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Colliding with the SHA prefix of Linux's initial Git commit
Or, how to break all the tools that parse the "Fixes:" tag Kees Cook There was a recent discussion about how Linux's "Fixes" tag, which ...
December 30, 2024 There was a recent discussion about how Linux's “Fixes” tag, which traditionally uses the 12 character commit SHA prefix, has an ever increasing chance of collisions. To clear up that problem, I generated a 12-character prefix collision against the start of Git history, commit 1da177e4c3f4 (“Linux-2.6.12-rc2”), which shows up in “Fixes” tags very often: Lots of thanks to the lucky-commit project, which will grind trailing commit message whitespace in an attempt to find collisions.
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