul 15, 2026
…ademySoftwareFoundation#5283) CineonInput::open() accepted any per-channel bit depth in [1,32], but libcineon's ComponentDataSize()/ComponentByteCount() only recognize {8,10,12,16,32,64} and assert(0) on anything else. A crafted file with an unsupported bit depth (e.g. 26) passed the OIIO-side check and then aborted deep inside the vendored library instead of failing cleanly. Tighten the check to libcineon's actual whitelist so bogus bit depths are rejected with a proper errorfmt() before ever reaching the vendored code. Adds a regression fixture (broken_bitdepth2.cin) to the cineon testsuite. Assisted-by: Claude Code / Sonnet 5 Signed-off-by: Larry Gritz <lg@larrygritz.com>
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CVE-2026-63638 |
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CineonInput::open() accepted any per-channel bit depth in [1,32], but libcineon's ComponentDataSize()/ComponentByteCount() only recognize {8,10,12,16,32,64} and assert(0) on anything else. A crafted file with an unsupported bit depth (e.g. 26) passed the OIIO-side check and then aborted deep inside the vendored library instead of failing cleanly.
Tighten the check to libcineon's actual whitelist so bogus bit depths are rejected with a proper errorfmt() before ever reaching the vendored code. Adds a regression fixture (broken_bitdepth2.cin) to the cineon testsuite.
Assisted-by: Claude Code / Sonnet 5