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Bug 821517 (CVE-2021-27836)

Summary: dev-libs/libxls: null pointer dereferences
Product: Gentoo Security Reporter: John Helmert III <ajak>
Component: VulnerabilitiesAssignee: Gentoo Security <security>
Status: CONFIRMED ---    
Severity: minor CC: maintainer-needed
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
URL: https://github.com/libxls/libxls/issues/94
Whiteboard: B3 [upstream]
Package list:
Runtime testing required: ---

Description John Helmert III gentoo-dev Security 2021-11-03 19:17:14 UTC
CVE-2021-27836:

An issue was discoverered in in function xls_getWorkSheet in xls.c in libxls 1.6.2, allows attackers to cause a denial of service, via a crafted XLS file.

Three PRs listed in the issue:

https://github.com/libxls/libxls/pull/95
https://github.com/libxls/libxls/pull/96
https://github.com/libxls/libxls/pull/97

Only the first two are merged, but they're merged into dev and are
unreleased.