iobuffer: fix overflow OOB read/write bugs #59728
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maxsize is usually typemax, so need to be careful to not do comparisons after adding to it. Substracting from it should normally be perfectly fine. At worst we should compute a negative amount of space remaining.
vtjnash
added
embarrassing-bugfix
KristofferC
pushed a commit
that referenced
this pull request
Oct 4, 2025
maxsize is usually typemax, so need to be careful to not do comparisons after adding to it. Substracting from it should normally be perfectly fine. At worst we should compute a negative amount of space remaining. (cherry picked from commit 85687b5)
KristofferC
pushed a commit
that referenced
this pull request
Oct 12, 2025
maxsize is usually typemax, so need to be careful to not do comparisons after adding to it. Substracting from it should normally be perfectly fine. At worst we should compute a negative amount of space remaining. (cherry picked from commit 85687b5)
KristofferC
removed
the
backport 1.12
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maxsize is usually typemax, so need to be careful to not do comparisons after adding to it. Substracting from it should normally be perfectly fine. At worst we should compute a negative amount of space remaining.