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SUSE:SLE-15-SP3:GA
glibc.22972
regex-read-overrun.patch
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File regex-read-overrun.patch of Package glibc.22972
2019-01-31 Paul Eggert <eggert@cs.ucla.edu> regex: fix read overrun [BZ #24114] Problem found by AddressSanitizer, reported by Hongxu Chen in: https://debbugs.gnu.org/34140 * posix/regexec.c (proceed_next_node): Do not read past end of input buffer. Index: glibc-2.26/posix/regexec.c =================================================================== --- glibc-2.26.orig/posix/regexec.c +++ glibc-2.26/posix/regexec.c @@ -1304,8 +1304,10 @@ proceed_next_node (const re_match_contex else if (naccepted) { char *buf = (char *) re_string_get_buffer (&mctx->input); - if (memcmp (buf + regs[subexp_idx].rm_so, buf + *pidx, - naccepted) != 0) + if (mctx->input.valid_len - *pidx < naccepted + || (memcmp (buf + regs[subexp_idx].rm_so, buf + *pidx, + naccepted) + != 0)) return -1; } }
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