Fix GH-17047: UAF on iconv filter failure #17058
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The first while loop sets the bucket variable, and this is freed in out_failure. However, when the second "goto out_failure" is triggered then bucket still refers to the bucket from the first while loop, causing a UAF. Fix this by separating the error paths.
devnexen
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Dec 5, 2024
cmb69
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Dec 5, 2024
charmitro
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Mar 13, 2025
The first while loop sets the bucket variable, and this is freed in out_failure. However, when the second "goto out_failure" is triggered then bucket still refers to the bucket from the first while loop, causing a UAF. Fix this by separating the error paths. Closes phpGH-17058.
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The first while loop sets the bucket variable, and this is freed in out_failure. However, when the second "goto out_failure" is triggered then bucket still refers to the bucket from the first while loop, causing a UAF.
Fix this by separating the error paths.