From: Richard Purdie <richard.pur...@linuxfoundation.org> CVE is effectively disputed - yes there is stack exhaustion but no bug and it is building the parser, not running it, effectively similar to a compiler ICE. Upstream no plans to address and there is no security issue.
https://github.com/westes/flex/issues/414 Signed-off-by: Richard Purdie <richard.pur...@linuxfoundation.org> (cherry picked from commit 0cae5d7a24bedf6784781b62cbb3795a44bab4d1) Signed-off-by: Steve Sakoman <st...@sakoman.com> --- meta/conf/distro/include/cve-extra-exclusions.inc | 4 ---- meta/recipes-devtools/flex/flex_2.6.4.bb | 5 +++++ 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/meta/conf/distro/include/cve-extra-exclusions.inc b/meta/conf/distro/include/cve-extra-exclusions.inc index cf07acce1d..a6f52b5de7 100644 --- a/meta/conf/distro/include/cve-extra-exclusions.inc +++ b/meta/conf/distro/include/cve-extra-exclusions.inc @@ -61,10 +61,6 @@ CVE_CHECK_WHITELIST += "CVE-2020-29509 CVE-2020-29511" # There was a proposed patch https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg06098.html # however qemu maintainers are sure the patch is incorrect and should not be applied. -# flex:flex-native https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-6293 -# Upstream bug, still open: https://github.com/westes/flex/issues/414 -# Causes memory exhaustion so potential DoS but no buffer overflow, low priority - # wget https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-31879 # https://mail.gnu.org/archive/html/bug-wget/2021-02/msg00002.html # No response upstream as of 2021/5/12 diff --git a/meta/recipes-devtools/flex/flex_2.6.4.bb b/meta/recipes-devtools/flex/flex_2.6.4.bb index 1d43d2228a..50d3bf8de1 100644 --- a/meta/recipes-devtools/flex/flex_2.6.4.bb +++ b/meta/recipes-devtools/flex/flex_2.6.4.bb @@ -26,6 +26,11 @@ SRC_URI[sha256sum] = "e87aae032bf07c26f85ac0ed3250998c37621d95f8bd748b31f15b33c4 UPSTREAM_CHECK_URI = "https://github.com/westes/flex/releases"; UPSTREAM_CHECK_REGEX = "flex-(?P<pver>\d+(\.\d+)+)\.tar" +# Disputed - yes there is stack exhaustion but no bug and it is building the +# parser, not running it, effectively similar to a compiler ICE. Upstream no plans to address +# https://github.com/westes/flex/issues/414 +CVE_CHECK_WHITELIST += "CVE-2019-6293" + inherit autotools gettext texinfo ptest M4 = "${bindir}/m4" -- 2.25.1
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