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Huawei EulerOS: CVE-2020-24240: bison security update

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Huawei EulerOS: CVE-2020-24240: bison security update

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
08/25/2020
Created
11/03/2022
Added
11/03/2022
Modified
11/03/2022

Description

GNU Bison before 3.7.1 has a use-after-free in _obstack_free in lib/obstack.c (called from gram_lex) when a '\0' byte is encountered. NOTE: there is a risk only if Bison is used with untrusted input, and the observed bug happens to cause unsafe behavior with a specific compiler/architecture. The bug report was intended to show that a crash may occur in Bison itself, not that a crash may occur in code that is generated by Bison.

Solution(s)

  • huawei-euleros-2_0_sp10-upgrade-bison
  • huawei-euleros-2_0_sp10-upgrade-bison-help

References

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