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mdbx: fix SIGSEGV/invalid-deref/invalid-free inside env_close() when mdbx_env_open() failed in re-open case (backport).

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Thanks to [@leisim](https://t.me/leisim) for [reporting](https://t.me/libmdbx/3946) this issue.
This commit is contained in:
Леонид Юрьев (Leonid Yuriev)
2022-11-23 00:57:02 +03:00
parent 30f292d496
commit 6139443ef1
2 changed files with 6 additions and 1 deletions
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3
src/core.c
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@@ -13447,9 +13447,10 @@ __cold static int mdbx_env_close0(MDBX_env *env) {
}
if (env->me_dbxs) {
for (unsigned i = env->me_numdbs; --i >= CORE_DBS;)
for (unsigned i = CORE_DBS; i < env->me_numdbs; ++i)
mdbx_free(env->me_dbxs[i].md_name.iov_base);
mdbx_free(env->me_dbxs);
env->me_numdbs = CORE_DBS;
env->me_dbxs = nullptr;
}
if (env->me_pbuf) {