CVE-2021-33462: Use After Free

July 26, 2022 (updated July 28, 2022)

An issue was discovered in yasm version 1.3.0. There is a use-after-free in expr_traverse_nodes_post() in libyasm/expr.c.

References

gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d
github.com/yasm/yasm/issues/165
nvd.nist.gov/vuln/detail/CVE-2021-33462

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