Fix buffer overflow vulnerability in deflatePrime function (CVE-2018-25032)#396
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yannaingtun wants to merge 1 commit into
Open
Fix buffer overflow vulnerability in deflatePrime function (CVE-2018-25032)#396yannaingtun wants to merge 1 commit into
yannaingtun wants to merge 1 commit into
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Description
This PR addresses a buffer overflow vulnerability in the deflatePrime function within zlib code. The vulnerability could allow attackers to cause crashes or potentially execute arbitrary code when using Z_FIXED compression mode.
The fix changes the buffer check from using s->d_buf to s->sym_buf, which ensures the pending buffer cannot overwrite the symbol table during operation.
Reference
CVE-2018-25032
Original fix in zlib: madler/zlib@5c44459